On 1/22/07, Christopher D. Clausen <[EMAIL PROTECTED]> wrote:

I'm guesing that GFS would be best perfromance wise in your situation,
although I'm not sure you can mirror it across two disk servers.

Note: GFS requires shared storage. Local storage can be exported to
other nodes via gndb, but that makes for a highly 'unavailable' setup.
Look at LVM mirroring if you're interested in such setups using local
storage.

Using AFS with something that does block-level replication will likely
cause you pain.  Thats not to say that it won't work, its just that AFS
wasn't designed to be used in this way.  If you do go with AFS, I'd
suggest simply using the AFS replication method to mirror data every 15
minutes or so to another file server.  Or use each client machine and
mirror at that level (host based mirroring.)

Other than what Christopher is suggesting, I would also recommend you
have a look at Lustre (http://www.lustre.org &
http://www.clusterfs.com).  Lustre uses local storage and integrates
with linux-ha quite well. You can run it on-top of drbd devices for a
highly available active/active setup.
--
Mustafa A. Hashmi
[EMAIL PROTECTED]
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