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Matt Douhan wrote:
<blockquote cite="mid200505161127.46420.matt@fruitsalad.org" type="cite">
<pre wrap="">On Monday 16 May 2005 12.55, christophe robert wrote:
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<pre wrap="">Martin Konold wrote:
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<pre wrap="">If i reformulate my question .
How many users i could to put in one server ( with kolab ) and when i
must to install a design like murder ..
for example :
If i have around 5000 or 10000 users and 90000 mails by day , is
it serious with kolab to have a centralized server .
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<pre wrap=""><!---->
90000 emails / day = 90000 / 24 = 3750 emails / hour wich is ok for a decent
single CPU P4 and 1GB RAM box
We are handling 5000 emails / hour on a Xeon 3Ghz / 2 GB RAM IBM server and
that runs nicely, just do not underestimate disk I/O when you design your
server.
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That's right .. <br>
<br>
Do you use an external card like "Umem (cache)" to improve the writing
. <br>
<br>
Is it possible to use disks "10000 RPM" without having a bottleneck
(in Writing ) for this configuration<br>
<br>
<br>
Thanks .. <br>
<br>
<blockquote cite="mid200505161127.46420.matt@fruitsalad.org" type="cite">
<pre wrap="">Also the busier the server you need to consider your backup solutions and make
sure the filesystem has snapshot capabilities, otherwise service disruption
will be huge when you have to stop the imap master to backup the message
store, we use FreeBSD and the -L flag to dump and that allows us to backup a
live filesystem.
We have 2 even larger installations than this too, but I cannot go into to
much details about them in public before asking the clients.
rgds
Matt
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