Richard Elling <[EMAIL PROTECTED]> wrote:
> > If a disk fitness test were available to verify disk read/write and
> > performance, future drive problems could be avoided.
> >
> > Some example tests:
> > - full disk read
> > - 8kb r/w iops
> > - 1mb r/w iops
> > - raw throughput
>
> Some problems can be seen by doing a simple sequential read and comparing
> it to historical data. It depends on the failure mode, though.
Something that people often forget about are the bearings. Sometimes,
the disks do write too early asuming that the head is already on track.
The work out bearing however causes a track following problem....
For this reason, you need to run a random write test on old disks.
sformat includes such a test...
Jörg
--
EMail:[EMAIL PROTECTED] (home) Jörg Schilling D-13353 Berlin
[EMAIL PROTECTED] (uni)
[EMAIL PROTECTED] (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily
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