using Cyrus was Re: [CentOS] Re: Planning Mail Server (with low resources)
Feizhou
feizhou at graffiti.net
Wed Dec 7 17:01:37 UTC 2005
Aleksandar Milivojevic wrote:
> Quoting Feizhou <feizhou at graffiti.net>:
>
>> a courier-imap/dovecot box would only just have to access a SAN and
>> that is all there is to clustering. Multiple courier-imap/dovecot
>> boxes hitting a database for user info and mailbox location and then
>> hitting the san for the files. simple.
>
>
> I think SAN is way out of reach of somebody who is left to build mail
> server for
> 2000 users with only 40GB drive.
Whoa, we were on the topic of clustering...this thread is not quite all
about the guy with 2k users anymore...
>
> Anyhow, what if your SAN storage or NFS server goes down? Your
> mailboxes go
> down with it. Hm, not much difference there. You are just replacing one
> component that might fail, with another component that might equally
> fail. This is a rahter complicated issue, and there is no single way to
> implement it.
SAN != NFS. SAN's provide multiple paths to the data where data is
mirrored across different disks and accessible through more than on channel.
> Courier works for some folks. Cyrus works for some folks. They are
> both good.
> You choose one and after some time learn to live with its limitations.
I am out to find out those limitations and their environments.
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