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14 Pipeline HD SATA Product Manual, Rev. F
Drive Specifications www.seagate.com
2.5 Physical characteristics
Maximum height
2TB model 26.1mm / 1.028 in
1TB model 20.20mm / 0.795 in
Maximum width 101.6mm / 4.0 in (± 0.010 in)
Maximum length 147.00mm / 5.78 in
Typical weight
2TB model 535g / 1.18 lb
1TB model 415g / 0.915 lb
Cache buffer 64MB (65,536kb)
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
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 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.
2.7 Start/stop times
Start/stop times @ 25°C
Power-on to ready (max)
Standby to ready (max)
Ready to spindle stop (max)
2TB 1TB
Read Write Read Write
<1.0 <1.2 <1.0 <1.2
<8.5 <9.0 <8.5 <9.0
5.1 5.1 5.1 5.1
2TB model 1TB model
<17.0s < 6.0s
<17.0s < 6.0s
10.0s 10.0s