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Cheetah 15K.6 SAS Product Manual, Rev. B
4.2.2 Format command execution time (minutes)
When changing sector sizes, the format times shown below may need to be increased by 30 minutes.
Note. There is no significant difference in the format time between FDE and non-FDE models of the same
capacity.
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).
4.2.3 General performance characteristics
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).
ST3450856SS
ST3450056SS
ST3300656SS
ST3300056SS
ST3146356SS
ST3146756SS
Maximum (with verify)
176 144 100
Maximum (without verify)
88 72 50
Sustainable disk transfer rate*:
Minimum 112 Mbytes/sec (typical)
Maximum 171 Mbytes/sec (typical)
SAS Interface maximum instantaneous transfer rate 300 Mbytes/sec* per port
Logical block sizes
Default is 512-byte data blocks
Sector sizes variable to 512, 520, and 528 kbytes.
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 2.0 msec
*Assumes system ability to support the rates listed and no cable loss.
1 MB/sec = 1,000,000 bytes/sec