A few quick thought. You can never have too much ram. As to raid, I'd
just use Raid 1 - it's faster than raid 5. If you're running Linux I
like the reiser file system for email because it has unlimited inodes.
As to CPU - if you are running spam filtering especially spamassassin
the good fast processing helps. If you want to save money I think the
new dual core Athlons from AMD would be very cost effective.
Simon Chappell wrote:
Hello all,
I have been using Qmail and courier-imap for about 3 years now and it
has come time to install a bigger server.
I have been finding that Exim has many features that Qmail lacks so it
is also time to move to Exim.
We currently have a Dual P3 700 with 6 hard disks with 600 accounts on
it. We have moved webmail of to another server but Imap and Smtp is
still pushing the 15min load average past 6.00 .
We have about 100 users with Outlook using Imap and the rest use Horde
webmail.
With so many users is there anyone who can give me a few pointers as
to how big to go on the new server? I understand that disk IO is the
big thing with Imap so we are looking at Raid but not sure whether to
move from raid5 to another faster option. Also CPU's and Ram. We are
looking at Dual 3Gig with 4Gig of Ram.
Any pointers or help would be greatly accepted.
Simon
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