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List:       postfix-users
Subject:    Re: In the case of queue directory corruption
From:       wietse () porcupine ! org (Wietse Venema)
Date:       2006-07-26 15:28:06
Message-ID: 20060726152806.5AE76BC0B1 () spike ! porcupine ! org
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Mark Hellman:
> Wietse Venema wrote:
> 
> >> And a somewhat related question: apart from some in-transit emails, are
> >> the contents of the queue directory critical enough to deserve being on
> >> RAID or can I put them on a single disk partition?
> > 
> > It contains
> > 
> > - in-transit mail
> > 
> > - postfix-owned directories
> > 
> > - chroot support
> 
> Thank you, Wietse.
> If I understood you well, when Postfix is not running chrooted, the only
> thing that we loose when the queue directory disappears are the in-transit
> emails (because postfix-owned directories are re-created automatically later
> by the 'start' command).

Correct.

> If this is so, then I can get more performance by
> placing the queue on a non-RAID partition.

RAID performs fine with mail servers, as long as you provide a
large battery-backed memory cache. Otherwise write performance can
be worse than that of a single disk, the difference depending on
RAID type.

	Wietse
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