3.2Media description
The media used on the drive has an aluminum substrate coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability and environmental protection.
3.3Performance
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•400 Mbytes/sec maximum instantaneous data transfers per port
•15k RPM spindle; average latency = 2.0 msec
•Background processing of queue
•Supports start and stop commands (spindle stops spinning)
•Adaptive seek velocity; improved seek performance
3.4Reliability
•Annualized Failure Rate (AFR) of 0.55%
•Mean Time Between Failures (MTBF) of 1,600,000 hours
•Incorporates
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3.5Formatted capacities
Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time and must be a multiple of 4 bytes. 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:
1.Seagate designs specify capacity points at certain sector 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:
| ST973451FC |
| ST936751FC |
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Sector Size | Decimal | Hex | Decimal | Hex |
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512 | 143,374,744 | 88BB998h | 71,687,372 | 445DCCCh |
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520 | 140,395,093 | 85E4255h | 70,197,547 | 42F212Bh |
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524 | 137,577,184 | 83342E0h | 68,766,592 | 4194B80h |
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528 | 136,331,467 | 82040CBh | 68,165,733 | 4102065h |
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2.Seagate drives also may be used at the maximum available capacity at a given sector size, but the excess capacity above the guaranteed level will vary between other drive families and from generation to genera- tion, depending on how each sector size actually formats out for zone frequencies and splits over servo bursts. This added capacity potential may range from 0.1 to 1.3 percent above the guaranteed capacities listed above. Using the drives in this manner gives the absolute maximum capacity potential, but the user must determine if the extra capacity potential is useful, or whether their assurance of backward and for- ward compatibility takes precedence.
Savvio 15K.1 FC Product Manual, Rev. B | 9 |
