we need some information about cyrus-imap server

Andrew Morgan morgan at orst.edu
Tue Mar 14 12:13:50 EST 2006

On Tue, 14 Mar 2006, Jure [UTF-8] Pe?ar wrote:

> On Tue, 14 Mar 2006 09:52:55 -0300
> Sergio Devojno Bruder <bruder at haxent.com.br> wrote:
>>> 1. Is one Cyrus is capable enough to work for 1-3 Tera bytes
>> We currently have 10 TB distributed in 4 cyrus backends (2,2,2 and
>> 4TB), fiber channel to storage. One note: We use a non-stock
>> directory hash function (2 levels deep instead of one).
> This sounds interesting. With two levels deep hash one would easily get
> around 32k subdirs per dir limit most file systems have, which
> basically leaves you without much choice but reiserfs.
> I'm getting dangerously close to 32k users per letter and I don't feel
> comfortable with fulldirhash. Even with fulldirhash one can have at
> most 26*32k (~850k) users per instance, assuming nice even
> distribution ... But two level hash would raise this limit way up and
> give more choice of filesystems.
> Is your hash available as a patch? Have you thought about getting it
> included in 2.3 branch?

You have that many users on one Cyrus server under one partition?  Wow.

What about just defining a 2nd partition in Cyrus?  It could be on the 
same filesystem partition, of course.


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