We are using cyrus-imap for a long time. Our architecture is a SAN from EMC and thanks to our "DELL support" we are obliged to install redhat. The only option we have is to use ext3fs on rather old kernels. We have 4000 accounts for staff and 20000 for students
The system is rather fast and reliable. BUT..
Once, there was a bad shutdown corrupting ext3fs and we spent 6 hours on an fsck.
Next we discovered that our backup system was going slower and slower. We just pointed out that it was due to fragmentation, and guess what, there's no online defrag tool for ext3.
I'm looking for other solutions:
ext4fs (does somebody use such filesystem?), xfs
zfs (but we should switch to solaris or freebsd and throw away our costly SAN)
use a NetApp Appliance (are you using such a device?, NFS seems to be tricky with cyrus..)
Thanks for your advice
Dom
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Dominique LALOT
Ingénieur Systèmes et Réseaux
http://annuaire.univmed.fr/showuser?uid=lalot
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