Physical Characteristics; Seek Time - Seagate ST32122A - Medalist 2.1 GB Hard Drive Product Manual

Medalist 4342, 3232, 2122, 1722 and 1012 Product Manual
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

Maximum height (mm)
(inches)
Maximum width (mm)
(inches)
Maximum length (mm)
(inches)
Typical weight (grams)
(ounces)

1.5 Seek time

All seek times are measured using a 486 AT computer (or faster) with a
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.
87.8
16.7 (PIO mode 4 with IORDY)
16.7 (multiword DMA mode 2)
33.3 (Ultra DMA mode 1 and 2)
1:1
128
ST34342A ST32122A
ST33232A ST31722A
26.2
1.03
102.4
4.03
146.8
5.78
540 510
19.04 17.98
7
ST31012A
500
17.68