Mirror /var/spool

Julian Field mailscanner at ecs.soton.ac.uk
Sat May 31 13:18:14 IST 2003

Put /var/spool/MailScanner/incoming on tmpfs for speed. Certainly don't
mirror it.
If you aren't worried about losing your queues if a disk dies, then there's
no point in adding all the extra overhead of writing 2 copies of everything.

By the way, Sunfire V120 servers are pretty slow. I built one last week and
it's only just faster than an old Ultra 5. Very disappointing considering
the facts that it is 3 years newer and double the price!

At 12:56 31/05/2003, you wrote:
>   I'm setting up a new mail server (sunfire v120, solaris 9, sendmail,
>   mailscanner, spamassasin and mcafee)
>   I will be mirroring the /var/mail disk.  I was also planning on mirroring
>   all of the system drive (everything but /var/mail) but I'm wondering if
>   it makes sense to mirror /var/spool.  Would I be better off performance
>   wise if I make /var/spool a seperate file system and do not mirror it?
>   I don't really care about mirrored log files and don't think the lose
>   of the mail queues will be very drastic if I lose a drive.  I would think
>   that avoiding the multiple writes by not mirroring /var/spool would be
>   a plus.  This is software raid 1 which probably isn't as efficient as
>   hardware raid.
>   Thanks,   Tom Combs

Julian Field
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