Seagate ST31000533CS manual Physical characteristics, Seek time, Start/stop times, GB Models

2.4Physical characteristics

Maximum height 1000 GB models

Maximum width

Maximum length

Typical weight 1000 GB models

Cache buffer 1000 GB models

26.1 mm (1.028 inches)

101.6mm (4.000 +/- 0.010 inches)

146.99mm (5.787 inches)

630 grams (1.389 lbs)

32 Mbytes (32,768 kbytes)

2.5Seek 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 5,000 measurements of seeks between random tracks, less overhead.

Typical seek times (msec)	Read	Write
Track-to-track	<1.0	<1.2
Average (1000 GB models)	<14.0	<15.0
Average latency:	4.16

*Measured in performance mode. **Measured in quiet 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 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.

2.6Start/stop times

	1000 GB Models
Power-on to Ready (sec)	20 (max)
Standby to Ready (sec)	15 (max)
Ready to spindle stop (sec)	10 (max)

Pipeline HD Pro Serial ATA Product Manual, Rev. C 7