Re: unable to open mailbox
On Tue, Jan 12, 2010 at 08:12:05PM -0500, Celejar wrote:
> On Tue, 12 Jan 2010 20:05:15 -0500
> Rob Owens <rowens@ptd.net> wrote:
>
> ...
>
> > Another benefit of maildir is if you use a backup program that does file
> > pooling (like BackupPC). Anytime an mbox changes, that's a new file to
> > backup (and usually a big one). With maildir, only the new messages
> > have to be backed up.
>
> But note that rsync based backup solutions do differential file backup,
> so only the changed / added portion of the mbox has to be copied and
> then merged, which mitigates this problem.
>
Yes, rsync will only transfer the changes. But if you are trying to
keep a history of backups (the last 7 daily backups, the last 10 weekly
backups, etc) then you use much more storage if you have mbox. Each
daily backup will hold the complete mbox. Whereas with maildir each
daily backup would only require the additional messages to be stored
(since the rest of the messages are presumably stored in the previous
daily backup).
-Rob
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