High availability ... again

Sebastian Hagedorn Hagedorn at uni-koeln.de
Tue Jun 22 13:11:25 EDT 2004


-- Etienne Goyer <etienne.goyer at linuxquebec.com> is rumored to have mumbled 
on Dienstag, 22. Juni 2004 12:09 Uhr -0400 regarding High availability ... 

>  From what I can see, I would have two possibilities to make a hot spare
> Cyrus IMAP daemon : replication, or cluster filesystem/block device
> (drdb, GFS, etc).

those aren't the only two options. We are using shared storage, but with 
regular fileystems (ext3 in our case, because Red Hat doesn't officially 
support XFS). The idea is that each partition is mounted only on one 
computer at a time. This is handled by the Red Hat Cluster Suite, aka 
Kimberlite. We are currently using a SCSI RAID with two separate SCSI 
controllers (one for each node of the cluster), but I'd recommend using 

Cheers, Sebastian
Sebastian Hagedorn M.A. - RZKR-R1 (Flachbau), Zi. 18, Robert-Koch-Str. 10
Zentrum für angewandte Informatik - Universitätsweiter Service RRZK
Universität zu Köln / Cologne University - Tel. +49-221-478-5587
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