Physical Characteristics; Seek Time - Seagate ST3000DM008 Product Manual

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2.5 Physical characteristics

Maximum height
Maximum width (all models)
Maximum length (all models)
Typical weight
Cache buffer

2.6 Seek time

Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive
diagnostics. The specifications in the table 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 5000 measurements of seeks between random tracks,
less overhead.
Typical seek times (ms)
Track-to-track
Average
Average latency
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 the noted values. However,
Note
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.
Seagate BarraCuda Product Manual, Rev. D
3TB and 2TB 26.1mm / 1.028 in
1TB and 500GB 20.20mm / 0.795 in
101.6mm / 4.0 in (± 0.010 in)
146.99mm / 5.787 in
3TB 626g / 1.38 lb
626g / 1.38 lb - or -
2TB
535g / 1.18 lb
1TB and 500GB 400g / 0.88lb
3TB, 2TB and 1TB 64MB
500GB 32MB
Read Write
1.0 1.2
8.5 9.5
4.16
Drive Specifications
11