7 & 10: Revised Seek times to <12.0 ms
11: Power Dissipation = 3-Disks
17-18: Updated Section 2.13.1 Seagate Rescue Data Recovery Service Program Terms
Seagate, Seagate Technology and the Spiral logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Rescue and SeaTools are either trademarks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/or other countries. All other trademarks or registered trademarks
are the property of their respective owners.
No part of this publication may be reproduced in any form without written permission of Seagate Technology LLC.
Call 877-PUB-TEK1 (877-782-8351) to request permission.
When referring to drive capacity, one gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes. Your computer’s operating system may use a different
standard of measurement and report a lower capacity. In addition, some of the listed capacity is used for formatting and other functions, and thus will not be available for data storage.
Actual quantities will vary based on various factors, including file size, file format, features and application software. Actual data rates may vary depending on operating environment
and other factors. The export or re-export of hardware or software containing encryption may be regulated by the U.S. Department of Commerce, Bureau of Industry and Security (for
more information, visit www.bis.doc.gov), and controlled for import and use outside of the U.S. Seagate reserves the right to change, without notice, product offerings or specifications.
Seagate NAS HDD and NAS +SRS HDD Product Manual, Rev. D 3
Seagate® Technology Support Services
For information regarding online support and services, visit: http://www.seagate.com/contacts/
For information regarding Warranty Support, visit: http://www.seagate.com/support/warranty-and-replacements/
For information regarding data recovery services, visit: http://www.seagate.com/services-software/data-recovery-services/
For Seagate OEM, Distribution partner and reseller portals, visit: http://www.seagate.com/partners/
Seagate NAS HDD and NAS +SRS HDD Product Manual, Rev. D 4
1.0Introduction
This manual describes the functional, mechanical and interface specifications for the following:
Seagate NAS HDD +SRS model drives:
Standard models+Rescue model
ST4000VX000ST3000VX002ST4000VX002
These drives provide the following key features:
• 1M hour MTBF - designed for high write duty cycle across Surveillance HDD
• ATA AV Command support - streaming video command support across Surveillance HDD
• Best-in-class acoustic performance means virtually silent operation
• Built-in error recovery for non-stop video streaming
• Compliant with RoHS requirements in China and Europe
• Full-track multiple-sector transfer capability without local processor intervention
• Idle3 power mode support
• Low activity power
• Low-RPM spindle speed
• Native Command Queuing with command ordering to increase performance in demanding applications
• Performance-tuned for seamless video applications
• Reliability for 24×7 video surveillance applications
• Rotational Vibration - mitigation of system level rotational vibration inside Surveillance HDD
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• State-of-the-art cache and on-the-fly error-correction algorithms
• Streaming video optimization - consistent command completion times & ERC support across Surveillance HDD
• Support for S.M.A.R.T. drive monitoring and reporting
• Supports "8+" drive bays
• Supports ATA8 streaming commands
• Supports latching SATA cables and connectors
• Supports up to 64 cameras
• TGMR recording technology provides the drives with increased areal density.
• Thermal monitoring and reporting for 24×7 operations
• Transient power on management - <=1.8A spin-up current
• Uncompromising reliability supports flexible surveillance design with case temperatures up to 70ºC
• Workload ratings of 180TB/year
• Worldwide Name (WWN) capability uniquely identifies the drive
Seagate NAS HDD and NAS +SRS HDD Product Manual, Rev. D 5
Introduction
1.1About the SATA interface
The Serial ATA (SATA) interface provides several advantages over the traditional (parallel) ATA interface. The primary
advantages include:
• Easy installation and configuration with true plug-and-play connectivity. It is not necessary to set any jumpers or other
configuration options.
• Thinner and more flexible cabling for improved enclosure airflow and ease of installation.
• Scalability to higher performance levels.
In addition, SATA makes the transition from parallel ATA easy by providing legacy software support. SATA was designed to
allow users to install a SATA host adapter and SATA disk drive in the current system and expect all of the existing
applications to work as normal.
The SATA interface connects each disk drive in a point-to-point configuration with the SATA host adapter. There is no
master/slave relationship with SATA devices like there is with parallel ATA. If two drives are attached on one SATA host
adapter, the host operating system views the two devices as if they were both “masters” on two separate ports. This
essentially means both drives behave as if they are Device 0 (master) devices.
The host adapter may, optionally, emulate a master/slave environment to host software where two devices
Note
The SATA host adapter and drive share the function of emulating parallel ATA device behavior to provide backward
compatibility with existing host systems and software. The Command and Control Block registers, PIO and DMA data
transfers, resets, and interrupts are all emulated.
The SATA host adapter contains a set of registers that shadow the contents of the traditional device registers, referred to as
the Shadow Register Block. All SATA devices behave like Device 0 devices. For additional information about how SATA
emulates parallel ATA, refer to the “Serial ATA International Organization: Serial ATA Revision 3.0.” The specification can be
downloaded from www.sata-io.org
on separate SATA ports are represented to host software as a Device 0 (master) and Device 1 (slave)
accessed at the same set of host bus addresses. A host adapter that emulates a master/slave environment
manages two sets of shadow registers. This is not a typical SATA environment.
.
Seagate NAS HDD and NAS +SRS HDD Product Manual, Rev. D 6
2.0Drive Specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For
convenience, the phrases the drive and this drive are used throughout this manual to indicate the following drive models:
Standard models+Rescue model
ST4000VX000ST3000VX002ST4000VX002
2.1Specification summary tables
The specifications listed in Table 1 are for quick reference. For details on specification measurement or definition, refer to
the appropriate section of this manual.
Table 1Drive specifications summary for NAS HDD +SRS models
Drive SpecificationST4000VX000 and ST4000VX002ST3000VX002
Formatted capacity
(512 bytes/sector)*
Guaranteed sectors7,814,037,1685,860,533,168
Heads6
Disks3
Bytes per sector (4K physical
emulated at 512-byte sectors)
Default sectors per track63
Default read/write heads16
Default cylinders16,383
Recording density (max)2054kFCI1849kFCI
Track density (avg)390 ktracks/in
Areal density (avg)811Gb/in
Internal data transfer rate (max)2111Mb/s 1858Mb/s
Maximum sustained data rate,
OD read (MB/s)
I/O data-transfer rate (max)600MB/s
Cache buffer64MB
Height (max)26.1mm / 1.028 in
Width (max)101.85mm /4.010 in
Length (max)146.99mm / 5.787 in
Weight (typical)635g /1.40 lb
Average latency5.1ms
Power-on to ready (max)<17.0s
Standby to ready (max)<17.0s
Average seek, read (typical)
Average seek, write (typical)
Startup current (typical) 12V (peak)<=1.8A
Voltage tolerance (including noise)
Ambient temperature
(drive case temperature)
Temperature gradient
4000GB
(4TB)
4096
2
190MB/s
<12.0 ms typical
<12.0 ms typical
5V: ±5%
12V: ±10%
0° to 70°C (operating)
–40° to 70°C (non-operating)
20°C per hour max (operating)
30°C per hour max (non operating)
3000GB
(3TB)
730Gb/in
2
Seagate NAS HDD and NAS +SRS HDD Product Manual, Rev. D 7
Drive Specifications
Table 1Drive specifications summary for NAS HDD +SRS models (continued)
Drive SpecificationST4000VX000 and ST4000VX002ST3000VX002
Relative humidity
5% to 90% (operating)
5% to 95% (non-operating)
Relative humidity gradient (max)30% per hour
Wet bulb temperature (max)
Altitude, operating
Altitude, non-operating
(below mean sea level, max)
37.7°C max (operating)
40.0°C max (non-operating)
–304.8m to 3048m
(–1000 ft to 10,000+ ft)
–304.8m to 12,192m
(–1000 ft to 40,000+ ft)
Operational Shock (max)80 Gs at 2ms
Non-Operational Shock (max)300 Gs at 2ms
2Hz to 22Hz: 0.25 Gs (Limited displacement)
Vibration, operating
22Hz to 350Hz: 0.50 Gs
350Hz to 500Hz: 0.25 Gs
Vibration, non-operating
22Hz to 350Hz: 3.0 Gs
350Hz to 500Hz: 3.0 Gs
Drive acoustics, sound power
5Hz to 22Hz: 3.0 Gs
Idle**
Seek
Non-recoverable read errors1 per 10
2.3 bels (typical)
2.5 bels (max)
2.4 bels (typical)
2.5 bels (max)
14
bits read
Mean Time Between Failure (MTBF)1,000,000 hrs
Average annualized workload rating: <180 TB/year.
The AFR specification for the product assumes the I/O workload does not exceed
Rated Workload
the average annualized workload rate limit of 180 TB/year. Workloads exceeding
the annualized rate may degrade the product AFR and impact reliability as
experienced by the particular application. The average annualized workload rate
limit is in units of TB per calendar year.
To determine the warranty for a specific drive, use a web browser to access the
following web page:
From this page, click on the “Is my Drive under Warranty” link. Users will be asked to
provide the drive serial number, model number (or part number) and country of
purchase. The system will display the warranty information for the drive.
Supports Hotplug operation per the
Serial ATA Revision 3.0 specification
Ye s
*One GB equals one billion bytes and 1TB equals one trillion bytes when referring to hard drive capacity. Accessible capacity may vary depending
on operating environment and formatting.
**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.
*** All specifications above are based on native configurations.
Seagate NAS HDD and NAS +SRS HDD Product Manual, Rev. D 8
Drive Specifications
2.2Formatted capacity
ModelFormatted capacity*Guaranteed sectors Bytes per sector
ST4000VX000 and ST4000VX0024000GB7,814,037,168
4K
ST3000VX0023000GB5,860,533,168
*One GB equals one billion bytes and 1TB equals one trillion bytes when referring to hard drive capacity. Accessible capacity may vary depending on
operating environment and formatting.
2.2.1 LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1, where n is the
number of guaranteed sectors as defined above.
See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-bit
addressing support of drives with capacities over 137GB.
2.3Default logical geometry
• Cylinders: 16,383
• Read/write heads: 16
• Sectors per track: 63
LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1, where n is the
number of guaranteed sectors as defined above.
2.4Recording and interface technology
InterfaceSATA
Recording methodTGMR
Recording density (kFCI)
4TB2054
3TB1849
Track density (ktracks/inch avg)390
Areal density (Gb/in
Internal data transfer rate (Mb/s max)
2
avg)
4TB811
3TB730
4TB2111
3TB1858
Maximum sustained data transfer rate, OD read (MB/s)190
I/O data-transfer rate (MB/s max)600
Seagate NAS HDD and NAS +SRS HDD Product Manual, Rev. D 9
Drive Specifications
2.5Manufacturer Physical characteristics
Maximum height26.11mm / 1.028 in
Maximum width101.85mm / 4.010 in
Maximum length146.99mm / 5.787 in
Typical weight635g / 1.40 lb
Cache buffer64MB (64,768kb)
2.6Seek time
Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive
diagnostics. The specifications in the table below are defined as follows:
• Track-to-track seek time is an average of all possible single-track seeks in both directions.
• Average seek time is a true statistical random average of at least 5000 measurements of seeks between random tracks,
less overhead.
Typical seek times (ms)Read Write
Track-to-track1.01.2
Average<12.0<12.0
Average latency5.1
These drives are designed to consistently meet the seek times represented in this manual. Physical seeks, regardless
Note
of mode (such as track-to-track and average), are expected to meet the noted values. However, due to the manner in
which these drives are formatted, benchmark tests that include command overhead or measure logical seeks may
produce results that vary from these specifications.
2.7Start/stop times
Power-on to ready (in seconds)
Standby to ready (in seconds)
Ready to spindle stop (in seconds)
Time-to-ready may be longer than normal if the drive power is removed without going through normal OS powerdown
procedures.
13 (typical)
17 (max)
13 (typical)
17 (max)
10 (typical)
11 (max)
Seagate NAS HDD and NAS +SRS HDD Product Manual, Rev. D 10
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