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SPECIFICATIONS
Spinpoint M8 Product Manual REV 2.3
8
3.4 Performance Specifications
Table 3-4: Performance Specifications
DESCRIPTION
ST250LM004 ST320LM001 ST500LM012 ST640LM001 ST750LM022 ST1000LM024
Seek Time (RD/WRT,
Typ)
Average seek time
Track to track seek time
Full stroke seek time
12/14 ms
2/4 ms
22/24 ms
`
Average Latency
5.6 ms
Data Transfer Rate
(Max)
buffer to/from
media
host to/from buffer
145Mbits/s
300 MB/s
Rotational Speed
5400 RPM Class
Startup Time
(Typ / Max)
Power on to
Drive Ready
4 sec / 8 sec
Standby to
Drive Ready
3.5 sec / 8 sec
NOTES:
Seek time is defined as the time from the receipt of a read, write or seek command until the actuator has
repositioned and settled on the desired track with the drive operating at nominal DC input voltages and
nominal operating temperature.
Average seek time is determined by averaging the time to complete 1,000 seeks of random length.
Average latency is the time required for the drive to rotate 1/2 of a revolution and on average is
incurred after a seek completion prior to reading or writing user data.
Spin up time is the time elapsed between the supply voltages reaching operating range and the drive
being ready to accept all commands.
Actual rotational speed can be different a little.