[ubuntu-uk] Software verses Hardware raid (was RE:Anyone evertried kolab on feisty)

[Alan Pope]

Hi Ian,

On Thu, 2007-09-27 at 21:20 +0100, Ian Pascoe wrote:
> An interesting topic and one that has recently been done to death on the
> Beowulf mailling lists under the "Big Storage" title (sorry, haven't sused
> out their archive system yet).  Now these guys are looking at HPC  and HA
> computing going up from 4 to 1000+nodes with PB size storage levels.
> 

Something most of us are unlikely to use on a daily basis.

> The conclusion they came up with was that for 99.9% of scenarios hardware

99.9% of scenarios that don't match what 99.9% of people here will
see :)

> RAID beat software RAID hands down - this was not hearsay but through
> experience.
> 

Beat using what criteria? Speed, I'd agree. And for organisations that
can afford 1000+node clusters I'd expect they can have spare RAID cards,
and indeed external SANs rather than a Dell optiplex box with 4 disks
for their storage :)

Cheers,
Al.
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