[cfgeeks] Combining hardware and software RAID on Solaris

[Kevin Korb]

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Depends on what kind of RAID.  RAID[345] are always better done in
hardware unless your controller is just plain lame.  RAID0 is usually
better done in software while RAID1 is usually about the same either
way.

The only time I have seen someone do a combination is when they make a
bunch of hardware RAID1s and stripe them together with software RAID0.
That was how the EMC at Maxcess worked.

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On Sun, 10 Dec 2006, Gil Young wrote:

> Date: Sun, 10 Dec 2006 22:49:09 -0500
> From: Gil Young <gjyoung at cfl.rr.com>
> To: Central Florida Geeks <cfgeeks at mail.cfgeeks.org>
> Subject: [cfgeeks] Combining hardware and software RAID on Solaris
> 
> I have four FC chassis coming in, each will have it's own dedicated HBA and 
> reside in/on a V890.  This got me to thinking, has anyone ever done a combo 
> of hardware and software RAID for performance gains?  Were the gains 
> appreciable?
>
> I'm thinking that it may be a good article/study, at the very least tested 
> with simple read/write benchmarks to see how it fares.
>
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