Seagate BARRACUDA COMPUTE ST4000DMZ04 User manual

User Manual of Product 1:
Seagate BarraCuda 4TB Internal Hard Drive HDD – 3.5 Inch
Sata 6 Gb/s 5400 RPM 256MB Cache For Computer Desktop
PC – Frustration Free Packaging ST4000DMZ04/DM004

100804767, Rev. J
September 2020
SATA 2.5" Product Manual
Standard models
ST5000LM000-2U8170
ST4000LM024-2U817V

© 2020 Seagate Technology LLC. All rights reserved.
Publication number: 100804767, Rev. J September 2020
Seagate, Seagate Technology, BarraCuda and the Spiral logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. MTC Technology 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.
Document Revision History
a
Revision Date Pages affected and Description of change
Rev. A 07/19/2016 Initial release.
Rev. B 09/06/2016
6 & 8: Changed Weight (typical) to Weight (max)
13: Removed '2004/108/EC (Until 19th April, 2016) and' & '(From 20th April, 2016)'
13: Modified EMC Standard from EN55022 to EN55032
13: Added Korean text for Class B device warning
Rev. C 10/10/2016
fc: Applied BarraCuda logo and Added model numbers
10: Added bullets to Section 2.8.1 Power consumption
10: Updated Table 4 DC Power Requirements
13: Updated to MSIP Korean text for Class B device warning
Rev. D 11/17/2016
5: Revised bullet list
6 & 8: Revised Data transfer rate = 140MB/s
6 & 10: Start-up current = 1.2A
10: Updated Section 2.8.1
11: Added Section 2.8.4
Rev. E 02/21/2017
7: Added Power-off/Flush Command note after Table 1
7 & 14: Revised Rated Workload statements
14: Added Section 2.12.1 Data loss under power interruption with write cache enabled
Rev. F 09/28/2017 16-19: Updated Safety, EMC, FCC & RoHS Sections 2.13 through 2.14.3, per Compliance Council
Rev. G 07/30/2018 19: Updated Table 9: Taiwan - Restricted Substances
21: Revised Figure 2: Mounting Dimensions (for 1-disk models
Rev. H 01/18/2019 27: Updated: Table 12 Identify Device command - Words 84, 85 & 87.
Rev. J 09/30/2020
fc, 6-8, & 22-24: Added Product Model Numbers to ST models
fc, 6-10, & 22-24: Removed 3TB Model Number & references.
5: Updated Seagate Technical Support Services page
11: Updated Table 4 DC power requirements
13: Updated Op & Non-Op Vibration values in Section 2.9.2 Vibration
14: Updated Table 6 Drive A-weighted Sound Power Levels (SWL, BA)
14: Updated Radiated RF immunity in Table 7 Radio Frequency Environments
15: Replaced Regulatory Compliance and Safety information with URL and instructions
15: Added Regulatory model number
17: Revised Figure 2 title to: Mounting Dimensions
bc: Updated US-HQ address & removed others

Seagate BarraCuda Product Manual, Rev. J 2
Contents
Seagate® Technology Support Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 About the Serial ATA Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Specification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.2 Formatted Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.2.1 LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.3 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.4 Recording and Interface Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.5 Physical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.6 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.7 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.8 Power Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.8.1 Power consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.8.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.8.3 Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.8.4 Power-management modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.9 Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.9.1 Shock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.9.2 Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.10 Acoustics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.10.1 Test for prominent discrete tones (PDTs). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.11 Electromagnetic Immunity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.12 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.12.1 Data loss under power interruption with write cache enabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.13 HDD and SSD Regulatory Compliance and Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.13.1 Regulatory models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.14 Corrosive Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Seagate BarraCuda Product Manual, Rev. J 3
Contents
3. Unpacking, Configuring and Mounting the Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.1 Handling and Static-Discharge Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.2 Configuring the Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.2.1 Serial ATA Cables and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.3 Drive Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4. Serial ATA (SATA) Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1 Hot-Plug Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.2 Serial ATA Device Plug Connector Pin Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.3 Supported ATA Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.3.1 Identify Device command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.3.2 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
4.3.3 S.M.A.R.T. commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Seagate BarraCuda Product Manual, Rev. J 4
Figures
Figure 1. Attaching SATA Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 2. Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Seagate BarraCuda Product Manual, Rev. J 5
For Seagate Product Support, visit: https://www.seagate.com/support
For Seagate Compliance, Safety, and Disposal, visit: https://www.seagate.com/support
For Firmware Download and Tools Download for Secure Erase, visit: https://www.seagate.com/support/downloads/
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/recover/resources/
For Seagate OEM and Distribution partner and Seagate reseller portal, visit: http://www.seagate.com/partners
Seagate® Technology Support Services

Seagate BarraCuda Product Manual, Rev. J 6
1. Introduction
This manual describes the functional, mechanical and interface specifications for the following: Seagate® BarraCuda® model drives:
These drives provide the following key features:
•128MB buffer.
•5400-RPM spindle speed.
•650 Gs non-operating shock and 300 Gs of operating shock.
•Full-track multiple-sector transfer capability without local processor intervention.
•High instantaneous (burst) data-transfer rates (up to 6Gb/s).
•MTC TechnologyTM, proprietary data flow management.
•Native Command Queuing (NCQ) with command ordering.
•Quiet operation with Fluid Dynamic Bearing (FDB) motor.
•SeaToolsTM diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
•Shingled magnetic recording with perpendicular magnetic recording heads/media.
•State-of-the-art cache and on-the-fly error-correction algorithms.
•Support for Read Multiple and Write Multiple commands.
•Support for S.M.A.R.T. drive monitoring and reporting.
•Worldwide Name (WWN) capability uniquely identifies the drive.
1.1 About the Serial ATA Interface
The Serial ATA 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, Serial ATA makes the transition from parallel ATA easy by providing legacy software support. Serial ATA was designed to allow users to
install a Serial ATA host adapter and Serial ATA disk drive in the current system and expect all of the existing applications to work as normal.
The Serial ATA interface connects each disk drive in a point-to-point configuration with the Serial ATA host adapter. There is no master/slave
relationship with Serial ATA devices like there is with parallel ATA. If two drives are attached on one Serial ATA 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 Serial ATA 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 Serial ATA host adapter contains a set of registers that shadow the contents of the traditional device registers, referred to as the Shadow
Register Block. All Serial ATA devices behave like Device 0 devices. For additional information about how Serial ATA emulates parallel ATA, refer to
the Serial ATA International Organization: Serial ATA (Revision 2.6). The specification can be downloaded from www.serialata.org.
Standard models
ST5000LM000-
2U8170
ST4000LM024-
2U817V
Note
The host adapter may, optionally, emulate a master/slave environment to host software where two
devices on separate Serial ATA 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 Serial ATA environment.

Seagate BarraCuda Product Manual, Rev. J 7
2. 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:
The specification summaries listed in the following tables are for quick reference. For details on specification measurement or definition, refer to the
appropriate section of this manual.
2.1 Specification Summary
Table 1 Drive Specifications Summary
Drive Specification ST5000LM000-2U8170 ST4000LM024-2U817V
Formatted capacity 15000GB 4000GB
Guaranteed sectors 9,767,541,168 7,814,037,168
Heads 10 10 / 8
Disks 55 / 4
Bytes per sector 512 (logical) / 4096 (physical)
Recording density 2254 Kb/in
Track density 580 Ktracks/in avg
Areal density 1307 Gb/in2 avg
Spindle speed 5400 RPM
Data transfer rate (up to) 140 MB/s
Interface SATA 6Gb/s
ATA data-transfer modes supported
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Cache buffer 128 MB
Height 15.0 +0.5/- 0.25 mm (0.59 +0.002/-0.010 in)
Width 69.85 +/- 0.25 mm (2.750 +/- 0.010 in)
Length 100.35 +0.20 / -0.25 mm (3.951 +0.008 / -0.010 in)
Weight (max) 190 g (0.42lb)
Average latency 5.6 ms
Startup current, Max (+5V) 1.2A
Voltage tolerance (including noise) 5V ± 5%
Operating temperature 0° to 60°C
Non-operating temperature (Ambient) –40° to 70°C
Temperature gradient (max) 20°C per hour max (operating)
35°C per hour max (non-operating)

Seagate BarraCuda Product Manual, Rev. J 8
2.2 Formatted Capacity
Relative humidity 5% to 95% (operating)
5% to 95% (non-operating)
Relative humidity gradient 20°C per hour max (operating)
30°C per hour max (non-operating)
Wet bulb temperature (max) 37.7°C max (operating)
40.0°C max (non-operating)
Altitude, operating –304.8 m to 3048 m (–1000 ft to 10,000+ ft)
Altitude, non-operating
(below mean sea level, max) –304.8 m to 12,192 m (–1000 ft to 40,000+ ft)
Operational Shock 300 Gs at 2 ms max
Non-Operational Shock 650 Gs at 1 ms max
Vibration, operating 10–500 Hz: 0.7 Grms
Vibration, non-operating 5–500 Hz: 2.2 Grms
Nonrecoverable read errors 1 per 1014 bits read
Rated workload
Average annualized workload rating: <55 TB/year.
The specifications for the product assumes the I/O workload does not exceed the average annualized
workload rate limit of 55 TB/year. Workloads exceeding the annualized rate may degrade and impact
reliability as experienced by the particular application. The average annualized workload rate limit is
in units of TB per calendar year.
Warranty
To determine the warranty for a specific drive, use a web browser to access the following web page:
http://www.seagate.com/support/warranty-and-replacements/.
From this page, click on the “Is my Drive under Warranty” link. The following are required to be pro-
vided: the drive serial number, model number (or part number) and country of purchase. The system
will display the warranty information for the drive.
Load-unload cycles 600,000 at 25°C, 50% rel. humidity
Supports Hotplug operation per the
Serial ATA Revision 3.2 specification Yes
1. One GB equals one billion bytes when referring to hard drive capacity.
Accessible capacity may vary depending on operating environment and formatting.
Note If the drive is powered-off before issuing flush cache command, in some instances,
the end user data in the DRAM cache might not be committed to the disk.
Model Formatted Capacity1
1. One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on
operating environment and formatting.
Guaranteed Sectors Bytes per Sector
5TB models 5000 GB 9,767,541,168
512 (logical) / 4096 (physical)
4TB models 4000 GB 7,814,037,168
Table 1 Drive Specifications Summary (continued)
Drive Specification ST5000LM000-2U8170 ST4000LM024-2U817V

Seagate BarraCuda Product Manual, Rev. J 9
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.
Refer to Unpacking, Configuring and Mounting the Drive on page 16 (words 60-61 and 100-103) for additional information about 48-bit
addressing support of drives with capacities over 137 GB.
2.3 Physical organization
2.4 Recording and Interface Technology
2.5 Physical Characteristics
Drive model Read/write heads Number of discs
5TB models 10 5
4TB models 10 / 8 5 / 4
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density 2254 Kb/in
Track density 580 Ktracks/in avg
Areal density 1307 Gb/in2 avg
Spindle speed 5400 RPM
Data transfer rate (up to) 140 MB/s
Interface SATA 6Gb/s
All models
Height 15.0 +0.5/- 0.25 mm (0.59 +0.008/-0.010 in)
Width 69.85 +/- 0.25 mm (2.750 +/- 0.010 in)
Length 100.35 +0.20 / -0.25 mm (3.951 +0.008 / -0.010 in)
Weight (max) 190 g (0.42lb)
Cache buffer 128 MB (129,536 KB)

Seagate BarraCuda Product Manual, Rev. J 10
2.6 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:
• Average seek time is determined by averaging the time to complete 1,000 seeks of random length.
• Average latency is the time required for the drive to rotate 1/2 of a revolution and on average is
incurred after a seek completion prior to reading or writing user data.
• Startup time is the time elapsed between the supply voltages reaching operating range and the
drive being ready to accept all commands.
• Actual rotational speed can be different a little.
• Performance specification is limited to the room temperature & normal voltage condition.
2.7 Start/stop times
Table 2: Typical seek times
Typical seek times (ms) Read/Write
Average 14.0/14.0
Average latency 5.6
Note
Seek time is defined as the time from the receipt of a read, write or seek command
until the actuator has repositioned and settled on the desired track with the drive
operating at nominal DC input voltages and nominal operating temperature.
Table 3: Start/stop times
Capacity 5TB and 4TB models
Typical seek times (ms) Typical
Power-on to ready (sec) 7.5
Standby to ready (sec) 6.5

Seagate BarraCuda Product Manual, Rev. J 11
2.8 Power Specifications
The drive receives DC power (+5V) through a native SATA power connector (refer to1).
2.8.1 Power consumption
Power requirements for the drives are listed in the table in Table 4. Typical power measurements are based on an average of drives tested, under
nominal conditions, at 25°C ambient temperature. These power measurements are done with DIPM enabled.
• Spinup current is measured from the time of power-on to the time that the drive spindle reaches operating speed.
• Read/Write current is measured with the heads on track, based on three 64 sector read or write operations every 100 ms.
• The drive supports two idle modes: Active Idle mode and Low Power Idle mode. Refer to Section 2.8.4 for power-management modes.
2.8.2 Conducted noise
Input noise ripple is measured at the host system power supply across an equivalent 15-ohm resistive load on the +5 volt line.
•Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave injected noise at up to 20 MHz.
2.8.3 Supply Voltage
Table 4: DC Power Requirements
Power Dissipation All models
+5V input average (25° C)
Spinup (max) 1.2A
Write average 2.40W
Read average 2.40W
Idle, low power mode 1.45W
Standby1
1. Standby power is measured at steady state (after 200ms from transition)
0.18W
Sleep 0.18W
Note Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.
Allowable voltage 5V ± 5%
Allowable noise/ripple 100 mV p-p max, 0-30 MHz
Allowable supply rise time 1-100 ms
Allowable supply fall time <5 s

Seagate BarraCuda Product Manual, Rev. J 12
2.8.4 Power-management modes
The drive provides programmable power management to provide greater energy efficiency. In most systems, users can control power management
through the system setup program. The drive features the following power-management modes:
•Activemode
The drive is in Active mode during the read/write and seek operations.
•Idlemode
The electronics remain powered, and the drive accepts all commands and returns to Active mode when disk access is necessary.
•Standbymode
The drive enters Standby mode immediately when the host sends a Standby Immediate command. If the host has set the standby
timer, the drive enters Standby mode automatically after the drive has been inactive for a specifiable length of time. The standby
timer delay is established using a Standby or Idle command. In Standby mode, the electronics are in low power mode, the heads are
parked and the spindle is at rest. The drive accepts all commands and returns to Active mode when disk access is necessary.
• Sleep mode
The drive enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the electronics are in low power mode,
the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it receives a Hard Reset or Soft Reset from the host.
After receiving a reset, the drive exits Sleep mode and enters Standby mode.
Power modes Heads Spindle Electronics
Active Tracking Rotating Full Power
Idle, Active Floating Rotating Partial Power
Idle, Low Power Parked Rotating Partial Power
Standby Parked Stopped Low Power
Sleep Parked Stopped Low Power

Seagate BarraCuda Product Manual, Rev. J 13
2.9 Environmental Specifications
This section provides the temperature, humidity, shock, and vibration specifications for Seagate BarraCuda drives.
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Above 1000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet.
2.9.1 Shock
All shock specifications assume that the drive is mounted securely with the input shock applied at the drive mounting screws. Shock may be applied
in the X, Y, or Z axis.
2.9.1.1 Operating shock
These drives comply with the performance levels specified in this document when subjected to a maximum operating shock of 300 Gs based on
half-sine shock pulses of 2 ms. Shocks should not be repeated more than one time per axis.
Shocks should not be repeated more than one time per axis. There must be a minimum delay of 3 seconds between pulses.
2.9.1.2 Non-operating shock
The non-operating shock level that the drive can experience without incurring physical damage or degradation in performance when subsequently
put into operation is 650 Gs based on a non-repetitive half-sine shock pulse of 1 ms duration.
2.9.2 Vibration
All vibration specifications assume that the drive is mounted securely with the input vibration applied at the drive mounting screws. Vibration may
be applied in the X, Y, or Z axis.
2.9.2.1 Operating vibration
The maximum vibration levels that the drive may experience while meeting the performance standards specified in this document are specified
below.
2.9.2.2 Non-operating vibration
The maximum non-operating vibration levels that the drive may experience without incurring physical damage or degradation in performance
when subsequently put into operation are specified below.
Table 5: Environmental specifications
Parameters Operating Non-Operating
Ambient temperature 0° to 60°C (32° to 140°F) -40° to 70°C (-40° to 158°F)
Temperature gradient 20°C per hour (68°F per hour) max, without condensation 35°C per hour (95°F per hour) max, without condensation
Humidity 5% to 95% non-condensing (30% per hour) 5% to 95% non-condensing (30% per hour)
Wet bulb 37.7°C (99.8°F) max 40°C (104°F) max
Altitude -304.8m to 3048m
(-1000ft to 10,000ft)
-304.8m to 12,192m
(-1000ft to 40,000ft)
Note
The recommended storage period:
• 1 year under controlled conditions of 34°C 90%RH or less
• 90 days in uncontrolled storage conditions
10-500 Hz, Sequential 0.7 Grms
5-500 Hz, Random 2.2 Grms

Seagate BarraCuda Product Manual, Rev. J 14
2.10 Acoustics
Drive emission of sound is measured consistent with the ECMA-74 and its referenced standards. Testing is conducted at room temperature
(approximately 25°C). Emission levels are reported as the total A-weighted sound power levers for steady state, idle, and active seeks modes of
operation.
2.10.1 Test for prominent discrete tones (PDTs)
Seagate follows the ECMA-74 standards for measurement and identification of PDTs. An exception to this process is the use of the absolute
threshold of hearing. Seagate uses the lower limit for the threshold curve* to discern tone audibility and to compensate for the inaudible
components of sound prior to computation of tone ratios according to Annex D of the ECMA-74 standards.
*Defined as the median curve given by ISO 389-7 (Tf curve) minus 10dB at all frequencies.
2.11 Electromagnetic Immunity
When properly installed in a representative host system, the drive operates without errors or degradation in performance when subjected to the
radio frequency (RF) environment as defined in Table 7.
Table 6: Drive A-weighted Sound Power Levels (SWL, BA)
Idle1
1. 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.
Performance Seek
5-disk models 2.7 bels (typ) 2.9 bels (typ)
4-disk models 2.6 bels (typ) 2.7 bels (typ)
Table 7 Radio Frequency Environments
Test Description Performance
Criteria
Reference
Standard
Electrostatic discharge Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV BEN 61000-4-2: 95
Radiated RF immunity 80 to 1GHz, 3 V/m,
80% AM with 1 kHz sine AEN 61000-4-3: 96
Electrical fast transient ± 1 kV on AC mains, ± 0.5 kV on external I/O BEN 61000-4-4: 95
Surge immunity ± 1 kV differential, ± 2 kV common, AC mains BEN 61000-4-5: 95
Conducted RF immunity 150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz sine AEN 61000-4-6: 97
Power Frequency H-field
immunity
1 A/m, 50Hz/60Hz, 3 axes AEN 61000-4-8: 97
Voltage dips, interrupts 30% Reduction for 25 cycles
>95% Reduction for 250 cycles
>95%, 0.5 cycles
C
C
B
EN 61000-4-11: 94

Seagate BarraCuda Product Manual, Rev. J 15
2.12 Reliability
2.12.1 Data loss under power interruption with write cache enabled
Drive preserves its data during all operations except in cases where power to the drive is interrupted during write operations. This
could result in either an uncorrected data error being reported, or the entire sector/track becoming unreadable. This can be
permanently recovered by rewriting to the same location on the drive. Additionally any data present in the DRAM buffer will not be
written to the disk media, additionally, the drive will not be able to return the original data.
In order to prevent this data loss, the host should issue a standby immediate or flush cache command before a controlled power off
operation to the drive.
2.13 HDD and SSD Regulatory Compliance and Safety
For the latest regulatory and compliance information see: https://www.seagate.com/support/ scroll to bottom of page and click
the Compliance, Safety and Disposal Guide link.
2.13.1 Regulatory models
The following regulatory model number represent all features and configurations within the series: SKR003
2.14 Corrosive Environment
Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to light industrial environments containing
sulfurous gases, chlorine and nitric oxide, classes G and H per ASTM B845. However, this accelerated testing cannot duplicate every potential
application environment.
Users should use caution exposing any electronic components to uncontrolled chemical pollutants and corrosive chemicals as electronic drive
component reliability can be affected by the installation environment. The silver, copper, nickel and gold films used in Seagate products are
especially sensitive to the presence of sulfide, chloride, and nitrate contaminants. Sulfur is found to be the most damaging. In addition, electronic
components should never be exposed to condensing water on the surface of the printed circuit board assembly (PCBA) or exposed to an ambient
relative humidity greater than 95%. Materials used in cabinet fabrication, such as vulcanized rubber, that can outgas corrosive compounds should
be minimized or eliminated. The useful life of any electronic equipment may be extended by replacing materials near circuitry with sulfide-free
alternatives.
Nonrecoverable read errors 1 per 1014 bits read, max
Load/Unload (U/UL)
25°C, 50% relative humidity 600,000 software-controlled power on/off cycles
20,000 hard power on/off cycles
Rated workload Average annualized workload rating: <55 TB/year.
The specifications for the product assumes the I/O workload does not exceed the average annualized
workload rate limit of 55 TB/year. Workloads exceeding the annualized rate may degrade and impact
reliability as experienced by the particular application. The average annualized workload rate limit is
in units of TB per calendar year.
Warranty To determine the warranty for a specific drive, use a web browser to access the following web page:
http://www.seagate.com/support/warranty-and-replacements/.
From this page, click on the “Is my Drive under Warranty”link. The following are required to be provided:
the drive serial number, model number (or part number) and country of purchase.
The system will display the warranty information for the drive.

Seagate BarraCuda Product Manual, Rev. J 16
3. Unpacking, Configuring and Mounting the Drive
This chapter describes how to unpack, mount, configure and connect a BarraCuda. It also describes how to install the drive in systems.
3.1 Handling and Static-Discharge Precautions
After unpacking, and before installation, the drive may be exposed to potential handling and electrostatic discharge (ESD) hazards. Observe the
following standard handling and static-discharge precautions.
3.2 Configuring the Drive
Each drive on the Serial ATA interface connects in a point-to-point configuration with the Serial ATA host adapter. There is no master/slave
relationship because each drive is considered a master in a point-to-point relationships. If two drives are attached on one Serial ATA host adapter,
the host operating system views the two devices as if they were both “masters” on two separate ports. Both drives behave as if they are Device 0
(master) devices.
3.2.1 Serial ATA Cables and Connectors
The Serial ATA interface cable consists of four conductors in two differential pairs, plus three ground connections. The cable size may be 30 to 26
AWG with a maximum length of one meter (39.37 in). Refer to Table 8 for connector pin definitions. Either end of the SATA signal cable can be
attached to the drive or host.
For direct backplane connection, the drive connectors are inserted directly into the host receptacle. The drive and the host receptacle incorporate
features that enable the direct connection to be hot pluggable and blind mateable. For installations which require cables, users can connect the
drive as shown in1.
Figure 1 Attaching SATA Cabling
Each cable is keyed to ensure correct orientation. BarraCuda drives support latching SATA connectors.
CAUTION
• Keep the drive in the electrostatic discharge (ESD) bag until ready for installation to limit the drive’s exposure to ESD.
• Before handling the drive, put on a grounded wrist strap, or ground yourself frequently by touching the metal
chassis of a computer that is plugged into a grounded outlet. Wear a grounded wrist strap throughout the entire
installation procedure.
• Handle the drive by its edges or frame only.
• The drive is extremely fragile—handle it with care. Do not press down on the drive top cover.
• Always rest the drive on a padded, antistatic surface until mounting it in the computer.
• Do not touch the connector pins or the printed circuit board.
• Do not remove the factory-installed labels from the drive or cover them with additional labels. Removal voids the
warranty. Some factory-installed labels contain information needed to service the drive. Other labels are used to
seal out dirt and contamination.
Power cable
Signal cable
Signal connector
Power connector

Seagate BarraCuda Product Manual, Rev. J 17
3.3 Drive Mounting
Users can mount the drive in any orientation using four screws in the side-mounting holes or four screws in the bottom-mounting holes. Refer to2
and Figure 2 for drive mounting dimensions. Follow these important mounting precautions when mounting the drive:
•Allow a minimum clearance of 0.030 in (0.76 mm) around the entire perimeter of the drive for cooling.
•Use only M3 x 0.5 mounting screws.
•Do not overtighten the mounting screws. Maximum torque: 4.0 in-lb (0.4519 N-m).
•Four (4) threads (0.080 in, 2.032 mm) minimum screw engagement recommended.
•Avoid excessive drive distortion when mounting. Refer to the following specifications for stiffness/deflection information:
Figure 2 Mounting Dimensions
Top cover stiffness/deflection
Operating: no performance degradation, emitted noise,
mechanical damage, or hard errors
10 mm probe: 2.0kgf (typical)
Non-operating: no hard errors 10 mm probe: maximum 2.0kgf (instantaneous)

Seagate BarraCuda Product Manual, Rev. J 18
4. Serial ATA (SATA) Interface
These drives use the industry-standard Serial ATA interface that supports FIS data transfers. It supports ATA programmed input/output (PIO) modes
0–4; multiword DMA modes 0–2, and Ultra DMA modes 0–6. The drive also supports the use of the IORDY signal to provide reliable high-speed data
transfers.
For detailed information about the Serial ATA interface, refer to the Serial ATA: High Speed Serialized AT Attachment specification.
4.1 Hot-Plug Compatibility
BarraCuda drives incorporate connectors which enable users to hot plug these drives in accordance with the Serial ATA: High Speed Serialized AT
Attachment specification revision 2.0. This specification can be downloaded from www.serialata.org. This device requires a COMRESET from the
host after a hotplug event.
4.2 Serial ATA Device Plug Connector Pin Definitions
Table 8 summarizes the signals on the Serial ATA interface and power connectors. Refer to the Table Notes below.
Table 8 Serial ATA Connector Pin Definitions
Segment Pin Function Definition
Signal
S1 Ground 2nd mate
S2 A+ Differential signal pair A from Phy
S3 A-
S4 Ground 2nd mate
S5 B- Differential signal pair B from Phy
S6 B+
S7 Ground 2nd mate
Key and spacing separate signal and power segments
Power
P1 V33 3.3V power
P2 V33 3.3V power
P3 V33 3.3V power, pre-charge, 2nd mate
P4 Ground 1st mate
P5 Ground 2nd mate
P6 Ground 2nd mate
P7 V5 5V power, pre-charge, 2nd mate
P8 V5 5V power
P9 V5 5V power
P10 Ground 2nd mate
P11 Ground or LED signal If grounded, drive does not use deferred spin
P12 Ground 1st mate
P13 V12 12V power, pre-charge, 2nd mate
P14 V12 12V power
P15 V12 12V power