I'm setting up a new mail server (dovecot + sendmail + SpamAssassin +
ClamAV + MIMEDefang) to replace an aging CentOS 6 box. The new box is a
low-end PowerEdge with an SSD, 3 4TB red drives on a PERC RAID controller
which I'll probably set up RAID5, and possibly mirrored internal SD cards
as a boot device. I'm debating how to partition it and am soliciting advice.
My initial instinct is to put /boot and the OS on the SSD and the home
directories with their mail store on the RAID array. I might put a rescue
partition on the internal SD drive (which is normally intended for a VM
host). Does anyone see anything wrong with that? Should I do something
different? Anything I should avoid putting on the SSD, such as swap, /tmp,
and /var/tmp?
I've been running Red Hat as a small office server since 5.2 back in the
90's. I'm trying to create a system that's easy to fix when it breaks. I
find that's the real power of Linux over any other OS: It's easy to fix
when it breaks.
Oh, and backup will be to an external USB drive using BackupPC, with the
drive regularly swapped off-site, plus an off-site rsync mirror.
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