Seagate ST3300655LC Cheetah 15K.6 FC Product Manual - Page 15

3.2 Media 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. 3.3 Performance • Programmable multi-segmentable cache buffer • 400 Mbytes/sec maximum instantaneous data transfers per port • 15k RPM spindle; average latency = 2.0 msec • Command queuing of up to 128 commands • 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 FDE and non-FDE models 3.4 Reliability • Annualized Failure Rate (AFR) of 0.55% • Increased LSI circuitry integration • Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.) • Dithering • 5-year warranty 3.5 Formatted capacities Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time and must be one of the supported sizes listed in the table below. 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: ST3450856FC ST3450056FC Sector Size Decimal 512 879,097,968 520 860,480,771 524 849,011,700 528 836,812,167 Hex 3465F870 3349E503 329AE3F4 31E0BD87 ST3300656FC ST3300056FC Decimal 585,937,500 573,653,848 566,007,800 557,874,778 Hex 22ECB25C 22314358 21BC97F8 21407E5A ST3146356FC ST3146756FC Decimal 286,749,488 280,790,185 275,154,368 272,662,935 Hex 11177330 10BC84A9 106685C0 10408197 3.5.1 Programmable drive capacity Using the Mode Select command, the drive can change its capacity to something less than maximum. See the Mode Select Parameter List table in the SCSI Commands Reference Manual. Refer to the Parameter list block descriptor number of blocks field. A value of zero in the number of blocks field indicates that the drive shall not change the capacity it is currently formatted to have. A number in the number of blocks field that is less than the maximum number of LBAs changes the total drive capacity to the value in the block descriptor number of blocks field. A value greater than the maximum number of LBAs is rounded down to the maximum capacity. Cheetah 15K.6 FC Product Manual, Rev. D 9