Barracuda® ES.2
High-capacity, business-critical Tier 2 enterprise drives
Seagate Makes the Best Even Better With a
•
•With a choice of either SATA or SAS interfaces, the Barracuda ES.2 drive utilizes perpendicular recording technology to deliver the industry’s
•The best
24x7
•
Seagate Global Customer Support
•Get presales and technical support at support.seagate.com.
•Visit our knowledge base for answers to common support questions.
•Find documentation for current and legacy drives.
•Utilize our online troubleshooting and diagnostic tools.
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Specifications | 1 TB1 | 750 GB1 | 500 GB1 | 250 GB1 |
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Model Number | ST31000340NS | ST3750330NS | ST3500320NS | ST3250310NS |
| ST31000640SS | ST3750630SS | ST3500620SS |
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Interface | SATA 3Gb/s, 1.5Gb/s | SATA 3Gb/s, 1.5Gb/s | SATA 3Gb/s, 1.5Gb/s | SATA 3Gb/s, 1.5Gb/s |
| SAS 3Gb/s | SAS 3Gb/s | SAS 3Gb/s |
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External Transfer Rate (Gb/s) | 3.0 | 3.0 | 3.0 | 3.0 |
Performance |
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Transfer Rate |
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Maximum Internal (Mb/s) | 1287 | 1287 | 1287 | 1287 |
Maximum Sustained, SATA (MB/s) | 105 | 105 | 105 | 105 |
Maximum Sustained, SAS (MB/s) | 116 | 116 | 116 | 116 |
Cache, Multisegmented (MB) |
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SATA | 32 | 32 | 32 | 32 |
SAS | 16 | 16 | 16 | — |
Average Latency (msec) | 4.16 | 4.16 | 4.16 | 4.16 |
Spindle Speed (RPM) | 7200 | 7200 | 7200 | 7200 |
Seek Time |
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Average Read/Write (msec) | 8.5/9.5 | 8.5/9.5 | 8.5/9.5 | 8.5/9.5 |
0.8/1.0 | 0.8/1.0 | 0.8/1.0 | 0.8/1.0 | |
Configuration/Organization |
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Bytes per Sector |
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SATA | 512 | 512 | 512 | 512 |
SAS | 512, 520, 524, 528 | 512, 520, 524, 528 | 512, 520, 524, 528 | — |
Reliability/Data Integrity |
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Mean Time Between Failures (MTBF, hours) | 1.2 million | 1.2 million | 1.2 million | 1.2 million |
Reliability Rating at Full 24x7 Operation (AFR) | 0.73% | 0.73% | 0.73% | 0.73% |
Nonrecoverable Read Errors per Bits Read | 1 sector per 10E15 | 1 sector per 10E15 | 1 sector per 10E15 | 1 sector per 10E15 |
Error Control/Correction (ECC) | 10 bit | 10 bit | 10 bit | 10 bit |
Interface Ports |
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SATA | Single | Single | Single | Single |
SAS | Dual | Dual | Dual | — |
Limited Warranty (years) | 5 | 5 | 5 | 5 |
Power Management |
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Typical (W) |
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SATA | 11.6 | 11.6 | 10.6 | 10.6 |
SAS | 12.5 | 12.5 | 12.5 | — |
Idle Average (W) |
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SATA | 8.0 | 8.0 | 8.0 | 8.0 |
SAS | 9.0 | 9.0 | 9.0 | — |
Environmental |
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Temperature, Operating (°C) | 5 to 55 | 5 to 55 | 5 to 55 | 5 to 55 |
Temperature, Nonoperating (°C) | ||||
Shock, Operating: 2 ms (Gs) | 63 | 63 | 63 | 63 |
Shock, Nonoperating: 2 ms (Gs) | 300 | 300 | 300 | 300 |
Acoustics Idle | 2.7 | 2.7 | 2.5 | 2.5 |
Rotational Vibration @ 1500 Hz max (Rad/sec2) | 12.5 | 12.5 | 12.5 | 12.5 |
Physical |
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Height (in/mm) | 1.02/26.11 | 1.02/26.11 | 1.02/26.11 | 1.02/26.11 |
Width (in/mm) | 4/101.6 | 4/101.6 | 4/101.6 | 4/101.6 |
Depth (in/mm) | 5.78/146.99 | 5.78/146.99 | 5.78/146.99 | 5.78/146.99 |
Weight (lb/kg) | 1.493/0.677 | 1.396/0.633 | 1.199/0.543 | 1.141/0.518 |
1One gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes when referring to hard drive capacity.
AMERICAS | Seagate Technology LLC | 920 Disc Drive, Scotts Valley, California 95066, United States, |
ASIA/PACIFIC | Seagate Technology International Ltd. 7000 Ang Mo Kio Avenue 5, Singapore 569877, | |
EUROPE, MIDDLE EAST AND AFRICA | Seagate Technology SAS | |
Copyright © 2008 Seagate Technology LLC. All rights reserved. Printed in USA. Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Barracuda, DiscWizard and PowerTrim 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. When referring to hard 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. Seagate reserves the right to change, without notice, product offerings or specifications. Publication Number: