csgr@alpha.cs.ru.ac.za (Geoff Rehmet) (02/23/91)
Hi,
I was wondering if someone could give me more details about the advantages
and disadvantages (and any other info) about the native and translation modes
of the Seagate ST157A hard disk.
I'm using an AT system (12 MHz) with an ST157, currently configured
as a 7 head drive, 733 cylinders, 17 sectors per track,
write precompensate 300.
Just to see if there were any speed differences I decided to configure
the drive in native mode i.e. 6 heads, 560 tracks, 26 sectors per track
wpcom 0.
In fact the speed of the drive was very slightly slower (using the Checkit
hard disk benchmark) than in translation mode.
Can anyone explain the reason for this?
The benchmark values I got were:
Ave. access time track to track search transfer rate
native 27.5ms 8.1ms 403.8k/s
xlation 27.5ms 1.1ms 415.8k/s
Please email responses to me. I'll post a summary if there is a lot
of interest.
Thanks,
Geoff Rehmet.
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