Format Command Execution Time (Minutes); General Performance Characteristics; Start/Stop Time - Seagate CHEETAH 15K.7 SAS ST3300457SS Product Manual

5.2.2

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)
Note.
There is approximately a 1.5 increase in time to format a SED drive versus a non-SED drive 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).
5.2.3

General performance characteristics

Sustainable disk transfer rate*:
Minimum
Maximum
SAS Interface maximum instantaneous transfer rate
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
Flaw reallocation performance impact (for flaws reallocated at format time using
the spare sectors per sparing zone reallocation scheme.)
Average rotational latency
*Assumes system ability to support the rates listed and no cable loss.
1 MB/sec = 1,000,000 bytes/sec
5.3

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).
If the drive receives a START STOP UNIT command with the START bit equal to 0 before receiving a NOTIFY
(ENABLE SPINUP) primitive, the drive waits for a START STOP UNIT command with the START bit equal to 1.
After receiving a START STOP UNIT command with the START bit equal to 1, the drive waits for a NOTIFY
(ENABLE SPINUP) primitive. After receiving a NOTIFY (ENABLE SPINUP) primitive through either port, the
drive becomes ready for normal operations within 20 seconds (excluding the error recovery procedure).
10
600GB 450GB
119 90
60 45
300GB
58
29
122 Mbytes/sec (typical)
204 Mbytes/sec (typical)
600 Mbytes/sec* per port
Yes
Negligible
2.0 msec
Cheetah 15K.7 SAS Product Manual, Rev. D