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

Hi,

I'm planning to migrate my current server configuration:

    AMD Athlon/X2
    FreeBSD 62-Release
    2 x 250GB HW RAID1 (all partitions RAIDed, incl. swap)

to a Xen/CentOS config:

    AMD Athlon/X2
    Dom0
        CentOS 51
        Xen 31
    Dom1/1
        FreeBSD 7
    Dom1/2
        CentOS 51
    ...

To "best preserve" RAID1 mirroring protections of OS, Data, etc

    *AND*

optimize performance, how should I setup RAID for the "new" configurations?

Should DOM0 be RAIDed?

Each DOM1, as well?

Should I continue to use HW RAID or switch to SW?  A mix?


I understand I can do any/all ... choosing the "right" option is the goal,
here.

Advice is appreciated.

Regards,

Bob Tompkins
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