Seth Vidal wrote:
[monster data set description snipped]
> So were considering the following:
>
> Dual Processor P3 something.
> ~1gb ram.
> multiple 75gb ultra 160 drives - probably ibm's 10krpm drives
> Adaptec's best 160 controller that is supported by linux.
[snip]
> So my questions are these:
> Is 90MB/s a reasonable speed to be able to achieve in a raid0 array
> across say 5-8 drives?
While you might get this from your controller data bus, I'm skeptical
of moving this much data consistently across the PCI bus. I think
it has a maximum of 133 MB/sec bandwidth (33 MHz * 32 bits width).
Especially if (below) you have some network access going on, at
near gigabit speeds.. you're just pushing lots of data.
> What controllers/drives should I be looking at?
See if there is some sort of system you can get with multiple
PCI busses, bridged or whatnot.
> And has anyone worked with gigabit connections to an array of this size
> for nfs access? What sort of speeds can I optimally (figuring nfsv3 in
> async mode from the 2.2 patches or 2.4 kernels) expect to achieve for
> network access.
I've found vanilla nfs performance to be crummy, but haven't played
with it at all.
Ed
--
Edward Schernau, mailto:[EMAIL PROTECTED]
Network Architect http://www.schernau.com
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