Thanks for all the answers! I have decided to use reiser with raid1, as I have experience with reiser on samba and it works very well. Are there any fstab mount options that you could recommend for the raid array? I saw a recommendation for EXT3 to use noatime.I think the performance of those disks (and the RAID you put on them) will be much more significant that the filesystem you use, considering the size of your user population. And given that factor, I'd say that even ext3 won't give you any problems performance-wise. Still, reiserfs, IMO, would be preferable for mail files.
John
Thanks,
H
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