96ND900G-SS-SG10E

Product Manual Seagate® Enterprise Performance 10K HDD v8 SAS with TurboBoostTM Standard Models Self-Encrypting Drive Models SED FIPS140-2 Models Review Pending ST1800MM0018 ST1200MM0018 512 Emulation ST900MM0018 ST600MM0018 ST1800MM0068 ST1200MM0068 ST900MM0068 ST600MM0068 ST1800MM0128 512 Emulation ST1200MM0158 w/TurboBoost ST900MM0128 ST600MM0158 ST1800MM0148 ST1200MM0178 ST900MM0148 ST600MM0178 ST1800MM0008 4096 Native ST1200MM0008 ST900MM0008 ST600MM0008 ST1800MM0038 ST1200MM0038 ST900MM0038 ST600MM0038 ST1800MM0088 4096 Native ST1200MM0118 w/TurboBoost ST900MM0088 ST600MM0118 ST1800MM0108 ST1200MM0138 ST900MM0108 ST600MM0138 ST1200MM0088 ST900MM0168 ST600MM0088 ST300MM0008 ST1200MM0098 ST900MM0178 ST600MM0098 ST300MM0018 512 Native 100746003 Rev. C March 2015 ST1800MM0078 ST1800MM0158 ST1800MM0048 ST1800MM0118 Document Revision History Revision Date Pages affected Rev. A 08/04/2014 Initial release. Rev. B 10/27/2014 fc, 7-9, 11-12, 14, 16, 18 & 54-59. Rev. C 03/11/2015 fc, bc, 7-8, 13-15, 18, 30, 35, 38-39, 42-43, 46, 55 & 57-64. Applied new logo, added 900GB & 300GB 5xx native models © 2013 Seagate Technology LLC. All rights reserved. Publication number: 100746003, Rev. C March 2015 Seagate, Seagate Technology and the Spiral logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Seagate Enterprise Performance 10K HDD 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. The FIPS logo is a certification mark of NIST, which does not imply product endorsement by NIST, the U.S., or Canadian governments. 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. CONTENTS Seagate® Technology Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.0 Applicable standards and reference documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1.1 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1.2 Electromagnetic compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.1.3 European Union Restriction of Hazardous Substances (RoHS) . . . . . . . . . . . . . 9 2.1.4 China Restriction of Hazardous Substances (RoHS) Directive . . . . . . . . . . . . . 10 2.2 Reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.0 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1 Standard features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 Media description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4 Formatted capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5 Programmable drive capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.6 Factory-installed options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 11 12 12 12 13 13 4.0 Performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1 Internal drive characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2 Performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2.1 Format command execution time (minutes) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2.2 General performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3 Start/stop time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4 Prefetch/multi-segmented cache control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5 Cache operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5.1 Caching write data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5.2 Prefetch operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5.3 TurboBoost caching operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 14 14 14 15 15 15 16 16 17 17 5.0 Reliability specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1 Error rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1.1 Recoverable Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1.2 Unrecoverable Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1.3 Seek errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1.4 Interface errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2 Reliability and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF) . . . . 5.2.2 Preventive maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2.3 Hot plugging the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2.4 S.M.A.R.T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2.5 Thermal monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2.6 Drive Self Test (DST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2.7 Product warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 18 18 18 18 18 19 19 19 19 19 21 21 23 6.0 Physical/electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1 PowerChoiceTM power management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.1 PowerChoice reporting methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2 AC power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3 DC power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 24 25 25 25 Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 2 CONTENTS 6.4 6.5 6.6 6.3.1 Conducted noise immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3.2 Power sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3.3 Current profiles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Environmental limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5.1 Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5.2 Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5.5 Air cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5.6 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5.7 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5.8 Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 30 30 34 36 36 36 36 37 38 38 38 38 39 7.0 About FIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 8.0 About self-encrypting drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1 Data encryption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2 Controlled access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2.1 Admin SP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2.2 Locking SP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2.3 Default password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3 Random number generator (RNG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.4 Drive locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.5 Data bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.6 Cryptographic erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.7 Authenticated firmware download . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.8 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.9 Supported commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.10 Sanitize - CRYPTOGRAPHIC ERASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.11 RevertSP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 41 41 41 41 41 42 42 42 42 43 43 43 43 43 9.0 Defect and error management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.1 Drive internal defects/errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.2 Drive error recovery procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3 SAS system errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.4 Background Media Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.5 Deferred Auto-Reallocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.6 Idle Read After Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.7 Protection Information (PI). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.7.1 Levels of PI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.7.2 Setting and determining the current Type Level. . . . . . . . . . . . . . . . . . . . . . . . . 9.7.3 Identifying a Protection Information drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.8 Seagate RAID Rebuild ™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 44 44 45 46 46 46 46 47 47 47 47 10.0 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.1 Drive orientation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.2 Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.3 Drive mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.4 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 48 48 49 49 11.0 Interface requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 11.1 SAS features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 3 CONTENTS 11.2 11.3 11.4 11.5 11.6 11.7 11.1.1 Task management functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.1.2 Task management responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dual port support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SCSI commands supported. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.3.1 Inquiry data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.3.2 Mode Sense data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Miscellaneous operating features and conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.4.1 SAS physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.4.2 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.4.3 Connector requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.4.4 Electrical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.4.5 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.4.6 SAS transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.4.7 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Signal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.5.1 Ready LED Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.5.2 Differential signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SAS-3 Specification compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Additional information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 50 50 50 51 55 56 62 62 65 65 65 65 66 66 66 66 67 67 67 4 FIGURES Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Current profiles for 1800GB models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Current profiles for 1200GB and 900G 5xx native models. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Current profiles for 900GB 4K and 5xx emulation models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Current profiles for 600GB and 300GB 5xx native models . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 1800GB (at 12Gb) DC current and power vs. input/output operations per second . . . . . . . . . 34 1200GB (at 12Gb) DC current and power vs. input/output operations per second . . . . . . . . . 34 900GB (at 12Gb) DC current and power vs. input/output operations per second . . . . . . . . . . 35 600GB (at 12Gb) DC current and power vs. input/output operations per second . . . . . . . . . . 35 Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Mounting configuration dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Example of FIPS tamper evidence labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 SAS device plug dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 SAS device plug dimensions (detail) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 SAS transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 5 Seagate Technology Support Services ® For information regarding online support and services, visit http://www.seagate.com/about/contact-us/technical-support/ Available services include: • Presales & Technical support • Global Support Services telephone numbers & business hours • Authorized Service Centers 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 and Distribution partner portal, visit: http://www.seagate.com/partners/ For Seagate reseller portal, visit: http://www.seagate.com/partners/my-spp-dashboard/ Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 6 1.0 Scope This manual describes Seagate® Enterprise Performance 10K HDD v8 (Serial Attached SCSI) with TurboBoost™ disk drives. Seagate Enterprise Performance 10K HDD drives support the SAS Protocol specifications to the extent described in this manual. The SAS Interface Manual (part number 100293071) describes the general SAS characteristics of this and other Seagate SAS drives. The Self-Encrypting Drive Reference Manual, part number 100515636, describes the interface, general operation, and security features available on Self-Encrypting Drive models. Product data communicated in this manual is specific only to the model numbers listed in this manual. The data listed in this manual may not be predictive of future generation specifications or requirements. If integrators are designing a system which will use one of the models listed or future generation products and need further assistance, please contact the Field Applications Engineer (FAE) or our global support services group as shown on page 6. Unless otherwise stated, the information in this manual applies to standard and Self-Encrypting Drive models. Standard Models Self-Encrypting Drive (SED) Models FIPS 140-2 Level 2 Models Review Pending 512 Emulation ST1800MM0018 ST1800MM0068 ST1200MM0018 ST1200MM0068 ST900MM0018 ST900MM0068 ST600MM0018 ST600MM0068 ST1800MM0078 512 Emulation w/TurboBoost ST1800MM0128 ST1800MM0148 ST1200MM0158 ST1200MM0178 ST900MM0128 ST900MM0148 ST600MM0158 ST600MM0178 ST1200MM0158 4096 Native ST1800MM0008 ST1800MM0038 ST1200MM0008 ST1200MM0038 ST900MM0008 ST900MM0038 ST600MM0008 ST600MM0038 ST1800MM0048 4096 Native w/TurboBoost ST1800MM0088 ST1800MM0108 ST1200MM0118 ST1200MM0138 ST900MM0088 ST900MM0118 ST600MM0118 ST600MM0138 ST1800MM0118 512 Native ST1200MM0088 ST1200MM0098 ST900MM0168 ST900MM0178 ST600MM0088 ST600MM0098 ST300MM0008 ST300MM0018 NOTE 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. NOTE The Self-Encrypting Drive models indicated on the cover of this product manual have provisions for “Security of Data at Rest” based on the standards defined by the Trusted Computing Group (see www.trustedcomputinggroup.org). For more information on FIPS 140-2 Level 2 certification see Section 7.0 on page 40. For product certification status visit - http://csrc.nist.gov/groups/STM/cmvp/documents/140-1/1401vend.htm. Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 7 2.0 Applicable standards and reference documentation The drives documented in this manual have been developed as system peripherals to the highest standards of design and construction. The drives depend on host equipment to provide adequate power and environment for optimum performance and compliance with applicable industry and governmental regulations. Special attention must be given in the areas of safety, power distribution, shielding, audible noise control, and temperature regulation. In particular, the drives must be securely mounted to guarantee the specified performance characteristics. Mounting by bottom holes must meet the requirements of Section 10.3. 2.1 Standards The Seagate Enterprise Performance 10K HDD family complies with Seagate standards as noted in the appropriate sections of this manual and the Seagate SAS Interface Manual, part number 100293071. The drives are recognized in accordance with UL 60950-1 as tested by UL, CSA 60950-1 as tested by CSA, and EN60950-1 as tested by TUV. The security features of Self-Encrypting Drive models are based on the “TCG Storage Architecture Core Specification” and the “TCG Storage Workgroup Security Subsystem Class: Enterprise_A” specification with additional vendor-unique features as noted in this product manual. 2.1.1 Electromagnetic compatibility The drive, as delivered, is designed for system integration and installation into a suitable enclosure prior to use. The drive is supplied as a subassembly and is not subject to Subpart B of Part 15 of the FCC Rules and Regulations. The design characteristics of the drive serve to minimize radiation when installed in an enclosure that provides reasonable shielding. The drive is capable of meeting the Class B limits of the FCC Rules and Regulations when properly packaged; however, it is the user’s responsibility to assure that the drive meets the appropriate EMI requirements in their system. Shielded I/O cables may be required if the enclosure does not provide adequate shielding. If the I/O cables are external to the enclosure, shielded cables should be used, with the shields grounded to the enclosure and to the host controller. 2.1.1.1 Electromagnetic susceptibility As a component assembly, the drive is not required to meet any susceptibility performance requirements. It is the responsibility of those integrating the drive within their systems to perform those tests required and design their system to ensure that equipment operating in the same system as the drive or external to the system does not adversely affect the performance of the drive. See Section 6.3, DC power consumption. Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 8 2.1.2 Electromagnetic compliance Seagate uses an independent laboratory to confirm compliance with the directives/standards for CE Marking and RCM Marking. The drive was tested in a representative system for typical applications and comply with the Electromagnetic Interference/Electromagnetic Susceptibility (EMI/EMS) for Class B products. The selected system represents the most popular characteristics for test platforms. Although the test system with this Seagate model complies with the directives/standards, we cannot guarantee that all systems will comply. The computer manufacturer or system integrator shall confirm EMC compliance and provide the appropriate marking for their product. Electromagnetic compliance for the European Union If this model has the CE Marking it complies with the European Union requirements of the Electromagnetic Compatibility Directive 2004/108/EC as put into place on 20 July 2007. Australian RCM If this model has the RCM Marking it complies with the Australia/New Zealand Standard AS/NZ CISPR22 and meets the Electromagnetic Compatibility (EMC) Framework requirements of the Australian Communications and Media Authority (ACMA). Canada ICES-003 If this model has the ICES-003 Marking it complies with the Canadian Standard Association Standard CAN/CSA-CISPR 2210, Information Technology Equipment - Radio Disturbance Characteristics - Limits and Methods of Measurement. Korean KCC If these drives have the Korean Communications Commission (KCC) logo, they comply with KN22, KN 24, and KN61000. Taiwanese BSMI If this model has the Taiwanese certification mark then it complies with Chinese National Standard, CNS13438. 2.1.3 European Union Restriction of Hazardous Substances (RoHS) The European Union Restriction of Hazardous Substances (RoHS) Directive restricts the presence of chemical substances, including Lead (Pb), in electronic products effective July 2006. A number of parts and materials in Seagate products are procured from external suppliers. We rely on the representations of our suppliers regarding the presence of RoHS substances in these parts and materials. Our supplier contracts require compliance with our chemical substance restrictions, and our suppliers document their compliance with our requirements by providing material content declarations for all parts and materials for the disk drives documented in this publication. Current supplier declarations include disclosure of the inclusion of any RoHS-regulated substance in such parts or materials. Seagate also has internal systems in place to ensure ongoing compliance with the RoHS Directive and all laws and regulations which restrict chemical content in electronic products. These systems include standard operating procedures that ensure that restricted substances are not utilized in our manufacturing operations, laboratory analytical validation testing, and an internal auditing process to ensure that all standard operating procedures are complied with. Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 9 2.1.4 China Restriction of Hazardous Substances (RoHS) Directive This product has an Environmental Protection Use Period (EPUP) of 20 years. The following table contains information mandated by China's "Marking Requirements for Control of Pollution Caused by Electronic Information Products" Standard. "O" indicates the hazardous and toxic substance content of the part (at the homogeneous material level) is lower than the threshold defined by the China RoHS MCV Standard. "X" indicates the hazardous and toxic substance content of the part (at the homogeneous material level) is over the threshold defined by the China RoHS MCV Standard. 2.2 Reference documents SCSI Commands Reference Manual Seagate part number: 100293068 SAS Interface Manual Seagate part number: 100293071 ANSI SAS Documents SFF-8223 SFF-8460 SFF-8470 SFF-8482 ANSI INCITS.xxx ISO/IEC 14776-xxx ISO/IEC 14776-xxx ISO/IEC 14776-xxx 2.5” Drive Form Factor with Serial Connector HSS Backplane Design Guidelines Multi Lane Copper Connector SAS Plug Connector Serial Attached SCSI (SAS-3) Standard (T10//BSR INCITS 519 rev. 06) SCSI Architecture Model-3 (SAM-4) Standard (T10/1683-D) SCSI Primary Commands-3 (SPC-3) Standard (T10/1416-D) SCSI Block Commands-3 (SBC-2) Standard (T10/1417-D) ANSI Small Computer System Interface (SCSI) Documents X3.270-1996 (SCSI-3) Architecture Model Trusted Computing Group (TCG) Documents (apply to Self-Encrypting Drive models only) TCG Storage Architecture Core Specification, Rev. 1.0 TCG Storage Security Subsystem Class Enterprise Specification, Rev. 1.0 Self-Encrypting Drives Reference Manual Seagate part number: 100515636 In case of conflict between this document and any referenced document, this document takes precedence. Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 10 3.0 General description Seagate® Enterprise Performance 10K HDD v8 drives provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers. The Serial Attached SCSI interface is designed to meet next-generation computing demands for performance, scalability, flexibility and high-density storage requirements. The TurboBoost functionality provides improved performance over standard HDDs in real-world workloads. This improvement is due to the addition of a solid state component that caches “hot” data for reads as well as protects write data via non-volatile cache (NVC). Seagate Enterprise Performance 10K HDD drives are random access storage devices designed to support the Serial Attached SCSI Protocol as described in the ANSI specifications, this document, and the SAS Interface Manual (part number 100293071) which describes the general interface characteristics of this drive. Seagate Enterprise Performance 10K HDD drives are classified as intelligent peripherals and provide level 2 conformance (highest level) with the ANSI SCSI-1 standard. The SAS connectors, cables and electrical interface are compatible with Serial ATA (SATA), giving future users the choice of populating their systems with either SAS or SATA hard disk drives. This allows integrators to continue to leverage existing investment in SCSI while gaining a 12Gb/s serial data transfer rate. NOTE Never disassemble the HDA and do not attempt to service items in the sealed enclosure (heads, media, actuator, etc.) as this requires special facilities. The drive does not contain user-replaceable parts. Opening the HDA for any reason voids the warranty. Seagate Enterprise Performance 10K HDD drives use a dedicated load/unload zone at the outermost radius of the media to eliminate the possibility of destroying or degrading data by landing in the data zone. The heads automatically go to the ramp load/unload when power is removed from the drive and during the deeper sleep modes. An automatic shipping lock prevents potential damage to the heads and discs that results from movement during shipping and handling. The shipping lock disengages and the head load process begins when power is applied to the drive. The drives also use a high-performance actuator assembly with a low-inertia, balanced, patented, straight arm design that provides excellent performance with minimal power dissipation in any orientation. 3.1 Standard features Seagate Enterprise Performance 10K HDD drives have the following standard features: • 3.0 / 6.0 / 12.0 Gb Serial Attached SCSI (SAS) interface • Integrated dual port SAS controller supporting the SCSI protocol • Support for SAS expanders and fanout adapters • Firmware downloadable using the SAS interface • 128 - deep task set (queue) • Supports up to 32 initiators • 128MB data buffer (see Section 4.5) • NVC-backed write cache of approximately 512K (4096 native and 512 emulation standard models) • 32GB TurboBoost read cache • 8MB TurboBoost NVC-backed write cache • Jumperless configuration • User-selectable logical block sizes for 512 emulation and native models (512, 520, 524 or 528 bytes per logical block) • User-selectable logical block sizes for 4096 native models (4096, 4160, 4192 or 4224 bytes per logical block) • Industry standard SFF 2.5-inch dimensions • Programmable logical block reallocation scheme • Flawed logical block reallocation at format time • Programmable auto write and read reallocation • Reallocation of defects on command (Post Format) • ECC maximum burst correction length of 520 bits for 512 byte blocks and 1400 bits for 4K byte blocks. • No preventive maintenance or adjustments required • Dedicated head load/unload zone and automatic shipping lock • Embedded servo design • Self diagnostics performed when power is applied to the drive • Zone bit recording (ZBR) • Vertical, horizontal, or top down mounting Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 11 • • • • • • • Dynamic spindle brake Drive Self Test (DST) Background Media Scan (BMS) Idle Read After Write (IRAW) Power Choice SAS Power Disable RAID Rebuild ™ Seagate Enterprise Performance 10K HDD Self-Encrypting Drive models have the following additional features: • • • • • • • Automatic data encryption/decryption Controlled access Random number generator Drive locking 16 independent data bands Cryptographic erase of user data for a drive that will be repurposed or scrapped Authenticated firmware download 3.2 Media description The media used on the drive has an glass substrate coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability and environmental protection. 3.3 • • • • • • Performance Firmware-controlled multisegmented cache designed to dynamically adjust segments for enhanced system performance 1200MB/s maximum instantaneous data transfers. 10K RPM spindle. Average latency = 2.9ms Background processing of queue Supports start and stop commands (spindle stops spinning) Adaptive seek velocity; improved seek performance NOTE 3.4 There is no significant performance difference between Self-Encrypting Drive and standard (non-Self-Encrypting Drive) models. Formatted capacities Standard OEM models are formatted to 512 bytes per block for 512 emulation and native drives and 4096 bytes per block for 4096 native drives. The block size is selectable at format time. Supported block sizes are 512, 520, 524, and 528 for 512 emulation and native drives and 4096, 4160, 4192, and 4224 for 4096 native drives. Users having the necessary equipment may modify the data block size before issuing a format command and obtain different formatted capacities than those listed. To provide a stable target capacity environment and at the same time provide users with flexibility if they choose, Seagate recommends product planning in one of two modes: Seagate designs specify capacity points at certain block sizes that Seagate guarantees current and future products will meet. We recommend customers use this capacity in their project planning, as it ensures a stable operating point with backward and forward compatibility from generation to generation. The current guaranteed operating points for this product are shown below. Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 12 Capacity (Blocks) 1800GB 1200GB 900GB Sector Size Decimal Hex Decimal Hex Decimal Hex 512 3,516,328,368 D196E9B0h 2,344,225,968 8BBA0CB0h 1,758,174,768 68CB9E30h 520 3,441,923,088 CD279410h 2,294,615,392 88C50D60h 1,720,961,544 6693CA08h 524 3,396,046,800 CA6B8FD0h 2,264,031,200 86F25FE0h 1,698,023,400 6535C7E8h 528 3,347,248,672 C782F620h 2,231,499,112 8501F968h 1,673,624,336 63C17B10h 4096 439,541,046 1A32DD36h 293,028,246 11774196h 219,771,846 D1973C6h 4160 430,961,544 19AFF388h 287,307,696 111FF7B0h 215,480,776 CD7F9C8h 4192 425,524,816 195CFE50h 283,683,208 10E8A988h 212,762,408 CAE7F28h 4224 422,301,144 192BCDD8h 281,534,096 10C7DE90h 211,150,576 C95E6F0h Capacity (Blocks) 600GB 300GB Sector Size Decimal Hex Decimal Hex 512 1,172,123,568 45DD2FB0h 585,937,500 22ECB25Ch 520 1,147,307,696 446286B0h 573,653,848 22314358h 524 1,132,015,600 43792FF0h 566,007,800 21BC97F8h 528 1,115,749,560 4280FCB8h 557,874,778 21407E5Ah 4096 146,515,446 8BBA5F6h n/a n/a 4160 143,653,848 88FFBD8h n/a n/a 4192 141,841,608 87454C8h n/a n/a 4224 140,767,048 863EF48h n/a n/a 3.5 Programmable drive capacity Using the Mode Select command, the drive can change its capacity to something less than maximum. See the Mode Select (6) parameter list table in the SAS Interface Manual, part number 100293071. A value of zero in the Number of Blocks field indicates that the drive will not change the capacity it is currently formatted to have. A number other than zero and less than the maximum number of LBAs in the Number of Blocks field changes the total drive capacity to the value in the Number of Blocks field. A value greater than the maximum number of LBAs is rounded down to the maximum capacity. 3.6 Factory-installed options The following items may be ordered which are incorporated at the manufacturing facility during production or packaged before shipping. Some of the options available are (not an exhaustive list of possible options): • Other capacities can be ordered depending on sparing scheme and sector size requested. • Single-unit shipping pack. The drive is normally shipped in bulk packaging to provide maximum protection against transit damage. Units shipped individually require additional protection as provided by the single unit shipping pack. Users planning single unit distribution should specify this option. • The Safety and Regulatory Agency Specifications, part number 75789512, is usually included with each standard OEM drive shipped, but extra copies may be ordered. Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 13 4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Seagate Enterprise Performance 10K HDD drives. 4.1 Internal drive characteristics Sector size Drive capacity Read/write data heads Bytes per track Bytes per surface Tracks per surface (total) Tracks per inch Peak bits per inch Areal density Disk rotation speed Avg rotational latency Sector size Drive capacity Read/write data heads Bytes per track Bytes per surface Tracks per surface (total) Tracks per inch Peak bits per inch Areal density Disk rotation speed Avg rotational latency 1800GB 4096 & 512 Emulation 1800 8 1065 227,273 213.4 328 1993 644.6 10K 2.9 1200GB 4096 & 512 Emulation 1200 6 1038 213,991 206.1 316.8 1943 606.9 10K 2.9 900GB 4096 & 512 Emulation 900 4 1065 227,273 213.4 328 1993 644.6 10K 2.9 600GB 4096 & 512 Emulation 600 3 1038 202,020 194.6 299 1943 573.0 10K 2.9 1200GB 512 Native 1200 6 947 202,051 213.4 328 1952 619.85 10K 2.9 900GB 512 Native 900 6 1031 151,545 147 328 1952 619.85 10K 2.9 600GB 512 Native 600 3 947 202,051 213.4 328 1952 619.9 10K 2.9 300GB 512 Native 300 3 1109 101,030 91.1 280.3 1952 547.23 10K 2.9 4.2 Performance characteristics 4.2.1 Format command execution time (minutes) Models GB (formatted, rounded off value) Kbytes (avg, rounded off values) MB (unformatted, rounded off value) Ktracks (user accessible, rounded off values) KTPI (avg, rounded off values) Kb/in Gb/in2 rpm ms Models GB (formatted, rounded off value) Kbytes (avg, rounded off values) MB (unformatted, rounded off value) Ktracks (user accessible, rounded off values) KTPI (avg, rounded off values) Kb/in Gb/in2 rpm ms 1800GB models 1200GB models 900GB models 600GB models Maximum (with verify) 341 222 174 117 Maximum (without verify) 171 111 87 58 4096-byte sectors 512-byte sectors 1200GB models 900GB models 600GB models 300GB models Maximum (with verify) 249 169 125 54 Maximum (without verify) 125 85 63 28 Execution time measured from receipt of the last byte of the Command Descriptor Block (CDB) to the request for a Status Byte Transfer to the Initiator (excluding connect/disconnect). When changing sector sizes, the format times shown above may need to be increased by 30 minutes. Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 14 4.2.2 General performance characteristics Sustained transfer rate for 4096 native and 512 emulation 112 to 230 MiB/s ** 117 to 241 MB/s Sustained transfer rate for 512 native 103 to 205 MiB/s ** 108 to 215 MB/s SAS Interface maximum instantaneous transfer rate 1200 MB/s* per port (dual port = 2400 MB/s*) Logical block sizes 512 emulation and native - 512 (default), 520,524, or 528 4096 native - 4096 (default), 4160, 4192, or 4224 Read/write consecutive sectors on a track Yes Flaw reallocation performance impact (for flaws reallocated at format time using the spare sectors per sparing zone reallocation scheme.) Negligible Average rotational latency 2.9ms *Assumes no errors and no relocated logical blocks. Rate measured from the start of the first logical block transfer to or from the host. ** MiB/s x 1.048 = MB/s 4.3 Start/stop time The drive accepts the commands listed in the SAS Interface Manual less than 3 seconds after DC power has been applied. If the drive receives a NOTIFY (ENABLE SPINUP) primitive through either port and has not received a START STOP UNIT command with the START bit equal to 0, the drive becomes ready for normal operations within 20 seconds (excluding the error recovery procedure). If the drive receives a START STOP UNIT command with the START bit equal to 0 before receiving a NOTIFY (ENABLE SPINUP) primitive, the drive waits for a START STOP UNIT command with the START bit equal to 1. After receiving a START STOP UNIT command with the START bit equal to 1, the drive waits for a NOTIFY (ENABLE SPINUP) primitive. After receiving a NOTIFY (ENABLE SPINUP) primitive through either port, the drive becomes ready for normal operations within 20 seconds (excluding the error recovery procedure). If the drive receives a START STOP UNIT command with the START bit and IMMED bit equal to 1 and does not receive a NOTIFY (ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT command. The START STOP UNIT command may be used to command the drive to stop the spindle. Stop time is 20 seconds (maximum) from removal of DC power. SCSI stop time is 20 seconds. There is no power control switch on the drive. However, power can be cycled on the drive by utilizing SAS Power Disable feature defined by T10 (i.e. drive Pin 3 high). 4.4 Prefetch/multi-segmented cache control The drive provides a prefetch (read look-ahead) and multi-segmented cache control algorithms that in many cases can enhance system performance. Cache refers to the drive buffer storage space when it is used in cache operations. To select this feature, the host sends the Mode Select command with the proper values in the applicable bytes in page 08h. Prefetch and cache operations are independent features from the standpoint that each is enabled and disabled independently using the Mode Select command; however, in actual operation, the prefetch feature overlaps cache operation somewhat as described in sections 4.5.1 and 4.5.2. All default cache and prefetch mode parameter values (Mode Page 08h) for standard OEM versions of this drive family are given in Section 11.3.2. Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 15 4.5 Cache operation Note. Refer to the SAS Interface Manual for more detail concerning the cache bits. Of the 128MB physical buffer space in the drive, approximately 60,000KB are available as a data cache. The remaining buffer space is reserved for internal drive use. The drive keeps track of the logical block addresses of the data stored in each segment of the buffer. If the cache is enabled (see RCD bit in the SAS Interface Manual ), data requested by the host with a read command is retrieved from the buffer, if possible, before any disk access is initiated. If cache operation is not enabled, the buffer is still used, but only as circular buffer segments during disk medium read operations (disregarding Prefetch operation for the moment). That is, the drive does not check in the buffer segments for the requested read data, but goes directly to the medium to retrieve it. The retrieved data merely passes through some buffer segment on the way to the host. All data transfers to the host are in accordance with buffer-full ratio rules. See the explanation provided with the information about Mode Page 02h (disconnect/ reconnect control) in the SAS Interface Manual. The following is a simplified description of the prefetch/cache operation: Case A—read command is received and all of the requested logical blocks are already in the cache: 1. Drive transfers the requested logical blocks to the initiator. Case B—A Read command requests data, and at least one requested logical block is not in any segment of the cache: 1. The drive fetches the requested logical blocks from the disk and transfers them into a segment, and then from there to the host in accordance with the Mode Select Disconnect/Reconnect parameters, page 02h. 2. If the prefetch feature is enabled, refer to section 4.5.2 for operation from this point. Each cache segment is actually a self-contained circular buffer whose length is an integer number of logical blocks. The drive dynamically creates and removes segments based on the workload. The wrap-around capability of the individual segments greatly enhances the cache’s overall performance. NOTE 4.5.1 The size of each segment is not reported by Mode Sense command page 08h, bytes 14 and 15. The value 0XFFFF is always reported regardless of the actual size of the segment. Sending a size specification using the Mode Select command (bytes 14 and 15) does not set up a new segment size. If the STRICT bit in Mode page 00h (byte 2, bit 1) is set to one, the drive responds as it does for any attempt to change an unchangeable parameter. Caching write data NOTE Write caching in this section is the traditional SCSI write caching (WCE=1) where writes are not protected on power loss. TurboBoost provides NVC-protected write caching when WCE=0 over a portion of the DRAM. NOTE Refer to the SAS Interface Manual for more detail concerning the cache bits. Write caching is a write operation by the drive that makes use of a drive buffer storage area where the data to be written to the medium is stored while the drive performs the Write command. Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 16 If read caching is enabled (RCD=0), then data written to the medium is retained in the cache to be made available for future read cache hits. The same buffer space and segmentation is used as set up for read functions. The buffer segmentation scheme is set up or changed independently, having nothing to do with the state of RCD. When a write command is issued, if RCD=0, the cache is first checked to see if any logical blocks that are to be written are already stored in the cache from a previous read or write command. If there are, the respective cache segments are cleared. The new data is cached for subsequent Read commands. If the number of write data logical blocks exceed the size of the segment being written into, when the end of the segment is reached, the data is written into the beginning of the same cache segment, overwriting the data that was written there at the beginning of the operation; however, the drive does not overwrite data that has not yet been written to the medium. If write caching is enabled (WCE=1), then the drive may return Good status on a write command after the data has been transferred into the cache, but before the data has been written to the medium. If an error occurs while writing the data to the medium, and Good status has already been returned, a deferred error will be generated. The Synchronize Cache command may be used to force the drive to write all cached write data to the medium. Upon completion of a Synchronize Cache command, all data received from previous write commands will have been written to the medium. Section 11.3.2 shows the mode default settings for the drive. 4.5.2 Prefetch operation If the Prefetch feature is enabled, data in contiguous logical blocks on the disk immediately beyond that which was requested by a Read command are retrieved and stored in the buffer for immediate transfer from the buffer to the host on subsequent Read commands that request those logical blocks (this is true even if cache operation is disabled). Though the prefetch operation uses the buffer as a cache, finding the requested data in the buffer is a prefetch hit, not a cache operation hit. To enable Prefetch, use Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead - DRA bit). DRA bit = 0 enables prefetch. The drive does not use the Max Prefetch field (bytes 8 and 9) or the Prefetch Ceiling field (bytes 10 and 11). When prefetch (read look-ahead) is enabled (enabled by DRA = 0), the drive enables prefetch of contiguous blocks from the disk when it senses that a prefetch hit will likely occur. The drive disables prefetch when it decides that a prefetch hit is not likely to occur. 4.5.3 TurboBoost caching operations Read data that has been promoted into the TurboBoost read cache does not persist through a power cycle. Read data is retrieved from the rotating media after a power cycle. When WCE=0, TurboBoost provides NVC-protected write caching over the portion of the DRAM used to coalesce writes. Write data only goes into NVC when there is an unexpected power loss to the drive. The NVC has 90-day data retention. When WCE=1, a TurboBoost drive will operate on writes like a standard drive–writes in cache are not protected by NVC and may be lost with power loss. Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 17 5.0 Reliability specifications The following reliability specifications assume correct host and drive operational interface, including all interface timings, power supply voltages, environmental requirements and drive mounting constraints. Seek error rate: Read Error Rates1 Recovered Data Unrecovered Data Miscorrected Data Interface error rate: Mean Time Between Failure (MTBF): Annualized Failure Rate (AFR): Preventive maintenance: 1. Less than 10 errors in 108 seeks Less than 10 error in 1012 bits transferred (OEM default settings) Less than 1 sector in 1016 bits transferred Less than 1 sector in 1021 bits transferred Less than 1 error in 1012 bits transferred 2,000,000 hours 0.44% None required Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated. 5.1 Error rates The error rates stated in this manual assume the following: • The drive is operated in accordance with this manual using DC power as defined in paragraph 6.3, "DC power consumption." • Errors caused by host system failures are excluded from error rate computations. • Assume random data. • Default OEM error recovery settings are applied. This includes AWRE, ARRE, full read retries, full write retries and full retry time. 5.1.1 Recoverable Errors Recoverable errors are those detected and corrected by the drive, and do not require user intervention. Recoverable Data errors will use Error Correction when needed. Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a read, and using write bits transferred for recoverable errors occurring during a write. 5.1.2 Unrecoverable Errors An unrecoverable data error is defined as a failure of the drive to recover data from the media. These errors occur due to head/media or write problems. Unrecoverable data errors are only detected during read operations, but not caused by the read. If an unrecoverable data error is detected, a MEDIUM ERROR (03h) in the Sense Key will be reported. Multiple unrecoverable data errors resulting from the same cause are treated as 1 error. 5.1.3 Seek errors A seek error is defined as a failure of the drive to position the heads to the addressed track. After detecting an initial seek error, the drive automatically performs an error recovery process. If the error recovery process fails, a seek positioning error (Error code = 15h or 02h) will be reported with a Hardware error (04h) in the Sense Key. Recoverable seek errors are specified at Less than 10 errors in 108 seeks. Unrecoverable seek errors (Sense Key = 04h) are classified as drive failures. 5.1.4 Interface errors An interface error is defined as a failure of the receiver on a port to recover the data as transmitted by the device port connected to the receiver. The error may be detected as a running disparity error, illegal code, loss of word sync, or CRC error. Seagate Enterprise Performance 10K HDD v8 w/TurboBoost Product Manual, Rev. C 18 5.2 Reliability and service The reliability of Seagate Enterprise Performance 10K HDD disk drives can be enhanced by ensuring that the drive receives adequate cooling. Section 6.0 provides temperature measurements and other information that may be used to enhance the service life of the drive. Section 10.2 provides recommended air-flow information. 5.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF) The production disk drive shall achieve an annualized failure-rate of 0.44% (MTBF of 2,000,000 hours) over a 5 year service life when used in Enterprise Storage field conditions as limited by the following: • 8760 power-on hours per year. • HDA temperature as reported by the drive