Seagate ST94811AB Physical characteristics, Seek time, Time to ready, Typical seek times msec

Models: ST94811AB

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2.6Physical characteristics

2.6Physical characteristics

Height

(mm)

9.5 +/–0.2

 

(inches)

0.374

+/–0.0078

 

 

 

 

Width

(mm)

69.85

+/–0.25

 

(inches)

2.75

+/–0.0098

 

 

 

 

Length

(mm)

100.2

+/–0.25

 

(inches)

3.945

+/–0.0098

 

 

 

 

Typical weight

(grams)

99

 

 

(pounds)

0.218

 

 

 

 

 

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

1.5

2.0

 

 

 

Average

12.0

14.0

 

 

 

Full-stroke

22.0

26.0

 

 

 

Average latency

5.6

5.6

 

 

 

*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

 

 

 

Power-on to Ready (sec)

3.9

8

 

 

 

Standby to Ready (sec)

2.6

8

 

 

 

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Momentus Blade Server Product Manual, Rev. B

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Seagate ST94811AB manual Physical characteristics, Seek time, Time to ready, Typical seek times msec, Read, Write