WD Re EX800M, WD4000FYYZ, WD4000FDYZ, WD3000FYYZ, WD3000FDYZ Technical Reference Manual
...Page 1
WD Re™ EX800M
Datacenter Capacity HDD
Technical Reference Manual
WD4000FYYZ
WD4000FDYZ
WD3000FYYZ
WD3000FDYZ
WD2000FYYZ
WD2000FDYZ
Page 2
© 2013 Western Digital Technologies, Inc.
All Rights Reserved
Information furnished by WD is believed to be accurate and reliable. No license is granted by implication or otherwise
under any patent or patent rights of WD. WD reserves the right to change specifications at any time without notice.
Western Digital, WD, and the WD logo are registered trademarks in the U.S. and other countries; and WD Re,
IntelliSeek, NoTouch, RAFF, StableTrac, Data Lifeguard, CacheFlow, and FIT Lab are trademarks of Western Digital
Technologies, Inc. Other marks may be mentioned herein that belong to other companies.
Western Digital
3355 Michelson Drive, Suite 100
Irvine, California 92612
2679-771339-A05
Document Control Number Definition:
2679-771xxx- Axx-Px NRD
Doc Control No. Doc Revision Level Non-Released Document
Axx = Released Version
Px = Review Cycle
Page 3
WD Re EX800M
Technical Reference Manual
2679-771339-A05 RELEASED 8/12/13
Page 4
RELEASED 8/12/13 2679-771339-A05
Page 5
EX800M Table of Contents
TABLE OF CONTENTS
1. DESCRIPTION AND FEATURES ................................................................................................. 1
1.1 General Description....................................................................................................................................................................... 1
1.2 Product Features ............................................................................................................................................................................ 1
2. SPECIFICATIONS....................................................................................................................... 4
2.1 Performance Specifications ......................................................................................................................................................... 4
2.2 CacheFlow™ .................................................................................................................................................................................... 5
2.2.1 Write Cache..................................................................................................................................................................... 5
2.2.2 Read Cache ..................................................................................................................................................................... 5
2.3 Mechanical Specifications............................................................................................................................................................ 6
2.3.1 Physical Dimensions ...................................................................................................................................................... 7
2.3.2 Drive Mounting ................................................................................................................................................................ 7
2.4 Electrical Specifications................................................................................................................................................................ 8
2.4.1 5-disk Platform ................................................................................................................................................................ 8
2.4.2 3-disk Platform ................................................................................................................................................................ 9
2.4.3 Power Savings Modes................................................................................................................................................... 9
2.4.4 Input Voltage Requirements....................................................................................................................................... 10
2.4.5 Ripple...............................................................................................................................................................................11
2.4.6 Power Connectors and Cables................................................................................................................................. 11
2.4.7 Device Plug Connector Pin Definitions ...................................................................................................................12
2.5 Environmental Specifications.....................................................................................................................................................13
2.5.1 Shock and Vibration .....................................................................................................................................................13
2.5.2 Temperature and Humidity ......................................................................................................................................... 14
2.5.3 Temperature Measurement......................................................................................................................................... 14
2.5.4 Cooling............................................................................................................................................................................15
2.5.5 Atmospheric Pressure .................................................................................................................................................15
2.5.6 Acoustics ........................................................................................................................................................................15
2.5.7 RoHS (Restriction of Hazardous Substances) ......................................................................................................15
2.6 Agency Approvals.........................................................................................................................................................................16
2.7 Full Model Number Specification..............................................................................................................................................16
3. PRODUCT FEATURES.............................................................................................................. 17
3.1 SATA 6 Gb/s.................................................................................................................................................................................18
3.2 Optional Self Encrypting Drive (SED)......................................................................................................................................18
3.3 Time-Limited Error Recovery (TLER) ....................................................................................................................................... 18
3.4 Rotary Acceleration Feed Forward (RAFF)™ ......................................................................................................................... 19
3.5 Perpendicular Magnetic Recording (PMR).............................................................................................................................19
3.6 IntelliSeek .......................................................................................................................................................................................20
3.7 StableTrac (Double-tied Shaft Motor) .....................................................................................................................................20
3.8 Native Command Queuing (NCQ)...........................................................................................................................................20
3.9 Pre-emptive Wear Leveling (PWL) ..........................................................................................................................................20
3.10 MicroFemto Slider ........................................................................................................................................................................20
3.11 S.M.A.R.T. Command Transport (SCT)...................................................................................................................................21
3.11.1 Write Same ....................................................................................................................................................................21
3.11.2 Temperature Reporting................................................................................................................................................ 21
3.12 World Wide Name (WWN) .......................................................................................................................................................21
3.13 Hot Plug Support..........................................................................................................................................................................21
3.14 Active LED Status ........................................................................................................................................................................22
3.15 Fluid Dynamic Bearings (FDB)..................................................................................................................................................22
3.16 Staggered Spinup and Activity Indication (SATA Power Pin 11) .....................................................................................22
3.16.1 Staggered Spinup ........................................................................................................................................................22
3.16.2 Activity Indication ..........................................................................................................................................................22
3.17 48-bit Logical Block Addressing (LBA) ..................................................................................................................................23
3.18 Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.)..................................................................................23
3.19 Password Security Mode............................................................................................................................................................23
3.19.1 Master and User Passwords ......................................................................................................................................23
3.19.2 Security Levels ..............................................................................................................................................................23
2679-771339-A05 RELEASED 8/13/13 i
Page 6
Table of Contents EX800M
3.20 Optional Model: Self Encrypting Drive (SED)........................................................................................................................ 24
3.20.1 Security Mode FDE ......................................................................................................................................................24
3.20.2 Sanitize Device Feature Set .......................................................................................................................................24
3.21 Data Path Protection (DPP) .......................................................................................................................................................24
3.22 Manufacturing Option Block ......................................................................................................................................................24
4. RELIABILITY............................................................................................................................. 25
4.1 Reliability Specifications .............................................................................................................................................................25
4.2 Error Rates .....................................................................................................................................................................................25
4.2.1 Error Rates......................................................................................................................................................................26
4.2.2 Environmental Interference .........................................................................................................................................27
4.3 Reliability Features Set................................................................................................................................................................27
4.3.1 Data Lifeguard™ ............................................................................................................................................................27
4.3.2 Thermal Management ..................................................................................................................................................27
4.3.3 Internal Environmental Protection System ..............................................................................................................27
4.3.4 Defect Management.....................................................................................................................................................27
4.3.5 Recoverable Errors.......................................................................................................................................................28
4.3.6 Unrecoverable Errors ...................................................................................................................................................28
4.3.7 Automatic Defect Retirement.....................................................................................................................................28
4.3.8 Error Recovery Process...............................................................................................................................................28
5. ATA COMMAND SET ............................................................................................................. 29
5.1 Host Interface Commands .........................................................................................................................................................29
5.1.1 ATA-7/ATA-8 Commands ..........................................................................................................................................29
5.1.2 SATA Commands.........................................................................................................................................................30
5.1.3 Obsolete Commands...................................................................................................................................................30
5.1.4 SCT Commands ...........................................................................................................................................................31
5.2 S.M.A.R.T. (B0h)........................................................................................................................................................................... 31
5.2.1 Read Attribute Values Sub-Command ....................................................................................................................31
5.2.2 Supported Attributes ...................................................................................................................................................33
5.2.3 Read Log Sector........................................................................................................................................................... 34
5.3 Identify Device (ECh)...................................................................................................................................................................35
5.4 Set Features (EFh) ......................................................................................................................................................................42
6. DRIVE HANDLING AND MAINTENANCE.................................................................................. 43
6.1 Unpacking ...................................................................................................................................................................................... 43
6.1.1 Handling Precautions...................................................................................................................................................43
6.1.2 Inspection of Shipping Container ............................................................................................................................. 43
6.1.3 Removal From Shipping Container...........................................................................................................................43
6.1.4 Removal From Static Shielding Bag.........................................................................................................................44
6.1.5 Moving Precautions......................................................................................................................................................44
6.2 Hard Drive Installation..................................................................................................................................................................44
6.2.1 Backplane Usage .........................................................................................................................................................45
6.3 Maintenance...................................................................................................................................................................................46
7. TECHNICAL SUPPORT............................................................................................................. 47
7.1 WD Online Services ....................................................................................................................................................................47
8. GLOSSARY ..............................................................................................................................48
ii RELEASED 8/13/13 2679-771339-A05
Page 7
EX800M List of Figures
LIST OF FIGURES
Figure 2-1 Mounting Dimensions...........................................................................................................................................6
Figure 2-2 Standard Factory Connectors ......................................................................................................................... 12
Figure 2-3 Drive Base Casting Thermocouple Location ............................................................................................... 14
Figure 2-4 Forced Airflow Direction ................................................................................................................................... 15
Figure 3-1 Dual Linear Sensor Rotational Acceleration Feed Forward (RAFF) ....................................................... 19
Figure 3-2 Manufacturing Option Block............................................................................................................................ 24
Figure 6-1 SATA Cable Connections................................................................................................................................ 44
Figure 6-2 Connector Pair Blind Mate Misalignment Allowable.................................................................................. 45
Figure 6-3 Device Backplane Connection........................................................................................................................ 45
2679-771339-A05 RELEASED 8/13/13 iii
Page 8
List of Tables EX800M
LIST OF TABLES
Table 2-1 Physical Specifications.......................................................................................................................................... 4
Table 2-2 Performance Specifications .................................................................................................................................4
Table 2-3 Device Pin Connector Pin Definitions............................................................................................................. 12
Table 2-4 Shock and Vibration ............................................................................................................................................ 13
Table 2-5 Maximum and Reliability Operating Temperature Limits (Drive Baseplate) ........................................... 14
Table 2-6 Full Model Number Description........................................................................................................................ 16
Table 5-1 ATA-7/ATA-8 Command Opcodes................................................................................................................. 29
Table 5-2 Optional Subcommands ................................................................................................................................... 30
Table 5-3 Obsolete Command Opcodes ......................................................................................................................... 30
Table 5-4 SCT Action Codes .............................................................................................................................................. 31
Table 5-5 Definitions for the 512 Bytes. ........................................................................................................................... 31
Table 5-6 Supported Attributes........................................................................................................................................... 33
Table 5-7 Log Address Definition ....................................................................................................................................... 34
Table 5-8 Identify Device Command.................................................................................................................................. 35
iv RELEASED 8/13/13 2679-771339-A05
Page 9
EX800M Description and Features
1.0 DESCRIPTION AND FEATURES
1.1 General Description
WD Re datacenter hard drives offer up to 4 TB capacities and are available with SAS or SATA
interface. With the highest error tolerance and MTBF of any capacity-optimized drive, WD Re delivers
the durability and 24x7x365 reliability required in tightly packed vibration prone multi-drive systems.
The combination of high-capacity, peak performance and robust design make WD Re drives ideal for
heavy workload environments, cloud storage, RAID arrays, external storage arrays, data warehousing
and mining applications.
1.2 Product Features
Optional Self Encrypting Drive (SED) — Utilizing an AES 256 bit encryption engine for Crypto
erase capability, WD supports both industry standard commands of the Sanitize Feature Set and
also the Security Feature Set which utilizes the Secure Erase Unit (SEU) enhanced mode bit.
Serial ATA ( SATA) — Serial ATA (SATA) is the next generation bus interface for hard drives. It is
designed to replace Parallel ATA, and has many advantages including increased transfer rate,
improved signal integrity, enhanced data protection, and hot plug support.
Time-Limited Error Recovery (TLER) — TLER prevents hard drive error recovery fallout by
limiting the time the drive spends in error recovery, providing increased performance, improved
availability, and lower total cost of ownership in RAID arrays.
*
Rotary Acceleration Feed Forward (RAFF) — These drives employ RAFF technology to maintain
hard drive performance in high vibration environments through adaptive compensation of the
servo system.
Perpendicular Magnetic Recording (PMR) — With PMR technology the magnetization of each
data bit is aligned vertically to the spinning disk, rather than longitudinally as has been the case in
hard drive technology for decades. This enables more data on a given disk than is possible with
conventional longitudinal recording, and provides a platform for future expansion of hard drive
densities.
IntelliSeek™ — Key product feature that calculates optimum seek speeds to lower power
consumption, noise, and vibration.
StableTrac™ — The motor shaft is secured at both ends to reduce system-induced vibration and
stabilize platters for accurate tracking, during read and write operations.
Native Command Queuing (NCQ) — Performance of a random I/O workload can be improved
through intelligent re-ordering of the I/O requests so they read/write to and from the nearest
available sectors and minimize the need for additional disk revolutions or head actuator
movement. This improvement can be achieved though Native Command Queing (NCQ) , which
is supported by these hard drives.
Pre-emptive Wear Leveling (PWL) — This WD feature provides a solution for protecting the
recording media against mechanical wear. In cases where the drive is so busy with incoming
commands that it is forced to stay in a same cylinder position for a long time, the PWL control
engine initiates forced seeks so that disk lubricant maintains an even distribution and does not
become depleted. This feature ensures reliability for applications that perform a high incidence of
read/write operations at the same physical location on the disk.
* SED drives may require TCG-compliant host or controller support. SED drives may not be available in all countries
2679-771339-A05 RELEASED 8/13/13 1
Page 10
Description and Features EX800M
MicroFemto Slider — These drives incorporate the next generation of femto slider form factor in
which the read/write head is mounted on the small, lightweight microfemto slider that allows the
head to move more quickly from track to track on the disk.
S.M.A.R.T. Command Transport (SCT) — The SCT Command Transport feature set provides a
method for a host to send commands and data to a device and for a device to send data and status
to a host using log pages.
World Wide Name (WWN) — The World Wide Name (WWN) defined in ATA/ATAPI-7 is a
modification of the IEEE extended unique identifier 64 bit standard (EUI-64) and is comprised of
three major components: naming authority, organizationally unique identifier (OUI) and serial
number. WD's OUI is 0014EEh.
Reliability Features Set-Data Lifeguard™ — Representing WD's ongoing commitment to data
protection, Data Lifeguard includes features that enhance the drive’s ability to prevent data loss.
Data Lifeguard data protection utilities include thermal management, an environmental
protection system, and embedded error detection and repair features that automatically detect,
isolate, and repair problem areas that may develop over the extended use of the hard drive. With
these enhanced data reliability features, the drive can perform more accurate monitoring, error
repair, and deliver exceptional data security.
Hot Plug Support — SATA supports hot plugging (also known as “hot swapping”), the ability to
swap out a failed hard drive without having to power down the system or reboot. This capability
contributes to both data availability and serviceability without any associated downtime, making it
a critical feature for extending SATA into enterprise applications.
Active LED Status — The drive supports external LED requirements. It provides an activity LED
output which is ON during command execution and OFF otherwise.
Fluid Dynamic Bearings (FDB) — Bearing design that incorporates a layer of high-viscosity
lubricant instead of ball bearings in the hard drive spindle motor. As an alternative to conventional
ball bearing technology, FDB designs provide increased non-operational shock resistance, speed
control, and improved acoustics.
Staggered Spin-Up — Next generation SATA 6 Gb/s feature that allows the system to control
whether the drive will spin up immediately or wait until the interface is fully ready.
CacheFlow™ —WD’s unique, multi-generation caching algorithm evaluates the way data is read
from and written to the drive and adapts “on-the-fly” to the optimum read and write caching
methods. CacheFlow minimizes disk seek operations and overheads due to rotational latency.
CacheFlow supports sequential and random write cache. With write cache and other CacheFlow
features, the user can cache both read and write data. The cache can hold multiple writes and
collectively write them to the hard disk.
48-bit Logical Block Addressing (LBA) — WD SATA drives support both 48-bit and 28-bit LBA
and CHS-based addressing. LBA is included in advanced BIOS and operating system device
drivers and ensures high capacity disk integration.
Power Management — The drive supports the ATA and SATA power management command
set, allowing the host to reduce the power consumption of the drive by issuing a variety of power
management commands.
Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.) — S.M.A.R.T. enables a
drive’s internal status to be monitored through diagnostic commands at the host level and during
offline activities. S.M.A.R.T. devices employ data analysis algorithms that are used to predict the
likelihood of some near-term degradation or fault conditions. When used with a S.M.A.R.T.
application, the drive can alert the host system of a negative reliability status condition. The host
system can then warn the user of the impending risk of data loss and recommend an appropriate
action.
2 RELEASED 8/13/13 2679-771339-A05
Page 11
EX800M Description and Features
ATA Secur i t y — The drive supports the ATA Security Mode Feature set. The ATA Security Mode
feature set allows the user to create a device lock password that prevents unauthorized hard disk
access even if the drive is removed from the host computer. The correct password must be
supplied to the hard drive in order to access user data. Both the User and Master Password features
are supported, along with the High and Maximum security modes. The Master Password Revision
code is also supported. This feature varies by drive configuration and may not be available on all
configurations.
Data Path Protection (DPP) — A feature that prevents possible electronic failures from
corrupting data on the hard drive.
2679-771339-A05 RELEASED 8/13/13 3
Page 12
Specifications EX800M
2.0 SPECIFICATIONS
Table 2-1. Physical Specifications
Physical Specifications
1
WD4000FYYZ
WD4000FDYZ
Capacity 4 TB 3 TB 2 TB
Interface SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s
Disk count platform 5-disk 5-disk 3-disk
Number of Heads 10 8 6
Bytes per sector 512 512 512
User Sectors per Drive 7,814,037,168 5,860,533,168 3,907,029,168
Servo Type Embedded Embedded Embedded
Channel Recording Method LDPC–Low Density Parity Code
1
As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and
one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As
used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte
per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second.
Effective maximum SATA 6 Gb/s transfer rate calculated according to the Serial ATA specification published by the
SATA-IO organization as of the date of this document. Visit www.sata-io.org for details.
2
Optional SED model.
2.1 Performance Specifications
Table 2-2. Performance Specifications
Average Seek (without overhead)
- Read
- Write
Average Latency 4.2 ms (nominal)
Rotational Speed 7200 RPM (nominal)
Data Transfer Rate (maximum at OD)
- Maximum burst interface transfer rate
- Maximum sustained interface transfer rate
Buffer Size 64 MB
Error Rate - Unrecoverable <10 in 10
Spindle Start Time
- From Power-on to Drive Ready
Spindle Stop Time <15s average
Load/Unload Cycles
1
As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, and gigabit
per second (Gb/s) = one billion bits per second. Effective maximum SATA 6 Gb/s transfer rate calculated
according to the Serial ATA specification published by the SATA-IO organization as of the date of this document.
Visit www.sata-io.org for details.
2
Defined as the time from power-on to the setting of Drive Ready and Seek Complete including calibration.
3
Controlled unload at ambient condition.
3
1
2
WD3000FYYZ
2
WD3000FDYZ
7.7 ms average
8.3 ms average
6 Gb/s
WD4000FxYZ: 171 MB/s
WD3000FxYZ: 168 MB/s
WD2000FxYZ: 164 MB/s
16
bits read
15s average (FAST spinup mode)
20s average (STANDARD spinup mode)
600,000 minimum
2
WD2000FYYZ
WD2000FDYZ
2
4 RELEASED 8/13/13 2679-771339-A05
Page 13
EX800M Specifications
2.2 CacheFlow™
CacheFlow is WD’s unique, multi-generation disk caching system. It incorporates read cache with
write cache.
WD designed CacheFlow to obtain maximum performance with today’s most popular operating
systems and applications. CacheFlow increases performance over prior caching algorithms by
increasing the number of times that requested data is in the cache. This reduces the number of host
commands that require actual media access thereby improving overall drive performance.
Typical applications perform a variety of access patterns, such as random, sequential, and repetitive.
CacheFlow is designed to dynamically adapt to the changes in access patterns that occur during the
course of application execution.
Random mode is the default operational mode for CacheFlow. Once CacheFlow detects a sequential
access pattern, it leaves random mode. CacheFlow also performs predictive read operations to increase
the probability that data requested in future commands already exists in the cache.
CacheFlow partitions the buffer into multiple segments to allow for the fact that applications may
access multiple non-contiguous areas on the disk. CacheFlow tracks the amount of valid data in each
segment and controls the deallocation of segments to maximize drive performance.
2.2.1 Write Cache
CacheFlow is designed to improve both single and multi-sector write performance by reducing delays
caused by seek time and rotational latency.
The write cache adaptively detects random and sequential access patterns during application execution.
If a defective sector is found during a write cache operation, that sector is automatically relocated before
the write occurs.
2.2.2 Read Cache
CacheFlow implements a multiple segment read cache. Cache segments are assigned to read commands
as they are received from the host.
Each read segment consists of pre and post read sectors in addition to the host-requested sectors. This
maximizes the amount of cache data in the drive’s buffer, thereby increasing the likelihood of cache hits
and improving overall performance.
2679-771339-A05 RELEASED 8/13/13 5
Page 14
Specifications EX800M
2.3 Mechanical Specifications
Figure 2-1 shows the mounting dimensions and locations of the screw holes for the drive.
Figure 2-1. Mounting Dimensions
#
*)
*!
)
)
*)
#
*
#
#
*)!
*!!)
%&
!
)*)
""
*
*)#
*)
(
*)#
*!
*))#
*')
*)#
*
'#
)''#
#$!$
*)
*)!)
#
!))#
*!')
*)"))#
!!!"
!)
'!
# (
# (
!!
!
(
#$!$
)*
# !*)
!"#
6 RELEASED 8/13/13 2679-771339-A05
Page 15
EX800M Specifications
2.3.1 Physical Dimensions
English Metric
Dimension Tolerance Dimension Tolerance
Height 1.028 inches MAX 26.1 mm MAX
Length 5.787 inches MAX 147.0 mm MAX
Width 4.00 inches ±0.01 inch 101.6 mm ±0.25 mm
Weight (3-disk) 1.55 pounds ±5% 0.70 kg ±5%
Weight (5-disk) 1.66 pounds ±5% 0.75 kg ±5%
2.3.2 Drive Mounting
Use either the four bottom screws or at least four of the side mounting screws to rigidly support the
drive and prevent vibration. Some adaptor frames may not have the mechanical design structure
capable of mounting the drive to meet the specified shock and vibration requirements.
The hard drive itself does not provide electrical isolation between mounting locations and drive ground
connection. If electrical isolation is required, the system designer or integrator would be responsible for
providing a solution.
2.3.2.1 Mounting Restrictions
If your system does not support hot plugging (see “Hot Plug Support” on page 21), it must be turned
off and unplugged before installing your hard drive.
2.3.2.2 Orientation
You can mount the hard drive in the X, Y, or Z axis, depending upon the physical design of your
system. For best results, mount the drive with all four screws grounded to the chassis. If all four screws
are not used, see "Grounding" on page 7.
2.3.2.3 Screw Type and Screw Length Limitations
The hard drive should be mounted to the chassis using four 6-32 screws. Recommended screw torque
is 5 in-lb. Maximum screw torque is 10 in-lb.
CAUTION: Screws that are too long can damage the hard drive. Hard drive screw penetration
can differ between products depending upon hard drive design. WD’s minimum design criteria is
to always meet the SFF 8301 industry standard specification. The industry standard as defined in
the SFF 8301 specifies a maximum of 3 mm screw penetration, and for a minimum of 2.4 mm of
thread engagement from both the screw and the hard drive.
See Figure 2-1 for allowable fastener penetration for this product family.
2.3.2.4 Grounding
The PCBA and HDA grounds are always connected together in the drive and cannot be disconnected.
The drive mounting screws, unless intentionally isolated, will provide additional ground connections
between the HDA and the system chassis. If the drive isn't grounded via mounting screws as described
under “Hard Drive Installation” on page 44, there may be increased electrical emissions (EMI).
2679-771339-A05 RELEASED 8/13/13 7
Page 16
Specifications EX800M
2.4 Electrical Specifications
2.4.1 5-disk Platform
2.4.1.1 Mean Current Requirements and Power Dissipation
Operating Mode
Mean Current
1, 2
Mean Power
12 VDC 5 VDC
Spinup Standard
Spinup Fast 2.500A (max)
Spinup Green 1.200A (max)
Operational Peak Current 2.000A (peak)
Sequential Read 575 mA 650 mA 10.2W
Sequential Write 575 mA 550 mA 9.7W
Random Read/Write 750 mA 370 mA 10.9W
Idle 575 mA 340 mA 8.6W
1
When running at 3 Gb/s or as a single ported device, power will be lower than the value listed.
2
All peak and mean values are typical (measured at 25°C) except where specified as maximum.
3
Default spinup mode when not otherwise overridden. Use the WDSpinUp utility to modify the
spinup mode for individual drives. Go to http://support.wdc.com, then click on "Downloads" and
the drive family name to download this utility.
3
1.900A (max)
1.225A
1.600A
775 mA
2125 mA (max)
625 mA (peak)
220 mA
625 mA (peak)
220 mA
625 mA (peak)
220 mA
850 mA (peak)
950 mA (max)
1, 2
-
-
-
-
2.4.1.1.1 Power Savings Modes
Mode
Mean Current
1
2
Mean Current
2
Mean Power
DIPM Off
12 VDC 5 VDC
Idle_A 575 mA 230 mA 7.5W
Idle_B 475 mA 220 mA 6.8W
Idle_C 400 mA 220 mA 5.9W
Standby_Y 230 mA 220 mA 3.9W
Standby_Z 7 mA 210 mA 1.1W
1
When running at 3 Gb/s or as a single ported device, power will be lower than the value listed.
2
All peak and mean values are typical (measured at 25°C) except where specified as maximum.
2
8 RELEASED 8/13/13 2679-771339-A05
Page 17
EX800M Specifications
2.4.2 3-disk Platform
2.4.2.1 Mean Current Requirements and Power Dissipation
Operating Mode
Mean Current
1, 2
Mean Power
12 VDC 5 VDC
Spinup Standard
Spinup Fast 2.500A (max)
Spinup Green 1.200A (max)
Operational Peak Current 1.850A (peak)
Sequential Read 400 mA 650 mA 8.1W
Sequential Write 400 mA 575 mA 7.7W
Random Read/Write 600 mA 360 mA 9W
Idle 390 mA 350 mA 6.4W
1
When running at 3 Gb/s or as a single ported device, power will be lower than the value listed.
2
All values are typical (measured at 25°C) except where specified as maximum.
3
Default spinup mode when not otherwise overridden. Use the WDSpinUp utility to modify the
spinup mode for individual drives. Go to http://support.wdc.com, then click on "Downloads" and
the drive family name to download this utility.
3
1.900A (max)
1.225A
1.600A
775 mA
1.925 mA (max)
625 mA (peak)
220 mA
625 mA (peak)
220 mA
625 mA (peak)
220 mA
825 mA (peak)
875 mA (max)
1, 2
-
-
-
2.4.2.1.1 Power Savings Modes
Mode
Mean Current
1
2
Mean Current
2
Mean Power
2
DIPM Off
12 VDC 5 VDC
Idle_A 350 mA 230 mA 5.4W
Idle_B 320 mA 220 mA 4.9W
Idle_C 270 mA 220 mA 4.3W
Standby_Y 150 mA 220 mA 2.9W
Standby_Z 7 mA 210 mA 1.1W
1
When running at 3 Gb/s or as a single ported device, power will be lower than the value listed.
2
All values are typical (measured at 25°C) except where specified as maximum.
2.4.3 Power Savings Modes
This product is capable of supporting both legacy ATA Advanced Power Management (APM) mode
and the new more extensive Extended Power Conditions (EPC) standards. Unless otherwise specified,
the default disk drive is shipped with the legacy APM mode enabled, and the EPC modes can be
enabled via the Set Feature command (Feature ‘4A’h, Sub Command ‘04’h). These two power savings
implementations are exclusively used, and thus not simultaneously supported.
2.4.3.1 SATA Advanced Power Management
This drive supports the legacy ATA power management commands that lower the average power
consumption of the hard drives. For example, to take advantage of the lower power consumption
modes of the drive, an energy efficient host system could implement a power management scheme that
issues a Standby Immediate command when a host resident disk inactivity timer expires. The Standby
Immediate command causes the drive to spin down and enter a low-power mode. Subsequent disk
access commands would cause the drive to spin up and execute the new command. To avoid excessive
wear on the drive due to the starting and stopping of the HDA, set the host’s disk inactivity timer to no
shorter than ten minutes.
2679-771339-A05 RELEASED 8/13/13 9
Page 18
Specifications EX800M
The drive also supports the SATA power management feature that lowers the average power
consumption of the SATA interface.
2.4.3.2 SATA Extended Power Conditions (EPC)
WD drives additionally support T13 Extended Power Conditions, as stated in the ACS-2 specification.
Power savings features, normally only available in notebook drives, are now included in our Enterprise
products. With these features enabled, drive power can be reduced automatically via inactivity timer, or
manually via Host command. In timer based mode, the drive automatically starts reducing its power
based on inactivity of commands from the Host. With progression into the idle states, the drive saves
more and more power, but consequently takes longer to recover and respond to Host media
commands.
A summary of the new low power modes and what the drive does in each mode is shown below:
Idle_A
Heads Floating Over Disk
<10 ms recovery
Idle_B
Heads Parked
<650 ms recovery
Idle_C
Heads Parked, Reduced RPM
3-15 sec recovery (see the Power Conditions Log for the drives actual recovery time)
Idle_c recovery current limited to the maximum user mode power.
Standby_Y
Heads Parked, Reduced RPM
3-15 sec recovery (see the Power Conditions Log for the drives actual recovery time)
Standby_y recovery can use full spin up power.
Standby_Z
Traditional standby
Drive not spinning
Recovery is similar to a typical TTR (Time To Ready) for the HDD
WD has added the Power Condition Log, which defines the support, enable bits, and timers for all
power conditions. The power management timers start running after all Host commanded drive
activity is complete, and will run during drive background operations, but do not take effect until those
background operations are completed. The timer expiration min/max values are visible to the Host/
Initiator, but are rounded silently by the drive to its internal min/max values. The timer enable and
timer values can be marked independently as changeable. Please note that some Host Operating
Systems may be unable to take advantage of the inactivity timers, as they constantly ping the Drive
with writes to update a time stamp. In these situations it is advisable to extend the Idle_B timer value
beyond the time interval of the writes, or to disable the timer entirely. Please see your WD
representative for help with questions about these features.
2.4.4 Input Voltage Requirements
The input voltage requirements are +5.0V ± 5% and +12.0V ± 10%.
10 RELEASED 8/13/13 2679-771339-A05
Page 19
EX800M Specifications
2.4.5 Ripple
+12 VDC +5 VDC
Maximum
Frequency
200 mV (double amplitude)
0-30 MHz
100 mV (double amplitude)
0-30 MHz
2.4.6 Power Connectors and Cables
SATA Connectors
For information on SATA data connectors, refer to the Serial ATA 1.0 specification available for
download at www.serialata.org.
At the time of this printing, there are no published standards for SATA power/mating connectors or
power/data cable wire gauges.
Cabling Requirements for SATA
The SATA cable consists of four conductors in two differential pairs. The cable may also include drain
wires to be terminated to the ground pins in the SATA cable receptacle connectors. See the SATA 1.0
specification for cable specifications. The cable's maximum length is one meter.
It is recommended that customers use SATA cable receptacles with internal bumps to provide
additional retention when mating with an enterprise hot-plug optimized hard drive connector.
2679-771339-A05 RELEASED 8/13/13 11
Page 20
Specifications EX800M
2.4.7 Device Plug Connector Pin Definitions
These drives interface with the host I/O bus via the SATA interface connection illustrated in Figure 22 below. The drive receives power from the SATA power connection or legacy ATA
4-pin power connector J3 in Figure 2-2. Table 2-3 identifies the pin definitions of the SATA
connectors and the corresponding signal names and signal functions.
Figure 2-2. Standard Factory Connectors
Table 2-3. Device Pin Connector Pin Definitions
S1 Gnd 2nd mate
S2 A+ Differential signal pair A from Phy
S3 A-
S4 Gnd 2nd mate
S5 B- Differential signal pair B from Phy
Signal segment
Power segment
S6 B+
S7 Gnd 2nd mate
Key and spacing separate signal and power segments
P1
P2
P3
P4 Gnd 1st mate, GROUND
P5 Gnd 2nd mate, GROUND
P6 Gnd 2nd mate, GROUND
P7
P8
P9
P10 Gnd 2nd mate, GROUND
P11 ACT- Activity LED- (O.C.)/Staggered Spin-up Disable Control
P12 Gnd 1st mate, GROUND
P13
P14
P15
V
33
V
33
V
33
V
5
V
5
V
5
V
12
V
12
V
12
3.3 V power, NC
3.3 V power, NC
3.3 V power, pre-charge, 2nd mate, NC
5V power, Precharge, 2nd mate
5V power
2nd mate, 5V power
12 V power, pre-charge, 2nd mate
12 V power
12 V power
12 RELEASED 8/13/13 2679-771339-A05
Page 21
EX800M Specifications
2.5 Environmental Specifications
2.5.1 Shock and Vibration
Table 2-4. Shock and Vibration
Shock
Operating 30G, 2 ms (read/write)
65G, 2 ms (read)
Non-operating (2 ms) 300G
Note: Half-sine wave, measured without shock isolation and without non-recoverable errors.
Rotational Shock Non-Operating
Amplitude 20K rad/sec
Duration 2 ms
Vibration
Operating Swept Sine: 20-300 Hz, 0.75G (0 to peak)
Random: 0.004 g
Non-operating Swept Sine: 20-500 Hz, 4.0G (0 to peak)
Random: 0.05 g
Rotational Vibration
2
12.5 rad/sec
Frequency (Hz) 20 200 300 900 1400 2000
based on the following PSD profile maintaining <20% performance degradation:
(Rad/sec
2
Sweep Rate: 0.25 octave/minute minimum
2
/Hz (10-300 Hz)
Sweep Rate: 0.5 octave/minute minimum
2
/Hz (10-300 Hz)
2)2
/Hz
0.035 0.035 0.2 0.2 0.002 0.002
Operating Vibration
Drives are tested by applying a random excitation in each linear axis, one axis at a time. The drive
incurs no physical damage and no hard errors while subjected to continuous vibration not exceeding
the level listed in Table 2-4. Operating performance may degrade during periods of exposure to
continuous vibration.
Non-Operating Vibration
Note: This specification applies to handling and transportation of unmounted drives.
Drives are tested by applying a random excitation in each linear axis, one axis at a time. The drive
incurs no physical damage when subjected to continuous vibration not exceeding the level listed in
Table 2-4.
Packaged Shock and Vibration
The shipping packaging is designed to meet the National/International Safe Transit Association (N/
ISTA) standards for packaged products. The drive incurs no physical damage when subjected to the N/
ISTA standards.
2679-771339-A05 RELEASED 8/13/13 13
Page 22
Specifications EX800M
2.5.2 Temperature and Humidity
Temperature & Humidity
Operating ambient temperature
Max base casting temperature
S.M.A.R.T. temperature value reported within ±3°C
Humidity 5-95% RH non-condensing
Thermal Gradient 20°C/hour (maximum)
Humidity Gradient 20%/hour (maximum)
Non-operating Temperature -40°C to 70°C
Humidity 5-95% RH non-condensing
Thermal Gradient 30°C/hour (maximum)
Humidity Gradient 20%/hour (maximum)
1
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. The
system environment must allow sufficient air flow to limit maximum surface temperatures as defined.
2
See Figure 2-3 Actual drive case temperature should be below 60°C and within the 5-55°C operating ambient
temperature.
3
Unless still in WD’s factory sealed bag which allows up to 40°C without limit.
1
5°C to 55°C
2
60°C
30°C (maximum wet bulb)
35°C (maximum wet bulb) for up to 21 days
3
2.5.3 Temperature Measurement
Drive component temperatures measured at the drive baseplate thermocouple location must remain
within the limits specified in Table 2-5. Figure 2-3 shows the temperature measurement location.
Sustained operation at temperatures in excess of the reliability values degrades the MTBF rating. Short
excursions up to, but not exceeding, the maximum values will not affect the MTBF rating. Maximum
component temperature ratings must not be exceeded under any operating condition, or product
warranty will be void.
Table 2-5. Maximum and Reliability Operating Temperature Limits (Drive Baseplate)
Component Location Maximum
Drive baseplate See Figure 2-3 60°C (140°F) 40°C
1
Sustained operation at temperatures in excess of the reliability values degrades the MTBF rating.
Figure 2-3. Drive Base Casting Thermocouple Location
Reliability
1
14 RELEASED 8/13/13 2679-771339-A05
Page 23
EX800M Specifications
2.5.4 Cooling
If forced air cooling is required, the drive must be positioned to receive airflow from one or more fans
as indicated in Figure 2-4.
Figure 2-4. Forced Airflow Direction
Above drive
Note: Air can flow in either direction along the path shown.
Below drive
2.5.5 Atmospheric Pressure
Altitude
Operating -1,000 feet to 10,000 feet (-305M to 3,050M)
Non-operating -1,000 feet to 40,000 feet (-305M to 12,200M)
2.5.6 Acoustics
TYPICAL SOUND POWER LEVEL
Idle Mode (average dBA)
Seek Mode (average dBA) 34
1
Measured per ECMA-74/ISO 7779.
2
No audible pure tones.
2
1
31
2.5.7 RoHS (Restriction of Hazardous Substances)
WD hard drive products manufactured and sold worldwide after June 8, 2011, meet or exceed
Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the RoHS
Directive 2011/65/EU. RoHS aims to protect human health and the environment by restricting the
use of certain hazardous substances in new equipment, and consists of restrictions on lead, mercury,
cadmium, and other substances.
2679-771339-A05 RELEASED 8/13/13 15
Page 24
Specifications EX800M
2.6 Agency Approvals
EX800M Regulatory Number (R/N): 771822
These drives meet the standards of the following regulatory agencies:
Underwriters Laboratories: Bi-National UL Standard CAN/CSA-C22.2 No. 60950/UL 60950-
1. Standard for Safety of Information Technology Equipment, including Electrical Business
Equipment (File E101559).
TUV NORD CERT GmbH: IEC 60950-1 per EN 60950-1, Standard for Safety of Information
Technology Equipment, including Electrical Business Equipment. IEC 60065. Standard of Safety
for Audio, Video, and Similar Electronic Apparatus.
CE Compliance for Europe: Complies with EN 55022: 2010 RF/ Conducted Emissions and EN
55024: 2010 Immunity requirements. Including EU Directive 2011/65/EU RoHS II
requirements.
C-Tick Compliance for Australia: Verified to comply with AS/NZS CISPR 22 for RF Emissions
as required by the Australian Communications Authority.
Korean KC Mark: Registered as a Class-B product with the South Korean Ministry of Information
and Communication.
Taiwan BSMI EMI Certification: Certified as a Class-B product with the Bureau of Standards
Metrology and Inspection (BSMI).
2.7 Full Model Number Specification
Table 2-6 below provides a summary specification of the model number suffix for this product
platform.
Table 2-6. Full Model Number Description
Model Number Format ID Product Brand RPM Description
WDxxxFYYZ-xxUL1Bx UL1 WD Re 7200 EX800M 64 MB SATA 6 Gb/s RE
WDxxxFDYZ-01YA5Bx YA5 WD Re 7200 EX800M 64 MB SATA 6 Gb/s RE SED
16 RELEASED 8/13/13 2679-771339-A05
Page 25
EX800M Product Features
3.0 PRODUCT FEATURES
SATA 6 Gb/s
Optional Self Encrypting Drive (SED)
Time Limited Error Recovery (TLER)
Rotary Acceleration Feed Forward (RAFF)™
Perpendicular Magnetic Recording (PMR)
IntelliSeek™
StableTrac™
Native Command Queuing (NCQ)
Pre-Emptive Wear Leveling (PWL)
MicroFemto Slider
S.M.A.R.T. Command Transport (SCT)
World Wide Name (WWN)
Hot Plug Support
Active LED Status
Fluid Dynamic Bearings (FDB)
Staggered Spin-Up and Activity Indication (SATA Power Pin 11)
48-bit Logical Block Addressing (LBA)
Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.)
Security Mode
Optional Model: Full Disk Encryption (FDE)
Data Path Protection (DPP)
Manufacturing Option Block
2679-771339-A05 RELEASED 8/13/13 17
Page 26
Product Features EX800M
3.1 SATA 6 Gb/s
SATA 6 Gb/s is the next generation interface for SATA hard drives. It adds to the functionality of the
SATA II interface with the following features:
Native Command Queuing (NCQ) — server feature for performance in random I/O transaction
environments. It aggregates many small random data transfers and allows the disk to reorder the
commands in a sequential order for faster access.
Improved Power Management— provides improved power management features including Host
Initiated SATA Power Management (HIPM) and Device Initiated SATA Power Management
(DIPM).
Staggered Spin-up — allows the system to control whether the drive will spin up immediately or
wait until the interface is fully ready before spinning up.
Asynchronous Signal Recovery (ASR) — robustness feature that improves signal recovery.
Enclosure Services — defines external enclosure management and support features.
Backplane Interconnect — defines how to lay out signal line traces in a backplane.
Auto-activate DMA — provides increased command efficiency through automated activation of
the DMA controller.
Device Configuration Overlay (DCO) — allows hiding of supported features via a SATA feature
mask.
3.2 Optional Self Encrypting Drive (SED)
Utilizing an AES 256 bit encryption engine for Crypto erase capability, WD supports both industry
standard commands of the Sanitize Feature Set and also the Security Feature Set which utilizes the
Secure Erase Unit (SEU) enhanced mode bit.
*
3.3 Time-Limited Error Recovery (TLER)
WD has delivered coordinated error management in the form of Time Limited Error Recovery
(TLER). TLER-capable hard drives will perform the normal error recovery and, after 7 seconds, issue
an error message to the RAID controller and defer the error recovery task until a later time. With
coordinated error handling, the hard drive is not dropped from the RAID array, thereby avoiding the
entire RAID recovery, replacement, rebuild, and return experience.
The error handling is further coordinated between the TLER-capable hard drive and the RAID card.
The TLER capable drive will respond without waiting on the error to be resolved. RAID cards are very
capable of handling this with a combination of parity protection and journaling. The RAID card flags
the error in the error log and proceeds to deliver data using parity protection until the drive retries its
own error recovery and corrects the error. This is quite similar to error management proven in SCSIRAID for many years. Though TLER is designed for RAID environments, it is fully compatible with
and will not be detrimental when used in non-RAID environments.
* SED drives may require TCG-compliant host or controller support. SED drives may not be available in all countries
18 RELEASED 8/13/13 2679-771339-A05
Page 27
EX800M Product Features
3.4 Rotary Acceleration Feed Forward (RAFF)™
Rotary Acceleration Feed Forward (RAFF) helps to overcome the effects of rotational vibration (RV)
on a hard drive by generating an additional control effort to counter the RV disturbances, thereby
keeping the drive head(s) within the safe operating region during reading and writing operations.
Figure 3-1. Dual Linear Sensor Rotational Acceleration Feed Forward (RAFF)
Rotational
Vibration
Disturbance
Drive
Mechanical
Coupling
Position
Reference
Position
Error
Position
Feedback
Controller
Microprocessor
Motor Power
Driver
Voi ce Coil Motor and
Actua tor Ar m
Position
The RAFF implementation has three major components: RV sensing, RV control effort feedforwarding and adaptation to environmental conditions.
RV sensing in the RAFF implementation is accomplished by using two relatively inexpensive
linear accelerometers placed on the printed circuit board assembly (PCBA). The sensor locations
are optimized for separation distance and PCB mounting conditions. Since the difference signal
from two similar linear accelerometers placed in a parallel orientation and separated by some
distance is indicative of RV, the signals are subtracted from each other to generate a Differential
Sensor Signal (DSS).
RV control effort feed-forwarding is achieved by digitizing the DSS, then, sending it to the
microprocessor of the drive. Using a control algorithm, the microprocessor generates a control
effort signal based on the DSS. This feed forward control effort is in addition to the conventional
servo control approach in hard drive operations.
Adaptation to environmental conditions is crucial to the successful deployment of RAFF. The
WDT design intelligently applies RAFF selectively and adapts to with individual drive parameters
to maintain maximum performance in the hard drive.
3.5 Perpendicular Magnetic Recording (PMR)
In perpendicular magnetic recording (PMR), the magnetization of each data bit is aligned vertically to
the spinning disk, rather than longitudinally as has been the case in hard drive technology for decades.
In longitudinal recording, as the bits become smaller and closer together, they experience an increasing
demagnetizing field, much like two bar magnets that are placed end-to-end repel one another. A
property of the media called coercivity must be increased to counteract the demagnetization to keep the
bits stable under thermal fluctuations; otherwise data corruption may occur over time. Higher media
coercivity has pushed the recording head write field to the limit of known materials.
In perpendicular recording, the adjacent bits attract instead of repel (as with bar magnets placed side by
side,) creating more thermally stable bits. In addition, the media contains a magnetically soft
underlayer (SUL) beneath the recording layer. This SUL allows a larger effective write field, thus higher
coercivity media, enabling further increases in density. Lastly, because of the vertical orientation of the
2679-771339-A05 RELEASED 8/13/13 19
Page 28
Product Features EX800M
bits, the PMR recording layer tends to be thicker than that used for longitudinal recording, providing
increased signal for the read heads. All of these benefits enable WD engineers to reliably pack more data
on a given disk than is possible with conventional longitudinal recording.
3.6 IntelliSeek
WD’s unique IntelliSeek technology proactively calculates an optimum seek speed to eliminate hasty
movement of the actuator that produces noise and requires power, which is common in other drives.
With IntelliSeek, the actuator’s movement is controlled so the head reaches the next target sector just
in time to read the next piece of information, rather than rapidly accelerating and waiting for the drive
rotation to catch up. This smooth motion reduces power usage by more than 60 percent compared
with standard drives, as well as quiets seek operation and lowers vibration.
3.7 StableTrac (Double-tied Shaft Motor)
Used exclusively on WD high-capacity hard drives, StableTrac motors feature both top and bottom
attachment points, which lowers susceptibility to mistracking or misreading data by system-induced
vibration. Most current hard drive designs feature motors that are only attached on the bottom of the
hard drive. StableTrac allows user data to be found fast without encountering issues of missed
revolutions, which is inherent in some designs.
3.8 Native Command Queuing (NCQ)
These drives support Native Command Queuing. NCQ is a true Enterprise feature for environments
such as database, Web servers, and e-mail servers.
Performance of a random I/O workload can be improved through intelligent re-ordering of the I/O
requests so they read/write to and from the nearest available sectors and minimize the need for
additional disk revolutions or head actuator movement. This improvement is achieved though Native
Command Queuing (NCQ).
NCQ allows the drive to re-order read commands, thereby increasing random read IOPs. Additional
NCQ features that can prove beneficial include a Write Cache disabled IOP increase and a queuing
implementation built upon an existing, highly automated cache architecture. Queued reads in NCQ
leverage the same re-ordering schemes used for write caching. The firmware design maintains the
"order" of overlapping/colliding queued commands. NCQ is designed to excel in multi-threaded
environments with high random I/O loads.
3.9 Pre-emptive Wear Leveling (PWL)
This WD feature provides a solution for protecting the recording media against mechanical wear. In
cases where the drive is so busy with incoming commands that it is forced to stay in a same cylinder
position for a long time, the PWL control engine initiates forced seeks so that disk lubricant maintains
an even distribution and does not become depleted. This feature ensures reliability for applications
that perform a high incidence of read/write operations at the same physical location on the disk.
3.10 MicroFemto Slider
These drives incorporate the next generation of femto slider form factor in which the read/write head is
mounted on the small, lightweight microfemto slider that allows the head to move more quickly from
track to track on the disk. WD’s microfemto heads enhance tracking and increase shock tolerance,
producing a highly stable high-density drive platform.
20 RELEASED 8/13/13 2679-771339-A05
Page 29
EX800M Product Features
3.11 S.M.A.R.T. Command Transport (SCT)
The SCT Command Transport feature set provides a method for a host to send commands and data to
a device and for a device to send data and status to a host using log pages. Standard ATA commands
may be interspersed with SCT commands, but SCT commands cannot be nested. SCT commands that
do not require a subsequent data transfer operation are not interspersed with any ATA commands or
each other.
The SCT Command Transport feature set provides a method for a host to send commands and data to
a device and for a device to send data and status to a host using log pages. This capability is used to pass
commands through a driver interface or a bridge where new or unknown commands may be filtered
and not passed to the drive. SCT is also used for issuing commands that require more than 8 parameter
bytes. ATA8-ACS provides detailed information on the usage and capabilities of SCT. The SCT
feature set includes the following commands:
Write Same
Temperature Reporting
3.11.1 Write Same
The Write Same command allows the host to erase the media, or write a pattern repeatedly across the
media, with a minimum of data transfer from the host. The host can clear the entire media to zeros or
a specific pattern by sending this command with the pattern as a parameter—no data transfer is
necessary. Write Same can write the entire media, or just a portion of the media. The host can monitor
the progress of the Write Same by issuing SCT Status requests. This frees the host system to do other
tasks while the media is being cleared.
3.11.2 Temperature Reporting
The SCT Temperature Reporting (SCT TR) feature allows a host system to access temperature
information in the drive. The S.M.A.R.T. temperature value is reported within ±3°C of the base
casting temperature. This information can been used to control fans or adjust the usage of various
system components to keep the drive within its normal operating temperature. Applications include
Enterprise, Laptop, Desktop and Consumer Electronics. SCT TR reports the maximum and minimum
sustained operating limits, warning level limits, and drive damage limits. In addition to reporting the
limits, SCT TR returns the current drive temperature (a temperature history which the host can use to
predict heating or cooling trends) and the maximum temperature acheived during the lifetime of the
drive as well as the highest temperature achieved since the power was applied to the drive. Detailed
information on this capability can be found in ATA8-ACS.
3.12 World Wide Name (WWN)
It has become a critical requirement that hard drives be uniquely identified by computer systems. This
allows a drive to maintain its identity as it is transported from system to system or placed on a network.
IEEE has defined a format for serial numbers that is widely recognized in the computing industry by
adding World Wide Name (WWN) to ATA/ATAPI-7 in 2002.
The World Wide Name (WWN) defined in ATA/ATAPI-7 is a modification of the IEEE Extended
Unique Identifier 64 bit standard (EUI-64) and is comprised of three major components: naming
authority, organizationally unique identifier (OUI) and serial number. WD's OUI is 0014EEh.
3.13 Hot Plug Support
SATA supports hot plugging (also known as “hot swapping”), the ability to swap out a failed hard drive
without having to power down the system or reboot. This capability contributes to both data
availability and serviceability without any associated downtime, making it a critical feature for
extending SATA into enterprise applications.
2679-771339-A05 RELEASED 8/13/13 21
Page 30
Product Features EX800M
The drive supports hot plugging only in systems where a SATA hard drive storage backplane is used.
The SATA 3.0 specification requires staggered pins for both the hard drive and drive receptacles.
Staggered pins mate the power signals in the appropriate sequences required for powering up the hot
plugged device. These pins are also specified to handle in excess of the maximum allowed inrush
current that occurs during drive insertion. SATA-compliant devices thus need no further modification
to be hot pluggable and provide the necessary building blocks for a robust hot plug solution, which
typically includes:
Device detection even with power downed receptacles (typical of server applications).
Pre-charging resistors to passively limit inrush current during drive insertion.
Hot plug controllers to actively limit inrush current during drive insertion.
3.14 Active LED Status
The drive supports external LED requirements. It provides an activity LED output which is ON
during command execution and OFF otherwise.
The drive strength of this open Drain Drive Active signal is that it can sink 12mA to 0.4V Max. It is
5V tolerant, meaning that the external LED may be driven from +5V or +3.3V so long as the Host
system provides a series resistor to limit the LED current to the lower of 12mA or the rated operating
current of the LED. As an example with +5V and a 2 volt forward drop across a 10mA LED, a 300
Ohm 5% 1/16W resistor would be suitable. In the case of a 3.3V supply for the same LED, the resistor
would be 130 Ohm 5% 1/16W.
The pin corresponding to P11 shall be used for Active LED (see “Agency Approvals” on page 16).
3.15 Fluid Dynamic Bearings (FDB)
Bearing design that incorporates a layer of high-viscosity lubricant instead of ball bearings in the hard
drive spindle motor. As an alternative to conventional ball bearing technology, FDB designs provide
increased non-operational shock resistance, speed control, and improved acoustics.
3.16 Staggered Spinup and Activity Indication (SATA Power Pin
11)
SATA device power connector pin 11 (see “Standard Factory Connectors” on page 12) is defined as a
means by the host to DISABLE staggered spinup and it may also be used by the device to provide the
host with an activity indication. According to the SATA spec, "Staggered Spin-up Disable and Activity
Signal shall not be enabled at the same time."
3.16.1 Staggered Spinup
When multiple disks are installed in an enclosure, it is desirable to provide a simple mechanism by
which a subsystem controller can sequence hard drive initialization to minimize the current load
presented during power up. Staggered spinup provides this mechanism by preventing the hard drives
from spinning up until after successful PHY initialization (i.e., after PHY enters DP7:DR_Ready
state).
Staggered spinup is only applicable during initial power-up. If a drive is spun down using ATA
commands—as a result of having been placed in Standby or Sleep power modes, for example—the
drive shall spin up following the rules that govern spinup from low power modes described in ATA/
ATAPI-6 or later.
3.16.2 Activity Indication
The host controller through SATA power pin 11 may access storage device status and activity. The
signal provided by the device for activity indication is a low-voltage low-current signal. It is not suitable
22 RELEASED 8/13/13 2679-771339-A05
Page 31
EX800M Product Features
for directly driving an LED. A buffer circuit external to the device must be employed to drive the LED.
The activity signal is based on an open-collector or open-drain active low driver. The device shall
tolerate the activity signal being shorted to ground.
3.17 48-bit Logical Block Addressing (LBA)
The 48-bit Address feature set allows devices with capacities up to approximately 281 tera sectors or
approximately 144 peta bytes. In addition, the number of sectors that may be transferred by a single
command are increased by increasing the allowable sector count to 16 bits.
48-bit Address
Bits (47:40) Bits (39:32) Bits (31:24) Bits (23:16) Bits (15:8) Bits (7:0)
LBA High (exp) LBA Mid (exp) LBA Low (exp) LBA High LBA Mid LBA Low
16-bit Sector Count
Bits (15:8) Bits (7:0)
Sector Count
(exp)
Sector Count
3.18 Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.)
S.M.A.R.T. helps you monitor a drive’s internal status through diagnostic commands at the host level.
The drive monitors Read Error Rate, Start/Stop Count, Re-allocated Sector Count, Seek Error Rate,
Power-on Hours Count, Spin-up Retry Count, Drive Calibration Retry Count, Drive Power Cycle
Count, Offline Scan Uncorrectable Sector Count, Ultra ATA CRC Error Rate, Multi-zone Error Rate,
Spin-up Time, Relocation Event Count, and Current Pending Sector Count. The hard drive updates
and stores these attributes in the reserved area of the disk. The drive also stores a set of attribute
thresholds that correspond to the calculated attribute values. Each attribute threshold indicates the
point at which its corresponding attribute value achieves a negative reliability status.
3.19 Password Security Mode
The Security Mode feature set allows the user to create a device lock password that prevents
unauthorized hard drive access even if the drive is removed from the computer. This feature varies by
drive configuration and may not be available on all configurations.
3.19.1 Master and User Passwords
The manufacturer/dealer can set a master password using the Security Set Password command, without
enabling the device lock function. The user password should be given or changed by a system user.
Master Password Identifier is supported and set to a default value of 00FE. If a Master Password is set
via a Security Set Password Command, a valid Master Password Revision code value of 0001h – FFFEh
must be used. A Master Password Identifier of 0000h is ignored.
When the master password is set, the drive does not enable the device lock function. When the user
password is set, the drive enables the device lock function, and the drive is locked after the next power
on reset or hard reset.
3.19.2 Security Levels
High - If High level security is set and the user password is forgotten, the master password can be used
to unlock the drive and access the data.
Maximum - If Maximum level security is set and the user password is forgotten, data access is
impossible. Only the master password with a Security Erase Unit command can unlock the drive when
2679-771339-A05 RELEASED 8/13/13 23
Page 32
Product Features EX800M
the device lock function is enabled and the user password has been forgotten. When the Security Erase
Unit command is used to unlock the drive, all user data is erased.
3.20 Optional Model: Self Encrypting Drive (SED)
This product platform has an optional model available that provides Full Disk Encryption (FDE)
utilizing a Hardware AES encryption engine. The encryption capability for this model can be accessed
via the Security Mode’s Secure Erase Unit bit and/or the Sanitize command.
3.20.1 Security Mode FDE
The Security Erase Unit FDE encrypts all the user data before it is written to the media. When the user
wishes to render the data unreadable, the user issues a SECURITY ERASE UNIT command. This
command has two levels: high and maximum. In the high mode, the device writes zeroes over all the
user data on the media. This operation can take hours or days depending on the size of the media and
leaves a known pattern of data on the media. In the maximum mode, the device replaces the encryption
key with a new one. This operation is measured in milliseconds and leaves random data that does not
resemble the original data on the media.
3.20.2 Sanitize Device Feature Set
The Sanitize Device feature set provides two methods to erase data on the hard drive. Once erasure
starts it continues even if power is removed from the hard drive and then reapplied.
The first mode is designed for speed and completes in a few milliseconds. In this mode, all the user data
on the media is encrypted. The erasure occurs by replacing the encryption key rendering the data
unreadable.
The second mode is designed for complete obliteration. In this mode, a pattern is written over all the
sectors that store user data. The time for this method to complete ranges from hours to days depending
on the number and type of data pattern overwrites.
3.21 Data Path Protection (DPP)
DPP prevents possible electronic failures from corrupting data on the hard drive. Although typically a
very rare occurrence, there is the possibility of intermittent failures within the hard drive due to the
electronics or connections on the printed circuit board inducing corruption of the data as it moves
from the interface to the media. By incorporating DPP in our hard drives, WD protects customer data
with the ability to detect these type of rare events, and prevents incorrect data from being written to the
media.
3.22 Manufacturing Option Block
The 8-pin jumper block is for factory use only. Placing a jumper on the pins does not enable any
features or affect drive setup or performance. Do not place a jumper on these pins.
Figure 3-2. Manufacturing Option Block
8-pin Manufacturing Option Block
24 RELEASED 8/13/13 2679-771339-A05
Page 33
EX800M Reliability
4.0 RELIABILITY
4.1 Reliability Specifications
The following reliability specifications assume correct host/drive operational interface, including all
interface timings, power supply voltages, environmental requirements and drive mounting constraints.
You can enhance the reliability of the WD hard drive by ensuring that the drive receives adequate
cooling. Section 2.5.3 Temperature Measurement on page 14 provides temperature measurements and
other information that may be used to enhance the service life of the drive. Recommended airflow
information is provided in Section 2.5.4 Cooling on page 15. The drive shall achieve the MTBF as
specified below when operated in an environment that ensures the HDAs base temperatures specified
in Section 2.5.3 Temperature Measurement on page 14 are not exceeded. Continual or sustained
operation at base temperatures above the values shown in Section 2.5.3 Temperature Measurement on
page 14 may degrade product reliability. The drive incorporates industry standard Self Monitoring,
Analysis and Reporting Technology (SMART).
MTBF is based on the following assumptions:
Average POH 8760 Hours/Year (Power on Hours)
Average Power-on
Cycles
Temperature The allowable continuous or sustained HDA base temperature for the rated MTBF is
Power Voltages As defined in Section 2.4.4 Input Voltage Requirements on page 10.
Cooling Systems will provide adequate cooling to ensure the base temperatures are not
Workload Seen by the system as the total amount of data read from or written to the drive;
Drive Warranty 5 years
Serviceable Life 5 years minimum, assuming 8760 hours/year or less
Demonstrated MTBF 1,200,000 hours. MTBF data is demonstrated using actual drives populated into the
Predicted AFR 0.73% AFR (target)
Preventive
Maintenance
Up to 5,000 cycles/year (10,000 cycles/year when the hard drive spindle is stopped
prior to power removal)
40°C. The maximum allowable HDA base temperature is 60°C (140°F). Operation of
the drive at the maximum base temperature is intended for short time periods only.
Continuous operation at the elevated temperatures will reduce product reliability and
void product warranty.
exceeded
workload should not exceed an annualized total of 550 TB/year. System data
transferred in excess of this workload can lead to accelerated failure rates and impact
product reliability.
RDT chambers for specified period.
None Required
4.2 Error Rates
The error rates stated in this specification assume the following:
The drive is operated per the DC power specified.
The drive has been formatted with the FORMAT UNIT command.
Errors previously detected as caused by media defects are excluded from further error rate
computations.
Random error distribution
2679-771339-A05 RELEASED 8/13/13 25
Page 34
Reliability EX800M
4.2.1 Error Rates
Error Rates are specified as based upon ECC On-The-Fly data correction, automatic retries being
allowed, and all drive flaws reallocated.
Recoverable Read error rate: Less than 1 error in 10
Unrecoverable Read error rate: Less than 10 in 10
Mis-corrected Read error rate: Less than 1 sector in 10
Interface Error Rate: Less than 1 error in 10
4.2.1.1 Seek Errors
A seek error is defined as a failure to position a head over the addressed track. As stated by the seek error
rate above, if the drive detects a seek error it will automatically perform an error recovery procedure. If
this error recovery fails, this is deemed an unrecoverable seek error and the drive will report back an
‘04’h sense key; these errors are classified as a drive failure as defined within our MTBF specification.
4.2.1.2 Read Errors
A typical read can return data at a rate as defined in our performance section without additional drive
delay. This capability is based upon the LDPC (Low Density Parity Check) Channel technology
which provides data with ECC On-The-Fly data correction capability.
12
bits transferred
16
bits transferred
26
bits transferred
12
bits transferred
Beyond this on-the-fly capability, read errors can occur and are defined as follows:
Recoverable – whereby the drives error recovery procedure is required to correctly return the data after
an initial error condition was encountered.
Unrecoverable – whereby the drives error recovery procedures are unable to correctly return the data
requested; this data should be allocated to a new area of the drive.
Mis-corrected – as specified in the error rate above the frequency for this type of occurrence is
extremely rare. This type of event can occur as it relates to the tradeoffs of the channel technology
engine against the quantity, lengths, and patterns of data errors which may occur within a sector. As
mentioned above the LDPC channel is required to enable the recoverable and unrecoverable error rates
as specified above.
Before measuring read error rates, ensure that:
1. The data that is being used for measurement of read error rates must be verified that it is written
correctly on the media.
2. All media defect induced errors must be excluded from error rate calculations.
4.2.1.3 Interface Errors
An interface error is defined as when the drive receiver detects errors of the incoming data whereby the
drive in unable to recover the data as transmitted to the receiver. These errors can include any of:
running disparity errors, illegal code, loss of word sync, or CRC errors.
26 RELEASED 8/13/13 2679-771339-A05
Page 35
EX800M Reliability
4.2.2 Environmental Interference
When evaluating systems under conditions of EMI, the performance of the drive within the system
shall be considered acceptable if the drive does not generate an unrecoverable condition. This
unrecoverable condition is defined as one that:
1. Is not detected and corrected by the drive itself.
2. Is not capable of being detected from the error or fault status provided through the drive or its
interface.
3. Is not capable of being recovered by normal drives or system recovery methods with out operator
intervention.
4.3 Reliability Features Set
4.3.1 Data Lifeguard™
*
Representing WD's ongoing commitment to data protection, Data Lifeguard includes features that
enhance the drive’s ability to prevent data loss. Data Lifeguard data protection utilities include thermal
management, an environmental protection system, and embedded error detection and repair features
that automatically detect, isolate, and repair problem areas that may develop over the extended use of
the drive. With these enhanced data reliability features, the drive can perform more accurate
monitoring, error repair, and deliver exceptional data security.
4.3.2 Thermal Management
The drive is designed with Thermal Management features for high reliability.
State-of-the-art mechanical design—Mechanical design is optimized to reduce the drive’s
temperature. State-of-the-art thermal dissipation and windage design is employed.
Closed loop servo management—Thermal management monitors the drive temperature and can
control servo operations to maintain a stable operating temperature under high temperature
conditions. This is a closed loop servo and thermal control system.
SMART HDA Temperature Attribute—The SMART HDA Temperature Attribute is
supported.
Ducted airflow—Provides protection to the Read/Write element from heated air.
4.3.3 Internal Environmental Protection System
This system protects the inside environment of the drive from contamination. System features include:
Filtration System to ensure fast clean-up times
Directed airflow to maximize mechanical cooling
Increase casting surface area to maximize cooling
Breather filter located at low pressure area
Enhanced heat dissipation
4.3.4 Defect Management
Every WD drive undergoes factory-level intelligent burn in, which thoroughly tests for and maps out
defective sectors on the media before the drive leaves the manufacturing facility. Following the factory
tests, a primary defect list is created. The list contains the cylinder, head, and sector numbers for all
defects.
* Default shipping configuration has Data Lifeguard feature disabled for power management optimization.
2679-771339-A05 RELEASED 8/13/13 27
Page 36
Reliability EX800M
Defects managed at the factory are sector slipped. Grown defects that can occur in the field are mapped
out by relocation to spare sectors on the inner cylinders of the drive.
4.3.5 Recoverable Errors
When a sector is recovered by firmware it is marked as needing repair. When a new host command
writes to that sector, a sector test is performed by writing and reading to that location several times. If
recovery is required to read the sector during the sector test, it is relocated.
4.3.6 Unrecoverable Errors
If an unrecoverable error is found during the offline scan, the sector is marked. Future reads from this
location will continue to perform full error recovery. However, the next write to this location will
perform a sector test to be sure the media is not damaged, and the sector relocated if the sector test fails.
4.3.7 Automatic Defect Retirement
The automatic defect retirement feature automatically maps out defective sectors while reading or
writing. If a defective sector appears, the drive finds a spare sector.
The following are specific to automatic defect retirement on writes (write auto-relocation):
Data is always written to disk (using automatic defect retirement if required) and no error is
reported.
When host retries are enabled, the drive will internally flag any unrecoverable errors (DAMNF or
ECC). This flagging allows subsequent write commands to this location to relocate the sector only
if the sector test fails.
4.3.8 Error Recovery Process
The drive has five means of error recovery:
ECC On-the-Fly
Read/Write Retry Procedure
Extended Read Retry Procedure
ECC On-the-Fly – If an LDPC error occurs, the drive attempts to correct it on-the-fly without retries.
Data can be corrected in this manner without performance penalty. The details of the correction
algorithm appear in the next section.
Read/Write Retry Procedure – This retry procedure is used by all disk controller error types. If the
procedure succeeds in reading or writing the sector being tried, then recovery is complete and the
controller continues with the command. Each retry operation also checks for servo errors. The
procedure ends when error recovery is achieved or when all possible retries have been attempted.
Extended Read Retry Procedure – This retry procedure tries combinations of positive/negative track
offsets and data DAC manipulations to recover the data. This retry procedure applies only to read data
recovery. The Read/Write Retry procedure performs the actual retry operation.
When an extended retry operation is successful, the controller continues with the command. The
controller clears any changes in track offset or data DAC settings before the command continues.
28 RELEASED 8/13/13 2679-771339-A05
Page 37
EX800M ATA Command Set
5.0 ATA COMMAND SET
5.1 Host Interface Commands
5.1.1 ATA-7/ATA-8 Commands
Table 5-1 lists the hexadecimal codes specific to each ATA-7/ATA-8 command supported by these
hard drives. Refer to the D1699 ATA8-ACS specification for full details on each command.
Table 5-1. ATA-7/ATA-8 Command Opcodes
COMMAND HEX OPCODE
CHECK POWER MODE E5
DEVICE CONFIGURATION OVERLAY B1
DOWNLOAD MICROCODE 92
EXECUTE DEVICE DIAGNOSTIC 90
FLUSH CACHE E7
FLUSH CACHE EXT EA
IDENTIFY DEVICE EC
IDLE E3
IDLE IMMEDIATE E1
NOP 00
READ BUFFER E4
READ DMA C8
READ DMA EXT 25
READ FPDMA QUEUED 60
READ LOG EXT 2F
READ LOG DMA EXT 47
READ MULTIPLE C4
READ MULTIPLE EXT 29
READ NATIVE MAX ADDRESS F8
READ NATIVE MAX ADDRESS EXT 27
READ SECTOR(S) 20
READ SECTORS(S) EXT 24
READ VERIFY SECTOR(S) EXT 42
READ VERIFY SECTORS(S) 40
S.M.A.R.T. B0
SECURITY DISABLE PASSWORD F6
SECURITY ERASE PREPARE F3
SECURITY ERASE UNIT F4
SECURITY FREEZE LOCK F5
SECURITY SET PASSWORD F1
SECURITY UNLOCK F2
SET FEATURES EF
SET MAX F9
SET MAX ADDRESS EXT 37
SET MULTIPLE C6
SLEEP E6
2679-771339-A05 RELEASED 8/13/13 29
Page 38
ATA Command Set EX800M
COMMAND HEX OPCODE
STANDBY E2
STANDBY IMMEDIATE E0
WRITE BUFFER E8
WRITE DMA CA
WRITE DMA EXT 35
WRITE FPDMA QUEUED 61
WRITE LOG EXT 3F
WRITE LOG DMA EXT 57
WRITE MULTIPLE C5
WRITE MULTIPLE EXT 39
WRITE SECTOR(S) 30
WRITE SECTOR(S) EXT 34
WRITE UNCORRECTABLE EXT 45
5.1.2 SATA Commands
Table 5-2 lists the hexadecimal codes specific to each SATA command supported by these hard drives.
Refer to the SATA specification for full details on each command.
Table 5-2. Optional Subcommands
COMMAND SUBFUNCTION
DOWNLOAD MICROCODE Mode 3
5.1.3 Obsolete Commands
Table 5-3 lists the hexadecimal codes specific to each obsolete command supported by these hard
drives.
Table 5-3. Obsolete Command Opcodes
COMMAND HEX OPCODE
INITIALIZE DEVICE PARAMETERS 91
RECALIBRATE 10
SEEK 70
30 RELEASED 8/13/13 2679-771339-A05
Page 39
EX800M ATA Command Set
5.1.4 SCT Commands
SCT commands provide capabilities not covered in ATA/ATAPI-7 for commands that do not fit the
ATA command delivery model. Some SCT commands report completion when the command begins
execution. Execution progress for these commands may be checked by requesting SCT status. For
instance, the host can track the progress of a Write Same command by issueing a status request once
per minute. See ATA8-ACS for a full description of SCT.
Table 5-4. SCT Action Codes
ACTION CODE DESCRIPTION
0000h RESERVED
0001h Long Sector Access
0002h Write Same
0004h Features Control
0005h SCT Data Tables
0006h Vendor specific
0007h SCT BIST
C000h FFFFh Vendor specific
5.2 S.M.A.R.T. (B0h)
The S.M.A.R.T. command provides access to attribute values, S.M.A.R.T. status, and other
S.M.A.R.T. information. These commands can be used for logging and reporting purposes, and for
accommodating special user needs.
Prior to writing the S.M.A.R.T. command to the Command Register, the host must write key values
into the LBA Mid and LBA High Registers (4Fh, C2h) or the command will be aborted and an error
will be reported.
The S.M.A.R.T. command has several sub-commands that are selectable via the Features Register when
the host issues the S.M.A.R.T. command. To select a sub-command, the host must write the
appropriate sub-command code to the Features Register before issuing the S.M.A.R.T. command. The
sub-commands and their respective codes are listed below. For more detailed information on executing
S.M.A.R.T. commands, see the ATA-7 specification.
5.2.1 Read Attribute Values Sub-Command
This command returns a sector of data with the drive's S.M.A.R.T. data structure.
Table 5-5. Definitions for the 512 Bytes.
BYTE VALUE DESCRIPTION
0 - 1 0010h S.M.A.R.T. Data Structure Revision
2 -361 XX S.M.A.R.T. Attribute Data
135 - 361 XX S.M.A.R.T. Attribute Data
Offline data collection status
0Xh OL disabled
362 XX
363 XX Self-Test execution status byte.
8Xh OL enabled
X0h scan not run
X2h scan complete
X4h scan suspended
X5h scan aborted
00h The previous self-test routine completed without error or no
01h The self-test routine was aborted by the host
02h The self-test routine was interrupted by the host with a hard or
self-test has ever been run
soft reset
2679-771339-A05 RELEASED 8/13/13 31
Page 40
ATA Command Set EX800M
BYTE VALUE DESCRIPTION
364 - 365 XX
366 XX
367 07Bh
368 - 369 0003h
370 01h
371 XX
372 XX
373 XX
374 XX
375 - 510 XX
511 XX
03h A fatal error or unknown test error occurred while the device
04h The previous self-test completed having a test element that
05h The previous self-test completed having a test element that
06h The previous self-test completed having a test element that
07h The previous self-test completed having a test element that
08h The previous self-test completed having a test element that
090Eh
0Fh Self-test routine in progress
Total time in seconds to complete offline data collection activity
Reserved
Offline data collection capability. Bits are as follows:
S.M.A.R.T. Capability. Bits are as follows:
Error logging capability. Bits are as follows:
Reserved
Short self-test routine completion time in minutes
Extended self-test routine completion time in minutes
Conveyance self-test routine completion time in minutes
Reserved
Checksum
was executing its self-test routine. The device was unable to
complete the self-test routine.
failed. The test element that failed is not known.
failed. The electrical element of the test failed.
failed. The servo (and/or seek) test element of the test failed.
failed. The read element of the test failed.
failed. The element damage is suspected to be caused by
handling.
Reserved
1 = Offline Immediate Command supported
0
1 = Auto Offline enable\disable command supported
1
0 = Offline will suspend on and will resume after host
2
command
1 = Offline read scan implemented
3
1 = DST Short and Extended tests supported
4
1 = DST Conveyance test supported
5
0 - Reserved
6-7
1 = The device saves SMART data prior to going into a power
0
saving mode
1 = Device complies with SMART data autosave after an event
1
Reserved
2-15
1 = Error logging supported
0
Reserved
1
32 RELEASED 8/13/13 2679-771339-A05
Page 41
EX800M ATA Command Set
5.2.2 Supported Attributes
The drive supports the following attributes.
Table 5-6. Supported Attributes
Attribute Attribute ID Number Pre-Failure/Advisory Bit
Read Error Rate 1 Pre-Failure
Spin-up Time 3 Pre-Failure
Start/Stop Count 4 Advisory
Re-allocated Sector Count 5 Pre-Failure
Seek Error Rate 7 Advisory
Power-on Hours Count 9 Advisory
Spin-up Retry Count 10 Advisory
Drive Calibration Retry Count 11 Advisory
Drive Power Cycle Count 12 Advisory
Emergency Retract Cycles 192 Advisory
Load/Unload Cycles 193 Advisory
HDA Temperature
Relocation Event Count 196 Advisory
Current Pending Sector Count 197 Advisory
Offline Scan Uncorrectable Sector Count 198 Advisory
Ultra DMA CRC Error Rate 199 Advisory
Multi-zone Error Rate 200 Advisory
1
Status bits are typical but may vary.
2
See “Temperature Reporting” on page 21 for a better mechanism.
2
194 Advisory
(Status Flags bit 0)
1
Attributes that use the Pre-Failure/Advisory Bit Set can predict potential future degrading or faulty
conditions. Attributes with the Failure/Advisory Bit Clear are used for informational purposes only,
they do not indicate impending drive failure.
The S.M.A.R.T. data saving process is a background task. After a pre-determined idle period, the selfmonitoring data is automatically saved to the disk.
2679-771339-A05 RELEASED 8/13/13 33
Page 42
ATA Command Set EX800M
5.2.3 Read Log Sector
There are several logs that can be read with the S.M.A.R.T. Read Log Sector sub-command. The LBA
Low Register indicates the log sector to be returned.
Table 5-7. Log Address Definition
Log
Log Name Feature Set R/W Access
Address
00h Log directory ExtLog RO GPL, SL
01h Summary Log SMART RO SL
02h Comprehensive SMART error log SMART RO SL
03h
04h Device Statistics N/A RO GPL, SL
05h Reserved Reserved Reserved
06h SMART self-test log SMART RO SL
07h Extended SMART self-test log ExtLog RO GPL
08h Reserved Reserved Reserved
09H Selective self-test log SMART R/W SL
0Ah-0Fh Reserved N/A Reserved
10h NCQ Command Error NCQ RO GPL
11h SATA PHY Counters ExtLog RO GPL
12h-17h Reserved for Serial ATA N/A Reserved
18h-1Fh Reserved N/A Reserved
20h Obsolete
21h Write Stream Error Log Streaming RO GPL
22h Read Stream Error Log Streaming RO GPL
23h Obsolete
24h-7Fh Reserved N/A Reserved
80h-9Fh Host vendor specific SMART / ExtLog R/W GPL, SL
A0h-BFh Device vendor specific SMART / ExtLog VS GPL, SL
C0h-EFh Reserved Reserved Reserved
E0h SCT Command/Status N/A R/W GPL, SL
E1h SCT Data Transfer GPL, SL
E2h-FFh Reserved Reserved Reserved
RO – Read Only
R/W – Read / Write
SMART – Supported by B0h command code.
ExtLog – Supported by 2Fh/3Fh command code.
VS – Vendor Specific
SCT – SMART Command Transport
Extended Comprehensive SMART
error log
ExtLog RO GPL
34 RELEASED 8/13/13 2679-771339-A05
Page 43
EX800M ATA Command Set
5.3 Identify Device (ECh)
The Identify Device command transfers 512 bytes of data that specify the drive’s parameters. Table 5-8
lists the parameters read by the host
Table 5-8. Identify Device Command
WORD FIELD DESCRIPTION VALUE
0 General Configuration 427Ah
1Obsolete 0
2 Specific Configuration XXXX
3Obsolete 0
4-5 Retired 0
6Obsolete 0
7-8 Reserved for assignment by the CompactFlash™ Association 0
9 Retired 0
10-19 Serial Number (ATA String) WDnnnnnnnn
20-21 Retired 0
22 Obsolete 0
23-26 Firmware Revision (ATA String) nnnn
27-46 Model Numbers (ATA String) “WDC WD4000FYYZ-nnnnnn”
47 READ/WRITE MULTIPLE support
48 Trusted Computing feature set options
49 Capabilities
50 Capabilities
51-52 Obsolete 0
Bit 15-8: 80h
Bit 7-0: 00h: Reserved
01h-FFh = Maximum number of logical sectors that shall be
transferred per DRQ data block on READ/WRITE
MULTIPLE commands
Bit 15: Shall be cleared to zero
Bit 14: Shall be set to one
Bit 13-1: Reserved for the Trusted Computing Group
Bit 0: If set, Trusted Computing feature set is supported
Bit 15-14: Reserved for the IDENTIFY PACKET DEVICE
command.
Bit 13: If set, Standby timer values as specified in this
standard are supported.
0 = Standby timer values shall be managed by the device
Bit 12: Reserved for the IDENTIFY PACKET DEVICE
command
Bit 11: If set, IORDY supported
Bit 10: If set, IORDY may be disabled
Bit 9: If set, LBA supported
Bit 8: If set, DMA supported
Bit 7-2: Reserved
Bit 1: Current Long Physical Alignment Setting
Bit 15: Shall be cleared to zero.
Bit 14: Shall be set to one.
Bit 13-2: Reserved.
Bit 1: Obsolete
Bit 0: Shall be set to one to indicate a device specific
Standby timer value minimum
“WDC WD4000FYYX-nnnnnn”
“WDC WD4000FDYZ-nnnnnn”
“WDC WD3000FYYZ-nnnnnn”
“WDC WD3000FYYX-nnnnnn”
“WDC WD3000FDYZ-nnnnnn”
“WDC WD2000FYYZ-nnnnnn”
“WDC WD2000FYYX-nnnnnn”
“WDC WD2000FDYZ-nnnnnn”
8010h
0
2F00h
4001h
2679-771339-A05 RELEASED 8/13/13 35
Page 44
ATA Command Set EX800M
53 Additional Words Valid
Bit 8-15: Free-fall Control Sensitivity
00h = Vendor’s recommended setting
01h-FFh = Sensitivity level. A larger number is a
more sensitive setting.
Bit 7-3: Reserved
Bit 2: If set, the fields reported in word 88 are valid
Bit 1: If set, the fields reported in words 70-64 are valid
Bit 0: Obsolete
54-58 Obsolete 0
59 Current Blocking Factor
Bit 15: 1=The BLOCK ERASE EXT command is supported
Bit 14: 1= The OVERWRITE EXT command is supported
Bit 13: 1=The CRYPTO Scramble EXT command is
supported
Bit 12: 1=The Sanitize feature set is supported
Bit 9-11 Reserved
Bit 8: 1=Multiple local sector setting is valid
Bit 0-7: Current setting for number of logical sectors that
shall be transferred per DRQ data block on READ/WRITE
Multiple commands
60-61 Total number of user addressable logical sectors for 28 bit
62 Obsolete 0
63 Multi-Word DMA Transfer Mode Supported
64 Advanced PIO Modes Supported
65 Min. Multi-Word DMA Transfer Cycle Time (ns)
66 Manufacturer Recommended Multi-Word DMA Cycle Time
67 Min. PIO Transfer Cycle Time without flow control
68 Min. PIO Transfer Cycle Time with IORDY flow control
69 Additional Supported
70 Reserved 0
71-74 Reserved for the Identify Packet Device command 0
commands (DWord)
Bit 15-11: Reserved
Bit 10: If set, Multiword DMA mode 2 is selected
Bit 9: If set, Multiword DMA mode 1 is selected
Bit 8: If set, Multiword DMA mode 0 is selected
Bit 7-3: Reserved
Bit 2: If set, Multiword DMA mode 2
Bit 1: If set, Multiword DMA mode 1
Bit 0: If set, Multiword DMA mode 0
Bits 0-7: PIO Modes supported
Bit 15-0: Cycle time in nanoseconds
Bit 15-0: Cycle time in nanoseconds
Bit 15-0: Cycle time in nanoseconds
Bit 15-0: Cycle time in nanoseconds
Bit 15: If set, CFast Specification Support
Bit 14: If set, Deterministic data in trimmed LBA range(s) is
supported
Bit 13: If set, Long Physical Sector Alignment Error
Reporting Control is supported
Bit 12: If set, DEVICE CONFIGURATION IDENTIFY DMA
and DEVICE CONFIGURATION SET DMA are supported
Bit 11: If set, READ BUFFER DMA is supported
Bit 10: If set, WRITE BUFFER DMA is supported
Bit 9: If set, SET MAX SET PASSWORD DMA and SET
MAX UNLOCK DMA are supported
Bit 8: If set, DOWNLOAD MICROC
Bit 6: If set, Optional ATA device 28-bit commands
supportedODE DMA is supported
Bit 7: If set, Reserved for IEEE 1667
Bit 5: If set, Trimmed LBA range(s) returning zeroed data is
supported
Bit 4: If set, Device Encrypts All User Data
Bit 3: If set, Extended Number of User Addressable Sectors
is supported
Bit 2-0: Reserved
0007h
XXh
0FFFFFFFh
XX07h
0003h
120
120
120
120
0
36 RELEASED 8/13/13 2679-771339-A05
Page 45
EX800M ATA Command Set
75 Queue Depth
Bit 15-5: Reserved
Bit 4-0: Maximum queue depth - 1
76 Serial ATA Capabilities
77 Reserved for Serial ATA 0002h
78 Serial ATA Features Supported
79 Serial ATA Features Enabled
80 Major Version Number
81 Minor Version Number 0000h
82 Command and feature sets supported
Bit 15-13: Reserved
Bit 12: If set, supports Native Command Queuing priority
information
Bit 11: If set, supports Unload while NCQ commands
outstanding
Bit 10: If set, supports Phy event counters
Bit 9: If set, supports receipt of host-initiated interface
power management requests
Bit 8: If set, supports Native Command Queuing (NCQ)
Bit 7-3: Reserved for future Serial ATA signaling speed
grades
Bit 2: If set, supports Serial ATA Gen2 signaling speed
(3 Gb/s)
Bit 1: If set, supports Serial ATA Gen1 signaling speed
(1.5 Gb/s)
Bit 0: Shall be cleared to zero
Bit 7-15: Reserved for Serial ATA
Bit 6: If set, device supports software settings preservation
Bit 5: Reserved for Serial ATA
Bit 4: If set, device supports in-order data delivery
Bit 3: If set, device supports initiating power management
Bit 2: If set, device supports DMA Setup Auto-activation
Bit 1: If set, device supports non-zero buffer offsets
Bit 0: Cleared to zero
Bits 7-15: Reserved for Serial ATA
Bit 6: If set, software settings preservation enabled
Bit 5: Reserved for Serial ATA
Bit 4: If set, In-order data delivery enabled
Bit 3: If set, device initiated power management enabled
Bit 2: If set, DMA Setup Auto-activation enabled
Bit 1: If set, non-zero buffer offsets enabled
Bit 0: Cleared to zero
Bit 15-10: Reserved
Bit 9: if set, supports ACS-2
Bit 8: if set, supports ATA8-ACS
Bit 7: if set, supports ATA/ATAPI-7
Bit 6: if set, supports ATA/ATAPI-6
Bit 5: if set, supports ATA/ATAPI-5
Bit 4 –1: Obsolete
Bit 0: Reserved
Bit 14: If set, NOP command supported
Bit 13: If set, Read buffer command supported
Bit 12: If set, Write buffer command supported
Bit 11: Obsolete
Bit 10: If set, Host Protected Area Feature Set supported
Bit 9: If set, Device Reset command supported
Bit 8: If set, Service interrupt supported
Bit 7: If set, Release interrupt supported
Bit 6: If set, look-ahead supported
Bit 5: If set, Write Cache supported
Bit 4: Cleared to 0 to indicate that the PACKET feature set
is not supported.
Bit 3: If set, mandatory Power Management Feature Set
supported
Bit 2: Obsolete
Bit 1: If set, Security Feature Set supported
Bit 0: If set, SMART Feature Set supported
1001 1101 0000 0110b
0000 0000 0X0X XXX0b
0111 0100 0110 1011b
001Fh
950Eh
0000 0000 0100 1000
0044h
01FEh
746Bh
2679-771339-A05 RELEASED 8/13/13 37
Page 46
ATA Command Set EX800M
83 Command Set Supported
Bit 15: Shall be cleared to 0
Bit 14: Shall be set to 1
Bit 13: If set, Flush Cache EXT command supported
Bit 12: If set, mandatory Flush Cache command supported
Bit 11: If set, DCO feature set supported
Bit 10: If set, 48-bit Address Feature Set supported
Bit 9: Not supported
Bit 8: If set, Set Max Security Extension supported
Bit 7: Reserved
Bit 6: If set, Set Features subcommand required to spin-up
after power-up
Bit 5: If set, Power-Up In Standby feature set supported
Bit 4: Obsolete
Bit 3: If set, Advanced Power Management feature set
supported
Bit 2: If set, CFA feature set supported
Bit 1: If set, Read/Write DMA Queued supported
Bit 0: If set, Download Microcode command supported
84 Command and feature sets supported
Bit 15: Shall be cleared to zero
Bit 14: Shall be set to one
Bit 13: If set, Idle Immediate with Unload Feature supported
Bit 12: Reserved
Bit 11: Reserved
Bit 9-10: Obsolete
Bit 8: If set, 64-bit World wide name supported
Bit 7: If set, Write DMA Queued FUA EXT command
supported
Bit 6: If set, Write DMA FUA EXT and Write Multiple FUA
EXT commands supported
Bit 5: If set, General Purpose Logging feature set supported
Bit 4: If set, Streaming Feature Set supported
Bit 3: Obsolete
Bit 2: If set, Media serial number supported
Bit 1: If set, SMART Self-Test supported
Bit 0: If set, SMART Error Logging supported
85 Command and feature sets supported or enabled
86 Commands and feature sets supported or enabled
Bit 15: Obsolete
Bit 14: If set, NOP command supported
Bit 13: If set, Read Buffer command supported
Bit 12: If set, Write Buffer command supported
Bit 11: Obsolete
Bit 10: If set, Host Protected Area has been established
Bit 9: If set, DEVICE RESET command supported
Bit 8: If set, SERVICE interrupt enabled
Bit 7: If set, Release Interrupt enabled
Bit 6: If set, Read look-ahead enabled
Bit 5: If set, Volatile Write cache enabled
Bit 4: Cleared to 0 to indicate that the PACKET feature set
is not supported
Bit 3: Set to 1 to indicate that the Mandatory Power
Management feature set is supported
Bit 2: Obsolete
Bit 1: If set, Security Feature Set enabled
Bit 0: If set, SMART Feature Set enabled
Bit 15: If set, Words 119-120 are valid
Bit 14: Reserved
Bit 13: If set, Flush Cache EXT command supported
Bit 12: If set, Flush Cache command supported
Bit 11: If set, Device Configuration Overlay supported
Bit 10: If set, 48-bit Address Feature Set supported
Bit 9: Not supported
Bit 8: If set, Set Max Security Extension enabled by Set Max
Set Password
Bit 7: Reserved
Bit 6: If set, Set Features subcommand required to spin-up
after power-up
Bit 5: If set, Power-Up In Standby feature set enabled
Bit 4: Obsolete
Bit 3: If set, Advanced Power Management feature set
enabled
Bit 2: If set, CFA Feature Set enabled
Bit 1: If set, Read/Write DMA Queued command supported
Bit 0: If set, Download Microcode command supported
0111 1101 0110 1001b
7D69h
0110 0001 0110 0011b
6163h
0111 0X0X XXX0 10XXb
1011 11XX 01X0 X001b
38 RELEASED 8/13/13 2679-771339-A05
Page 47
EX800M ATA Command Set
87 Commands and feature sets supported or enabled
Bit 15: Shall be cleared to zero
Bit 14: Shall be set to 1
Bit 13: If set, Idle Immediate with Unload Feature supported
Bit 12: Reserved
Bit 11: Reserved
Bit 9-10: Obsolete
Bit 8: If set, 64-bit World wide name supported
Bit 7: If set, Write DMA Queued FUA EXT command
supported
Bit 6: If set, Write DMA FUA EXT and Write Multiple FUA
EXT commands supported
Bit 5: If set, General Purpose Logging Feature Set
supported
Bit 4: Obsolete
Bit 3: If set, Media Card Pass Through Command feature
set supported
Bit 2: If set, Media serial number is valid
Bit 1: If set, SMART Self-Test supported
Bit 0: If set, SMART Error Logging supported
88 Ultra DMA modes
Bit 15: Reserved
Bit 14: If set, Ultra DMA Mode 6 is selected
Bit 13: If set, Ultra DMA Mode 5 is selected
Bit 12: If set, Ultra DMA Mode 4 is selected
Bit 11: If set, Ultra DMA Mode 3 is selected
Bit 10: If set, Ultra DMA Mode 2 is selected
Bit 9: If set, Ultra DMA Mode 1 is selected
Bit 8: If set, Ultra DMA Mode 0 is selected
Bit 7: Reserved
Bit 6: Ultra DMA mode 6 supported
Bit 5: Ultra DMA mode 5 supported
Bit 4: Ultra DMA mode 4 supported
Bit 3: Ultra DMA mode 3 supported
Bit 2: Ultra DMA mode 2 supported
Bit 1: Ultra DMA mode 1 supported
Bit 0: Ultra DMA mode 0 supported
89 Bit 15-8: Reserved
90 Bit 15-8: Reserved
91 Current APM level value XXXXh
92 Master Password Identifier XXXXh
93 Hardware reset result 0
94 Obsolete 0
95 Stream Minimum Request Size 0
96 Stream Transfer Time - DMA 0
97 Stream Access Latency -DMA and PIO 0
98-99 Stream Performance Granularity (Dword) 0
100-103 Total number of User Addressable Logical Sectors (QWord) WD4000FYYZ/FYYX/FDYZ
104 Streaming Transfer Time - PIO 0
105 Maximum number of 512 byte blocks per Data Set
106 Physical sector size / logical sector size
Bit 7-0: Time required for Normal Erase mode SECURITY
ERASE UNIT command
Bit 7-0: Time required for Normal Erase mode SECURITY
ERASE UNIT command
Management command
Bit 15 Shall be cleared to zero
Bit 14 Shall be set to one
Bit 13 if set, Device has multiple logical sectors per physical sector.
Bit 12 if set, Device Logical Sector longer than 256 Words
Bits 11-4 Reserved
Bits 3-0 2X logical sectors per physical sector
0110 0001 0110 XX11b
0XXX XXXX 0111 1111b
BBh
BBh
(7,814,037,168)
WD3000FYYZ/FYYX/FDYZ
(5,860,533,168)
WD2000FYYZ/FYYX/FDYZ
(3,907,029,168)
0
0
2679-771339-A05 RELEASED 8/13/13 39
Page 48
ATA Command Set EX800M
107 Inter-seek delay for ISO 7779 standard acoustic testing 0
108-111 World Wide Name XXXXXXXXXXXXXXXX
112-115 Reserved 0
116 Reserved for TLC 0
117-118 Logical Sector size (DWord) 0
119 Commands and feature sets supported (Continued from words
120 Commands and feature sets supported (Continued from words
121-126 Reserved 0
127 Obsolete 0
128 Security Status
129-159 Vendor Specific 0
160 CFA power mode
161-167 Reserved for the CompactFlash™ Association 0
168 Device Nominal Form Factor
169 Data Set Management Command
170-173 Additional Product Identifier 0
174-175 Reserved 0
176-205 Current Media Serial number 0
82-84)
Bit 15: Cleared to zero
Bit 14: Shall be set to one
Bit 13-8: Reserved
Bit 7: If set, Extended Power Conditions feature set
supported
Bit 6: If set, Sense Data Reporting supported
Bit 5: If set, Free-fall Control feature set is supported
Bit 4: If set, DOWNLOAD MICROCODE with offsets is
supported
Bit 3: If set, READ and WRITE DMA EXT GPL optional
commands are supported
Bit 2: If set, WRITE UNCORRECTABLE EXT is supported
Bit 1: If set, Write-Read-Verify feature set is supported
Bit 0: Reserved for DDT
85-87)
Bit 15: Cleared to zero
Bit 14: Shall be set to one
Bit 13-8: Reserved
Bit 7: If set, Extended Power Conditions feature set
supported
Bit 6: If set, Sense Data Reporting supported
Bit 5: If set, Free-fall Control feature set is supported
Bit 4: If set, DOWNLOAD MICROCODE with offsets is
supported
Bit 3: If set, READ and WRITE DMA EXT GPL optional
commands are supported
Bit 2: If set, WRITE UNCORRECTABLE EXT is supported
Bit 1: If set, Write-Read-Verify feature set is supported
Bit 0: Reserved for DDT
Bit 15-9: Reserved
Bit 8: Security level (0 = High, 1 = Maximum)
Bit 7-6: Reserved
Bit 5: If set, Enhanced Security Erase supported
Bit 4: If set, Security count expired
Bit 3: If set, Security Frozen
Bit 2: If set, Security Locked
Bit 1: If set, Security enabled
Bit 0: If set, Security supported
Bit 15: Word 160 supported
Bit 14: Reserved
Bit 13: CFA power mode
Bit 12: CFA power mode 1 disable
Bit 11-0: Maximum current in ma
Bit 15-4: Reserved
Bit 3-0: Device Nominal Form Factor
Bit 15-1: Reserved
Bit 0: if set, the Trim bit in the Data Set Management
command supported
0100 0000 1001 1100b
401Ch
0100 0000 0001 1100b
401Ch
0000 000X 001X XXX1b
0
0
0
40 RELEASED 8/13/13 2679-771339-A05
Page 49
EX800M ATA Command Set
206 SCT Command Transport
Bit 15-12: Vendor Specific
Bit 11-6: Reserved
Bit 5: If set, SCT Data tables command supported
Bit 4: If set, SCT Features Control command supported
Bit 3: If set, SCT Error Recovery Control command
supported
Bit 2: If set, SCT Write Same command supported
Bit 1: If set, Obsolete
Bit 0: If set, SCT Command Transport supported
207-208 Reserved 0
209 Alignment of logical blocks within a physical block
Bit 15: Shall be cleared to zero
Bit 14: Shall be set to one
Bits 13-0: Logical sector offset within the first physical
sector where the first logical sector is placed.
210-211 Write-Read-Verify Sector Count Mode 3 0
212-213 Write-Read-Verify Sector Count Mode 2 0
214 NV Cache Capabilities
Bit 15-12: NV Cache feature set version
Bit 11-8: NV Cache Power Mode feature set version
Bit 7-5: Reserved
Bit 4: If set, NV Cache feature set enable
Bit 3-2: Reserved
Bit 1: If set, NV Cache Power Mode feature set enable
Bit 0: if set, NV Cache Power Mode feature set supported
215-216 NV Cache Size in Logical Blocks 0
217 Nominal media rotation rate 0
218 Reserved 0
219 NV Cache Options
Bit 15-8: Reserved
Bit 7-0: Device Estimate Time to spin up in seconds
220 Bit 15-8: Reserved
Bit 7-0: Write-Read-Verify feature set current mode
221 Reserved 0
222 Transport major version number
223 Transport minor version number 0
224-229 Reserved 0
230-233 Extended Number of User Addressable Sectors (Qword) 0
234 Minimum number of 512-byte data blocks per DOWNLOAD
235 Maximum number of 512-byte data blocks per DOWNLOAD
236-254 Reserved 0
255 Integrity Word
0000h or FFFFh=device does not report version
Bit 12-15: Transport Type (0h=Parallel 1h=Serial 2hFh=Reserved)
Bit 6-11: Reserved (Parallel, Serial)
Bit 5: Reserved SATA Rev. 3.0
Bit 4: Reserved SATA Rev. 2.6
Bit 3: Reserved SATA Rev. 2.5
Bit 2 : Reserved SATA II: Extensions
Bit 1: ATA/ATAPI-7 SATA 1.0a
Bit 0: ATA8-APT ATA8-AST
MICROCODE command for mode 03h
MICROCODE command for mode 03h
Bit 15-8: Checksum
Bit 7-0: Signature
0111 0000 1011 1111b
70BFh
0
0
0
0
0001 0000 0011 1110b
103Eh
0001h
1000h
XXA5h
2679-771339-A05 RELEASED 8/13/13 41
Page 50
ATA Command Set EX800M
5.4 Set Features (EFh)
The Set Features command enables or disables the features listed in the following table.
FUNCTION FEATURES
REGISTER
Enable read cache
Disable read cache
Enable write cache
Disable write cache
Set Transfer Mode 03h Don’t care
Enable use of Serial ATA Feature
Disable use of Serial ATA Feature
1
Changes are only valid while power remains applied to the drive. After power is cycled, the drive reverts to the default
settings.
1
1
1
1
AAh Don’t care
55h Don’t care
02h Don’t care
82h Don’t care
10h
90h
02h-DMA Setup FIS Auto-Activate optimization
06h-Software Settings Preservation
02h-DMA Setup FIS Auto-Activate optimization
06h-Software Settings Preservation
SECTOR COUNT REGISTER
42 RELEASED 8/13/13 2679-771339-A05
Page 51
EX800M Drive Handling and Maintenance
6.0 DRIVE HANDLING AND MAINTENANCE
Hard drives are precision instruments that must be handled with care to prevent damage. It is important to
understand that drives are typically damaged because of Electrostatic Discharge (ESD), rough handling, or shock
and vibration. Refer to the latest version of the WD 3.5-inch Hard Drive Handling poster (part number 2378-
701046) for details on drive handling.
Refer to http://support.wdc.com/warranty for detailed instructions on all phases of repackaging the drive.
Important: If your system does not support hot plugging (see “Hot Plug Support” on page 21), it
must be turned off and unplugged before installing your hard drive.
6.1 Unpacking
6.1.1 Handling Precautions
WD products are designed to withstand normal handling during unpacking and installation. Take care
to avoid excessive mechanical shock or electrostatic discharge (ESD), which can permanently damage
the hard drive and void the warranty. Hard drives are typically damaged because of ESD, rough
handling, or shock and vibration.
To avoid ESD problems, wear a properly grounded wrist strap when handling the hard drive. Articles
of clothing generate static electricity. Do not allow clothing to come in direct contact with the hard
drive or circuit board components.
When the WD drive is not in its shipping container or installed in its proper host enclosure, it must
remain in the antistatic bag. To prevent damage, do not unpack your WD drive until you are ready to
install it.
6.1.2 Inspection of Shipping Container
Carefully examine the container for obvious shipping damage, such as: holes, signs of crushing, or
stains. Notify the carrier and your WD representative if you observe any shipment damage. Always
move the shipping container in the upright position indicated by the arrows on the container.
6.1.3 Removal From Shipping Container
Remove the WD drive from the shipping container only for inspection or installation. Carefully open
the box. When removing the WD drive from the box, follow these precautions:
Grasp the drive by the sides only; avoid touching the circuit board components.
Gently place the drive on its antistatic bag on a clean, level, grounded work area.
Do not stack drives or stand the WD drive on its edge.
CAUTION: When removing the drive from the shipping container, be careful not to drop it.
Dropping the drive can severely damage the head disk assembly or printed circuit board.
2679-771339-A05 RELEASED 8/13/13 43
Page 52
Drive Handling and Maintenance EX800M
6.1.4 Removal From Static Shielding Bag
Before removing the drive from its static shielding bag:
Make sure that your work station is properly grounded.
Wear a properly grounded wrist strap with good skin contact.
Avoid contact with any component on the printed circuit board.
After attaching your wrist strap, gently remove the drive from the static shielding bag.
Handle the drive by the sides only; avoid touching the printed circuit board.
Handle the drive with the printed circuit board facing downward during installation.
Do not open the drive’s sealed compartment or remove the seals or any labels from the drive; this
will void the warranty.
6.1.5 Moving Precautions
If you need to move your computer, turn off the power to automatically unload the heads. This helps
protect the media and the heads from accidental damage due to vibration, moving, or shipping.
6.2 Hard Drive Installation
Before you attempt to install this drive, you will need to understand if your system supports a hard
drive larger than 2.19 TB. Visit http://products.wdc.com/largecapacitydrives for more information on the
2.19 TB capacity barrier.
If your system does not support hot plugging (see “Hot Plug Support” on page 21), it must be turned
off and unplugged before installing your hard drive. This avoids the possibility of reversing the polarity
of the power connections and eliminating current surges that can damage either the drive or computer.
Attach the SATA power supply cable to the SATA device plug power connector (see “Standard Factory
Connectors” on page 12). Both the SATA power and signal connector are keyed to ensure proper
insertion.
Figure 6-1. SATA Cable Connections
SATA device plug
interface connector
SATA device plug
power connector
SATA receptacle
interface connector
SATA receptacle
power connector
44 RELEASED 8/13/13 2679-771339-A05
Page 53
EX800M Drive Handling and Maintenance
6.2.1 Backplane Usage
The maximum allowable blind-mate tolerance is ± 1.50 mm in the X-axis.
The maximum allowable blind-mate tolerance is ± 1.00 mm in the Z-axis.
The above tolerances are based on the X-Y plane being perpendicular to Y-Z plane.
See Figure 6-2 and Figure 6-3 for the industry-standard connector pin dimensions and references.
Figure 6-2. Connector Pair Blind Mate Misalignment Allowable
Figure 6-3. Device Backplane Connection
2679-771339-A05 RELEASED 8/13/13 45
Page 54
Drive Handling and Maintenance EX800M
6.3 Maintenance
The hard drive requires no preventative maintenance and contains no user-serviceable parts. The
service and repair of drives can only be performed at a WD Service Center. Please contact your WD
representative for warranty information and service/return procedures.
Observe the following precautions to prolong the life of the drive:
Do not attempt to open the sealed compartment of the drive as this will void the warranty.
Do not lift a drive by the printed circuit board.
Avoid static discharge when handling a drive.
Avoid harsh shocks or vibrations.
Do not touch the components on the printed circuit board.
Observe the environmental limits specified for this product.
If it becomes necessary to move your computer system, turn off the power to automatically unload
the heads. This helps protect the media and the heads from accidental damage due to vibration
while moving or shipping.
To protect your data, back it up regularly. WD assumes no responsibility for loss of data. For
information about back-up and restore procedures, consult your operating system manual. There
are also a number of utility programs available that you can use to back up your data.
46 RELEASED 8/13/13 2679-771339-A05
Page 55
EX800M Technical Support
7.0 TECHNICAL SUPPORT
NORTH AMERICA
US/Canada
Monday - Thursday 8:00 am - 9:00 pm
Friday - Sunday 8:00 am - 7:00 pm
EUROPE
Central European Time (CET) 00800.27549338 (toll-free where available) or +31.880062100
Monday - Thursday 9:00 am - 7:00 pm
Friday 9:00 am - 5:00 pm
(Central Time)
7.1 WD Online Services
WD provides a wide variety of technical support services on our website at http://support.wd.com.
800.ASK.4WDC (800.275.4932)
2679-771339-A05 RELEASED 8/13/13 47
Page 56
Glossary EX800M
8.0 GLOSSARY
Active LED Status — The WD drive supports external LED requirements. It provides an activity LED output
which is ON during command execution and OFF otherwise.
Annualized Failure Rate (AFR) — A method of measuring failure rates or trends for a group of units at a site.
The rates are based on the monthly total number of returned field failure units divided by the total cumulative
installed base and multiplied by 12 (to annualize the failure rate).
Automatic Defect Retirement — If defective sectors are found during a read or write, they are automatically
mapped out and relocated.
Block — A group of bytes handled, stored, and accessed as a logical data unit, such as an individual file record.
Buffer — A temporary data storage area that compensates for a difference in data transfer rates and/or data
processing rates between sender and receiver.
Data Lifeguard™ — Representing WD's ongoing commitment to data protection, Data Lifeguard data
protection utilities include thermal management, an environmental protection system, and embedded error
detection and repair features that automatically detect, isolate, and repair problem areas that may develop over
the extended use of the hard drive.
Data Transfer Rate — The rate that digital data is transferred from one point to another, expressed in bits per
second or bytes per second. Data Transfer Rate to Disk: The internal disk transfer rate in Mbits per second. Data
Transfer Rate from the Buffer to the Host: Based on the transfer of buffered data in MB per second.
Defect Management — A general methodology of eliminating data errors on a recording surface by mapping
out known bad areas of the media.
Data Path Protection (DPP) — A feature that prevents possible electronic failures by preventing corruption of
data on the hard drive.
Dual Stage Actuator (DSA) — DSA is an improvement to the overall capability of the Servo system and
provides a mechanical benefit to improve the response time (higher Bandwidth capability) of moving and
maintaining the head position over the data tracks.
ECC On-the-Fly — WD utilizes an LDPC hardware correction technique that corrects errors prior to host
transfer without any performance penalties. These error corrections are invisible to the host system because they
do not require assistance from the drive’s firmware.
Error Correction Code (ECC) — A mathematical algorithm utilizing LDPC technology that can detect and
correct errors in a data field by adding check bits to the original data.
F.I.T. (Functional Integrity Testing) — A suite of tests WD performs on all its drive products to ensure
compatibility with different hosts, operating systems, application programs, and peripherals. This testing must
be performed before the product can be released to manufacturing.
Fluid Dynamic Bearings (FDB) — Bearing design that incorporates a layer of high-viscosity lubricant instead
of ball bearings in the hard drive spindle motor. FDB designs provide increased non-operational shock
resistance, speed control, and improved acoustics.
Formatted Capacity — The actual capacity available to store data in a mass storage device. The formatted
capacity is the gross capacity minus the capacity taken up by the overhead data required for formatting the
media.
Hot Plugging — The ability to swap out a failed hard drive without having to power down the system or reboot.
IntelliSeek — WD technology that proactively calculates an optimum seek speed to eliminate hasty movement
of the actuator that produces noise and requires power.
Latency — The period of time that the read/write heads wait for the disk to rotate the data to an accessible
position. For a disk rotating at 10,000 RPM, the average latency is 3 milliseconds.
Logical Block Address — An alternative addressing methodology of identifying a given location on a SATA
drive that permits disk sizes greater than 528 MB.
48 RELEASED 8/13/13 2679-771339-A05
Page 57
EX800M Glossary
MicroFemto Slider — These drives incorporate the next generation femto slider form factor in which the read/
write head is mounted on the small, lightweight microfemto slider that allows the head to move more quickly
from track to track on the disk.
Native Command Queuing (NCQ) — NCQ allows the drive to re-order read commands, thereby increasing
random read IOPs. NCQ is a true Enterprise feature for environments such as database, Web servers, and e-mail
servers.
Pre-emptive Wear Leveling (PWL) — WD feature that provides a solution for protecting the recording media
against mechanical wear.
PRML (Partial Response Maximum Likelihood) — A read channel using sampled data, active equalization and
Veterbi detection to accurately retrieve the user data off the disk.
RoHS (Restriction of Hazardous Substances) — WD hard drive products manufactured and sold worldwide
after June 8, 2011, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as
mandated by the RoHS Directive 2011/65/EU. RoHS aims to protect human health and the environment by
restricting the use of certain hazardous substances in new equipment, and consists of restrictions on lead,
mercury, cadmium, and other substances.
Rotary Acceleration Feed Forward (RAFF) — These drives employ RAFF technology to maintain hard drive
performance in high vibration environments through adaptive compensation of the servo system.
Rotational Latency — The amount of delay in obtaining information from a disk drive that can be attributed to
the rotation of the disk. For a disk rotating at 10,000 RPM, the average latency is 3 milliseconds.
RPM (Revolutions per Minute) — Rotational speed of the media (disk), also known as the spindle speed.
Seek Time — The time it takes for the read/write head to move to a specific block of data on the hard drive. The
average seek time is computed by dividing the time it takes to complete a large number of random seeks by the
number of seeks performed.
Sector — A 512-byte packet of data.
Self Encrypting Drive (SED) — An optional secure model for encrypting and repurposing the drive utilizing an
AES 256-bit encryption engine for Crypto erase capability.
Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.) — A technology to assist the user in
preventing possible system down time due to hard drive failure.
Serial ATA ( S ATA) — SATA is the next generation bus interface for hard drives. It is designed to replace Parallel
ATA, and has many advantages including increased transfer rate, improved signal integrity, enhanced data
protection, and hot plugging.
S.M.A.R.T. Command Transport (SCT) — The SCT Command Transport feature set provides a method for a
host to send commands and data to a device and for a device to send data and status to a host using log pages.
StableTrac™ — The motor shaft is secured at both ends to reduce system-induced vibration and stabilize
platters for accurate tracking, during read and write operations.
Staggered Spinup — SATA feature that allows the system to control whether the drive will spin up immediately
or wait until the interface is fully ready.
Thermal Asperity — A thermal asperity is a baseline shift in the readback signal due to heating of the
magnetoresistive stripe on the head as a result of physical contact with the disk or a particle.
Time-Limited Error Recovery (TLER) — TLER prevents hard drive error recovery fallout by limiting the time
the drive spends in error recovery, providing increased performance, improved availability, and lower total cost
of ownership in RAID arrays.
Unrecoverable Error — A read error that cannot be overcome by an ECC scheme or by rereading the data when
host retries are enabled.
Wor ld Wi de Na m e ( WW N) — The World Wide Name (WWN) defined in ATA/ATAPI-7 is a modification of
the IEEE extended unique identifier 64 bit standard (EUI-64) and is comprised of three major components:
naming authority, organizationally unique identifier (OUI) and serial number. WD's OUI is 0014EEh.
Wri t e Ca c he — A feature in CacheFlow that posts “command complete” prior to completing the actual write.
2679-771339-A05 RELEASED 8/13/13 49
Page 58
Index EX800M
INDEX
—A—
Acoustics, 15, 16
Active LED Status, 22
Activity indication, 22
Agency Approvals, 16
Airflow, 15
Annualized Failure Rate, 48
Atmospheric Pressure, 15
Automatic Defect Retirement, 28
—B—
Backplane usage, 45
Buffer Size, 4
bytes per sector
host, 4
—C—
Cabling, 11
SATA Interface Cable Diagram, 45
CacheFlow6, 5
Commands
SCT, 31
Cooling
Airflow, 15
forced airflow direction, 15
CSS, 4
Current Requirements, 8, 9
—D—
Data Lifeguard, 27
Data Path Protection (DPP), 24
Data Transfer Rate, 4
Defect Management, 27
Device Plug Connector Pin Definitions, 12
Dimensions, 7
DPP, 24
—E—
EPC, 10
Error Rate, 4, 25
Error Recovery Process, 28
—F—
FDE, 24
Fluid Dynamic Bearings (FDB), 22
Full Disk Encryption (FDE), 24
—G—
Glossary, 48
Grounding (Hard Drive), 7
—H—
Host Interface Commands, 29
Identify Drive, 35
S.M.A.R.T., 31
Set Features, 42
Hot Plug Support, 21
—I—
Input Voltage Requirements, 10
Installation and Setup, 43
Internal Environmental Protection System, 27
—L—
Latency, 4
LED
active status, 22
activity indication, 22
Logical Block Addressing
48-bit, 23
—M—
Maintenance, 46
Manufacturing option block, 24
MicroFemto slider, 20
Model number specification, 16
Motors
StableTrac, 20
Mounting
Orientation, 7
Screw Size Limitations, 7
Mounting (Hard Drive), 7
—N—
Native Command Queuing, 20
—P—
Password Security Mode, 23
Perpendicular magnetic recording (PMR), 19
Power, 11
Power Dissipation, 8, 9, 14
Power management, 9
Power Savings Modes, 9
Pre-emptive Wear Leveling (PWL), 20
PWL, 20
—R—
RAFF, 19
Read Cache, 5
Recording Method, 4
Reliability features set, 21, 27
Ripple, 11
RoHS (Restriction of Hazardous Substances), 15
Rotary Acceleration Feed Forward (RAFF), 19
Rotational Speed, 4
RPM, 4
50 RELEASED 8/13/13 2679-771339-A05
Page 59
EX800M Index
—S—
S.M.A.R.T., 23
S.M.A.R.T. Command Transport (SCT), 21
Sanitize Device, 24
SATA 3 Gb/s interface, 18
SATA Extended Power Conditions, 10
SCT, 21
SCT commands, 31
SCT feature set
temperature reporting, 21
TLER, 18
write same, 21
Security Mode
Passwords, 23
Security Levels, 23
SED, 18, 24
Seek Time, 4
Self Encrypting Drive (SED), 24
Serial ATA Latching Connector, 46
Servo Type, 4
Shock and Vibration, 13
Specifications, 4
Electrical, 8
Environmental, 13
Mechanical, 6
Performance, 4
Physical, 4
Spindle Start Time, 4
StableTrac, 20
Staggered Spinup, 22
—W—
World Wide Name (WWN), 21
Write Cache, 5
WWN, 21
—T—
Technical Support, 47
Online Services, 47
Temperature
Airflow, 15
Reliability operating temperature limit (drive
baseplate thermocouple location), 14
Thermocouple location, 14
Temperature and Humidity, 14
Temperature Measurement, 14
Thermal Management, 27
Thermocouple location, 14
Time-limited error recovery (TLER), 18
TLER, 18
—U—
Unpacking
Container Inspection, 43
Drive Removal - Container, 43
Drive Removal - Static Shielding Bag, 44
Handling Precautions, 43
Moving Precautions, 44
User Sectors per Drive, 4
2679-771339-A05 RELEASED 8/13/13 51
Page 60
Western Digital
3355 Michelson Drive, Suite 100
Irvine, California 92612
U.S.A.
For service and literature:
http://support.wd.com
www.wd.com
800.ASK.4WDC North America
949.832.4778 Latin America (Spanish)
+800.6008.6008 Asia Pacific
00800.ASK.4WDEUEurope (toll free where available)
+31.88.0062100 Europe/Middle East/Africa
2679-771339-A05
Aug 2013
WD CONFIDENTIAL
Loading...