I want to set up multiple qmail machines to access an NFS backend. We have
about 10,000 users (running maildir) and an average of 5 emails/user/dat and
av. 10K in size. On average, there are 6 simultaneous pop sessions with
approx. 200 new sessions/min.
We have tried a Redhat6.1 backend on the NFS with Redhat 6.1 NFS clients.
The result was that the qmail machines were BARELY able to keep up. If
there were any pauses on the NFS server, the POP sessions would build to
50-60 very quickly with qmail crashing at about 300 sessions. Once qmail
exceeded about 70 sessions, it was beyond the point of return and would not
recover.
The NFS server was nothing special (P350/IDE 256Mb RAM). We also tried a
Dell 2300 (Dual 400/RAID5) NT server running Intergraph NFS.... But the
performance was abysmal! Performing an ls in a user/new directory took 21
seconds for a response.
I think NFS would work, but I don't really want a Netapp F5 ($50,000). What
NFS experiences are out there?
If you wish - respond privately [EMAIL PROTECTED]
Duane.
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