Seagate ST3300457FC Cheetah 15K.6 SAS Product Manual - Page 16
Start/stop time
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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. Maximum (with verify) Maximum (without verify) ST3450856SS ST3450056SS 176 88 ST3300656SS ST3300056SS 144 72 ST3146356SS ST3146756SS 100 50 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 Sustainable disk transfer rate*: Minimum Maximum 112 Mbytes/sec (typical) 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 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). 12 Cheetah 15K.6 SAS Product Manual, Rev. B