Re: [Xen-users] RAID-1 strategy for a Xen/CentOS server?

[Tom Brown <xensource.com@xxxxxxxxxxxxxxxxxxx>]

> To "best preserve" RAID1 mirroring protections of OS, Data, etc
>
>    *AND*
>
> optimize performance, how should I setup RAID for the "new" configurations?
because vbd are slower than "real-world" devices, I believe you want to 
move the mirroring into dom0, so that the domU's aren't sending the same 
data through the hypervisor twice... beyond that, all the rules are the 
same as they would be in a non-XEN config. (This just makes plain sense, 
there's less work to be done.)
There may be situations where it makes more sense to do the raid in the 
domUs, but you listed "optimize performance".
-Tom

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