2.7Seek time

Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications below are defined as follows:

Track-to-track seek time is an average of all possible single-track seeks in both directions.

Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead.

Typical seek times (msec)*

Read

Write

 

 

 

Track-to-track

1.0

1.5

 

 

 

Average

12.5

14.5

 

 

 

Full-stroke

22.0

24.0

 

 

 

Average latency

5.56

5.56

 

 

 

*Measured in performance mode

Note. These drives are designed to consistently meet the seek times represented in this manual. Physical seeks, regardless of mode (such as track-to-track and average), are expected to meet or exceed the noted values. However, due to the manner in which these drives are formatted, benchmark tests that include command overhead or measure logical seeks may produce results that vary from these specifications.

2.8Time to ready

Time to ready

Typical

Max @ 25°C

 

 

 

Power-on to Ready (sec)

3.5

8.0

 

 

 

Standby to Ready (sec)

3.0

8.0

 

 

 

Momentus 5400.2 Blade Server Product Manual, Rev. B

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Seagate ST100824AB, ST98823AB, ST94813AB Seek time, Typical seek times msec Read Write, Time to ready Typical Max @ 25C