From: Simon Josefsson (no email)
Date: Fri Dec 07 2001 - 14:43:35 EST
Ken Murchison <> writes:
> Well, you'd also have to sync /var/imap so you'd keep the mailbox db,
> seen state, subscriptions and quotas in sync. You'd probably have to
> quiesce Cyrus so that no mail gets delivered, read, moved, etc.
>
> You could use rsync to do the replication or I believe that there are
> some network RAID1 solutions out there.
>
> If I was going to do this myself, I'd get myself a dual ported FC RAID5
> box, and setup a SAN with my 2 servers both talking the RAID5. You'd
> need some SAN software to share the filesystem. Something like SGI's
> CXFS *should* work nicely.
I was thinking of doing more distributed mirroring, I want one mail
server in one end of the country and another in the other end of the
country and they should be synced.
I could setup two iSCSI devices (SCSI over IP), one on each machine,
and then run software RAID-1 on them from the two places. I wonder if
there is a free or open source file system that could handle
concurrent access? This would actually be a much more clean approach
than using rsync, which I've also been thinking about.
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