Physical Characteristics; Seek Time - Seagate ST34321A Product Manual

Medalist 8641, 6531, 4321, 3221 and 2110, Rev. B
Spindle speed RPM (
Internal data-transfer rate
(Mbits per second max)
I/O data-transfer rate
(Mbytes per second max)
Interleave
Cache buffer (Kbytes)

1.4 Physical characteristics

Drive Specification
Maximum height (mm)
(inches)
Maximum width (mm)
(inches)
Maximum length (mm)
(inches)
Typical weight (grams)
(pounds)

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
25°C ambient temperature. All times are measured using drive diagnos-
tics. The specifications in the table on page 8 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.
0.2%) 5,400
140
16.6 (PIO mode 4 with IORDY)
16.6 (multiword DMA mode 2)
33.3 (Ultra DMA mode 2)
1:1
128
ST38641A ST34321A
ST36531A ST33221A
ST32110A
26.10
1.028
101.85
4.010
147.00
5.787
544
1.2
7