Seagate ST8000AS0022 Product Manual
Archive HDD
v2 SATA Product Manual
ST8000AS0022
100795782, Rev. A
Gen 2 - January 2016
Document Revision History
Revision Date Pages affected and Description of Change
Rev. A 01/26/2016 Initial release.
© 2016 Seagate Technology LLC. All rights reserved.
Publication number: 100795782, Rev. A January 2016
Seagate, Seagate Technology and the Spiral logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. SmartAlign, AcuTrac 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 var y 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.
Contents
Seagate® Technology Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 About the SATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Zone Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.0 Drive Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1.1 LBA mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Default logical geometry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Recording and interface technology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.6 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.7 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.7.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.7.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.7.3 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.7.4 Extended Power Conditions - PowerChoiceTM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.8 Environmental specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.8.1 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.8.2 Temperature gradient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.8.3 Humidity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.8.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.8.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.8.6 Operating vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.8.7 Non-operating vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.9 Acoustics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.9.1 Test for Prominent Discrete Tones (PDTs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.10 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.11 Reliability - Mean Time Between Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.12 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.12.1 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.13 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.13.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.13.2 Electromagnetic compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.13.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.14 Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.14.1 European Union Restriction of Hazardous Substances (RoHS) Directive. . . . . . . . . . . . . . 19
2.14.2 China Restriction of Hazardous Substances (RoHS) Directive . . . . . . . . . . . . . . . . . . . . . . . 19
2.15 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.0 Configuring and Mounting the Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.1 Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2 Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3 SATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.0 SATA Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.1 Hot-Plug compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2 SATA device plug connector pin definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.3 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3.1 ZAC Supported Capabilities log page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3.2 Identify Device command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.3.3 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.3.4 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Seagate Archive HDD Product Manual, Rev. A 2
Figures
Figure 1 Typical 5V & 12V - 6Gb/s startup and operation current profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 2 Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 3 Mounting dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Seagate Archive HDD Product Manual, Rev. A 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/seagate-recovery-
services/recover/
For Seagate OEM, Distribution partner and reseller portals, visit: http://www.seagate.com/partners/
Seagate Archive HDD Product Manual, Rev. A 4
1.0 Introduction
This manual describes the functional, mechanical and interface specifications for the following Seagate® Archive HDD
model drives:
Standard model
ST8000AS0022
Note
These drives provide the following key features:
• Host aware, optimized for SMR performance and capable of ZAC command support
• High instantaneous (burst) data-transfer rates (up to 600MB per second).
• Streaming video optimization - consistent command completion times & ERC support
• Idle3 power mode support
• TGMR recording technology provides the drives with increased areal density.
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Native Command Queuing with command ordering to increase performance in demanding applications.
• Full-track multiple-sector transfer capability without local processor intervention.
• Seagate AcuTrac™ servo technology delivers dependable performance, even with hard drive track widths of only 75
nanometers.
• Seagate SmartAlign™ technology provides a simple, transparent migration to Advanced Format 4K sectors
•Quiet operation.
• Compliant with RoHS requirements in China and Europe.
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• Support for S.M.A.R.T. drive monitoring and reporting.
• Supports latching SATA cables and connectors.
• Worldwide Name (WWN) capability uniquely identifies the drive.
Previous generations of Seagate Self-Encrypting Drive models were called Full Disk Encryption (FDE) models
before a differentiation between drive-based encryption and other forms of encryption was necessary.
1.1 About 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 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.
Seagate Archive HDD Product Manual, Rev. A 5
www.seagate.com Introduction
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 3.2”. The specification can be
downloaded from www.sata-io.or
The host adapter may, optionally, emulate a master/slave environment to host software where two
Note
devices 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.
g.
1.2 Zone Structure
Archive HDD models use SMR (Shingled Magnetic Recording Technology), physically formatted containing two types of
zones. 64 “Conventional Zones” which are not associated with write pointer, and the media is non-SMR and 29808
Sequential Write preferred Zones which are SMR media. For the sequential write referred zones there is a write pointer to
indicated preferred write location. For the conventional zone writes can occur randomly for any block size. New
commands which report zonal structure, resetting zonal write pointers, as well as managing zonal properties are available
for sequential write preferred zones through ZAC commands.
Archive HDD Conventional Zone Structure
• There are 64 256 MiB Conventional Zones. (ie. Not Shingled)
• The conventional zone is located at the outer diameter and is 16GB.
• Sequential Read and Writes to this zones will perform at similar data rates.
• Random Write commands can be issued in any order without any performance delay.
• Zone designed specifically for random writes data. For example: logs and meta data.
There are 29808 Sequential Write Zones
• Each zone is 2e19 logical blocks in size or 256 MiB each.
• Each zone is a shingled zone.
• To achieve best performance use of ZAC commands is required.
• Re-setting write pointers for each zone is required before reuse.
Optimal number of open sequential write preferred zones
• Advised - the largest number of zones that should be open for best performance, is reported in Identify Device Data
log 0x30 page 0x00h
Optimal number of non-sequentially written sequential write preferred zones
• Advised - the largest number of write preferred zones that should be randomly written for best performance, is
reported in identify device data log 0x30 page 0x00h
T-13 standards define the new ZAC commands; REPORT ZONES EXT to query the drive on what zones exist and their
current condition, RESET WRITE POINTER EXT to reset the write pointers, OPEN ZONE EXT, CLOSE ZONE EXT, and FINISH
ZONE EXT to Open, Close, and Finish zones. To achieve optimal performance, an SMR-aware Host driver will need to write
sequentially to all sequential write referred zones.
See the T13 Web Site at http://www.t13.or
g for ACS-4, T13/BSR INCIT 529 for command details.
Seagate Archive HDD Product Manual, Rev. A 6
2.0 Drive 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 model
ST8000AS0022
Specification summary tables
The specifications listed in
the appropriate section of this manual.
Table 1 Drive specifications summary
Drive Specification* ST8000AS0022
Formatted capacity (512 bytes/sector)** 8000GB (8TB)
Guaranteed sectors 15,628,053,168
Heads 12
Disks 6
Bytes per sector 512
Recording density (max) 1950 KFCI
Track density (avg) 435 KTPI
Areal density (avg) 848 Gb/in
Internal data transfer rate (max) 1900 Mb/s
Maximum sustained data rate, OD read
(MB/s)
ATA data-transfer modes supported
I/O data-transfer rate (max) 600MB/s
Cache buffer 128MB
Height (max) 26.1mm / 1.028 in
Width (max) 101.6mm/4.0 in (+
Length (max) 146.99mm / 5.787 in
Weight (typical) 780g / 1.72 lb
Average latency 5.5ms
Power-on to ready (max) 30.0s
Standby to ready (max) 25.0s
Average seek, read (typical)
Average seek, write (typical)
Startup current (typical) 12V 2.0A
Voltage tolerance (including noise)
Non-Operating (Ambient °C) –40 to 70
Operating temperature (drive case min °C) 0
Operating temperature (drive case max °C) 60
Temperature gradient
Relative humidity
Relative humidity gradient (max) 30% per hour
Wet bulb temperature (max)
Altitude, operating
Table 1 are for quick reference. For details on specification measurement or definition, refer to
2
190 MB/s
PIO modes: 0 to 4
Multiword DMA modes: 0 to 2
Ultra DMA modes 0 to 6
0.010 in)
<12.0ms
<12.0ms
5V ±5%
12V ±10%
20°C per hour max (operating)
30°C per hour max (nonoperating)
5% to 90% (operating)
5% to 95% (nonoperating)
26°C max (operating)
29°C max (nonoperating)
–61m to 3048m
(–200 ft to 10,000 ft)
Seagate Archive HDD Product Manual, Rev. A 7
www.seagate.com Drive Specifications
Table 1 Drive specifications summary
Drive Specification* ST8000AS0022
Altitude, non-operating
(below mean sea level, max)
Operational shock (max) 70 Gs (read) and 40 Gs (write) at 2ms
Non-operational shock (max) 250 Gs at 2ms
Vibration, operating
Vibration, non-operating 5Hz to 500Hz: 3.0 Gs
Drive acoustics, sound power
Idle***
Seek
Non-recoverable read errors 1 per 10
Average rate of <180TB/year. The AFR specification for the drive assumes the I/O workload does not
Rated workload
Warr anty
Load/unload cycles (25°C, 50% rel. humidity) 300,000 at 25°C, 50% rel. humidity
Supports hotplug operation per the
Serial ATA Revision 3.2 specification
exceed the average annualized workload rate limit of 180TB/year. Workloads exceeding the
annualized rate may degrade the drive AFR and impact product reliability. The average annualized
workload rate limit is in units of TB per year, or TB per 8760 power-on hours. Workload rate limit = TB
transferred × (8760/recorded power-on hours).
To determine the warranty for a specific drive, use a web browser to access the following web page:
http://www.sea
From this page, click on “Is my Drive under Warranty”. 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.
gate.com/support/warranty-and-replacements/
2Hz to 22Hz: 0.25 Gs, Limited displacement
–61m to 12,192m
(–200ft to 40,000+ ft)
22Hz to 350Hz: 0.50 Gs
350Hz to 500Hz: 0.25 Gs
2.7 bels (typical)
2.8 bels (max)
2.8 bels (typical)
2.9 bels (max)
^
15 bits read
Yes
*All specifications above are based on native configurations.
** 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.
Seagate Archive HDD Product Manual, Rev. A 8
www.seagate.com Drive Specifications
2.1 Formatted capacity
Model Formatted capacity* Guaranteed sectors Bytes per sector
ST8000AS0022 8000GB 15,628,053,168 512
*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.
2.1.1 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 4.3.2, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-bit
addressing support of drives with capacities over 137GB.
2.2 Default 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.
2.3 Recording and interface technology
Interface
Recording method TGMR
Recording density (KFCI) 1950
Track density (Ktracks/inch avg) 435
Areal density (Gb/in
2
)848
Internal data transfer rate (Mb/s max) 1900
Maximum sustained data transfer rate, OD read (MB/s) 190
I/O data-transfer rate (MB/s max) 600
SATA
Seagate Archive HDD Product Manual, Rev. A 9
www.seagate.com Drive Specifications
2.4 Physical characteristics
Maximum height 26.11mm / 1.028 in
Maximum width 101.6mm / 4.0 in (± 0.010 in)
Maximum length 146.99mm / 5.787 in
Typical weight 780g / 1.72 lb
Cache buffer 128MB
2.5 Seek 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-track 1.0 1.2
Average <12.0
Average latency 5.5
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.
2.6 Start/stop times
The start/stop times are listed below.
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.
30 (max)
30 (max)
12 (max)
Seagate Archive HDD Product Manual, Rev. A 10
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