Re: hot-add unformatted drive to RAID array automagically
On Wed, Feb 02, 2005 at 05:50:02PM -0500, Mark Bucciarelli wrote:
> On Wednesday 02 February 2005 13:23, Wouter Verhelst wrote:
>
> > So, what you want is hardware RAID. Not just because it does that, also
> > because it's (usually) quite a bit faster.
>
> Is this proven or a myth? I've seen analysis that say software raid is
> faster, sometimes much. I guess "it depends" (on CPU, if server is i/o
> bound or cpu bound, etc.)
Having a dedicated processor that does just one task usually implies
faster processing than programming a general-purpose processor for the
task.
Note, I said "usually". I've seen a number of RAID arrays, and while
some are extremely fast, others are even slower than a single regular
hard disk when running in RAID5 mode.
I've had good experiences with Mylex RAID-controllers in that regard.
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