4.3Performance
•
•600 Mbytes/sec maximum instantaneous data transfers
•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
Note. There is no significant performance difference between
4.4Reliability
•Annualized Failure Rate (AFR) of 0.55%
•Mean Time Between Failures (MTBF) of 1,600,000 hours
•Balanced low mass rotary voice coil actuator
•Incorporates
•
4.5Formatted 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:
Seagate designs 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:
Capacity (Blocks)
|
| ST9146852SS |
| ST973452SS | ||
|
| ST9146752SS |
| ST973352SS | ||
|
| ST9146652SS |
| ST973252SS | ||
|
|
|
|
|
|
|
Sector Size | Decimal |
| Hex | Decimal |
| Hex |
|
|
|
|
|
|
|
512 | 286,749,488 |
| 11177330 | 143,374,744 |
| 88BB998 |
|
|
|
|
|
|
|
520 | 280,790,185 |
| 10BC84A9 | 140,395,093 |
| 85E4255 |
|
|
|
|
|
|
|
524 | 275,154,368 |
| 106685C0 | 137,577,184 |
| 83342E0 |
|
|
|
|
|
|
|
528 | 272,662,935 |
| 10408197 | 136,331,467 |
| 82040CB |
|
|
|
|
|
|
|
8 | Savvio 15K.2 SAS Product Manual, Rev. E |
