[cfgeeks] Combining hardware and software RAID on Solaris

[Liston Bias]

I have seen some gains from striping a set luns on different sets of 
redundant raid disks through testing...  If you have hardware device 
dedicated to your server (i.e. Clariion dedicated to single server) that 
will very likely never change then it may be worth explorer.  However, the 
gains were minimal.

Nothing is my world is static, and the pains from configurating this kind 
of thing wrong are not worth the risk to me.  It makes maintainance and 
response to change more time consuming.  Are we pushing the envelope 
because we can or because the application requires it?

I imagine the gains would improve as the things like write cache of your 
SAN device are decreased.

Regards,
Liston


On Sun, 10 Dec 2006, Gil Young wrote:

> 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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