Coert Waagmeester schrieb:
> Hello all,
>
>
> At our office a have a server running 3 Xen domains. Mail server, etc.
>
> I want to make this setup more redundant.
>
> There are a few howtos on the combination of Xen, DRBD, and heartbeat.
> That is probably the best way.
>
> Another option I am looking at is a piece of shared storage,
> a machine running CentOS with a large software RAID 5 array.
>
How large?
Depending on the size, RAID6 is the better option (with >=1TB disks, the
rebuild can take longer than the statistical average time another disk
needs to fail).
> What is the best means of sharing the storage?
> I would really like to use a combination of an iSCSI target server, and
> GFS or OCFS.
>
>
If you don't already do GFS (and have been doing so for years), I'd say
you better only do it in a configuration that is either supported by
RedHat (e.g. with RHEL) or some competent 3rd-party that can help you
over the pitfalls.
Else you are on your own, with only the GFS mailinglist, yourself and
your keyboard ;-)
Rainer
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