Christopher Chan wrote:
No, mail spools/queues do not need replication. Stuff in the queue
are usually deleted in a second and such dynamic change is not worth
replicating. If you do put the queue on a distributed filesystem, in
most cases you cannot have more than one instance running save for
sendmail.
I think your statement here is flawed, in that if there is even a
single bit of the process you dont replicate - you've already lost the
HA game.
I am sorry but I do not share that view for incoming mail. The latency
in getting the mail replicated probably is longer than it takes to do
the actually delivery to the mail store.
DRBD works approximately like raid1 mirroring. Unless something breaks
it shouldn't add much latency since the duplicate disk will run at
approximately the same speed as the master.
--
Les Mikesell
lesmikesell@xxxxxxxxx
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