Re: Linux: Why software RAID?

From: Bill Davidsen
Date: Mon Sep 04 2006 - 13:23:50 EST


Alan Cox wrote:

Ar Iau, 2006-08-24 am 07:31 -0700, ysgrifennodd Marc Perkel:


So - the bottom line answer to my question is that unless you are
running raid 5 and you have a high powered raid card with cache and
battery backup that there is no significant speed increase to use
hardware raid. For raid 0 there is no advantage.



If your raid is entirely on PCI plug in cards and you are doing RAID1
there is a speed up using hardware assisted raid because of the PCI bus
contention.


I would expect to see this with RAID5 as well, for the same reason...

--
bill davidsen <davidsen@xxxxxxx>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979

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