Am 02.12.2013 18:47, schrieb Claus:
Hello,
i have to backup (tape library) a mailsystem with about 300.000 Mailboxes on 2 backends. Summary of all mailboxes are 2 TByte. The mailstore is mdbox. Is it save to do a simple filesystem backup (full and incremental) with backupsoftware?
hm i wouldnt do that with mdbox, cause it does strongly depends to index, but if you use dsync you could convert to maildir at backup, maildir should be fine to store on tape, but with 2 TB this is only good for total desaster archive, i guess it would take long time to restore specially single mailboxes in acceptable time, from tape Better use cheap sata storage raids for frequent backups, and do tape snapshots sometimes.
What is the prefered strategy to do a backup for desaster recovery (mailsystem crash) and restoring single usermailboxes?
dsync should do fine
http://wiki2.dovecot.org/Tools/Dsync
but there is no universal answer to this, perhaps filesystem snapshots strategy might better, it depened on your general setup , filesystems , mailstore etc.
wait for others report their solutions, and find the one fits best at your place
Regards, Claus
Best Regards MfG Robert Schetterer
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