Sun to Linux on Dell

I have a cust
pounding a Sun E450 I believe they
said it was with a
large RAID with fiber channels.
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They pound this
thing at 2,037 I/O per seconds and
end up having about
3,868 I/O per data block wait.
This is averaged
over 3-5 days, 24 hr/day, so there
are times it's way
over that. While sometimes slow,
performance is
acceptable most of the time.
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They are
contemplating moving it to Linux and a
very high end Dell
system, perhaps 4-8 CPU, etc.
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I've always heard
Sun was pretty much the best
on heavy I/O and if
it were not for the
fiber channels,
they would probably have
been hurting big
time some time ago.
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They are only in
R&D right now, but has anyone
done a move of this
nature?
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The database is
Siebel with many mods and
sub systems,
average tuned, about 76gb. It
is about 139
million records. They are around
200 users or
so.
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face="Courier New">Maks