Medalist 10240, 7630, 5120, 2510 Product Manual, Rev. B
7
1.4 Physical characteristics
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
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.
I/O data-transfer rate
(Mbytes per second max)
16.6 (PIO mode 4 with IORDY)
16.6 (multiword DMA mode 2)
33.3 (Ultra DMA mode 2)
Interleave
1:1
Cache buffer (Kbytes)
128
Drive Specification
ST310240A, ST37630A,
ST35120A, ST32510A
Maximum height
(mm)
(inches)
26.10
1.028
Maximum width
(mm)
(inches)
101.85
4.010
Maximum length
(mm)
(inches)
147.00
5.787
Typical weight
(grams)
(pounds)
544
1.2
Seek type
Read
(msec, typ.)
Write
(msec, typ.)
Track-to-track
1.5
3.0
Average
10.5
12.5
Full-stroke
19.0
21.0
Average latency:
5.6 msec
