SPECIFICATIONS
3.4Performance Specifications
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DESCRIPTION | ST250LM004 | ST320LM001 | ST500LM012 | ST640LM001 | ST750LM022 | ST1000LM024 | ||
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Seek Time (RD/WRT, Typ) |
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Average seek time |
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| 12/14 ms | |||||
Track to track seek time |
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| 2/4 ms | |||||
Full stroke seek time |
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| 22/24 ms | |||||
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` Average Latency |
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| 5.6 ms | |||||
Data Transfer Rate (Max) |
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buffer to/from media |
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| 145Mbits/s | |||||
host to/from buffer |
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| 300 MB/s | |||||
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Rotational Speed |
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| 5400 RPM Class | ||||
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Startup Time |
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| 4 sec / 8 sec | |||
| Drive Ready |
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(Typ / Max) |
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| Standby to |
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| 3.5 sec / 8 sec | ||||
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| Drive Ready |
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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.
Spinpoint M8 Product Manual REV 2.3 | 8 |
