Seagate Medalist 2531, Product Manual

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1.5 Seek time
All seek times are measured using a 486 AT computer (or faster) with an
8.3 MHz I/O bus. The measurements are taken with nominal power at
sea level and 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.
•
Full-stroke seek time is one-half the time needed to seek from the first
data cylinder to the maximum data cylinder and back to the first data
cylinder. The full-stroke typical value is determined by averaging 100
full-stroke seeks in both directions.
Seek type
Seek
(msec, typ.) Read
(msec, typ.) Write
(msec, typ.)
Track-to-track 2.0 2.5 3.5
Average 12.0 12.5 14.5
Full-stroke 23.5 24.0 25.0
Average latency: 6.67 msec
Note. This drive is designed to consistently meet the seek times repre-
sented in this manual. Physical seeks, regardless of mode (such
as track-to-track and average) are expected to meet or exceed
the noted values. Due to the manner in which this drive is for-
matted, however, benchmark tests that include command over-
head or measure logical seeks may produce results that vary
from these specifications.
1.6 Start/stop times
Power-on to Ready (sec) 9 (typical)
Standby to Ready (sec) 9 (typical)
Ready to Complete Stop (sec) 9 (typical)
Medalist 3240 and Medalist 2531 Product Manual, Rev. A 7