Product manual

Cheetah 15K.6 FC Product Manual, Rev. D

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:

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.

Sector Size

ST3450856FC

ST3450056FC

ST3300656FC

ST3300056FC

ST3146356FC

ST3146756FC

Decimal Hex Decimal Hex Decimal Hex

512 879,097,968 3465F870 585,937,500 22ECB25C 286,749,488 11177330

520 860,480,771 3349E503 573,653,848 22314358 280,790,185 10BC84A9

524 849,011,700 329AE3F4 566,007,800 21BC97F8 275,154,368 106685C0

528 836,812,167 31E0BD87 557,874,778 21407E5A 272,662,935 10408197