I can run a full backup of my NE zimbra installation to a drive with no other full backups and it takes seven hours. All incremental backups after that take mere seconds to do. Zimbra tech explained to me that was because the incrementals basically copy the redo logs.
However, the redo logs don't include incoming/outgoing email between the time of the full backups and the time of the incremental, correct? I thought the redo logs only do message movements (between folders) and deletions, etc.
If this is the case, how would one ever do a full point in time recovery of person's email if there are incrementals involved.
In two years, I have had to only do one person's full recovery of their email account. I had a full backup plus 4 incrementals. Only the full backup had mail messages. After the full backup the person lost their subsequent incoming/outgoing.
Am I just completely wrong on the definition of an incremental backup? Aren't they supposed to have all incoming and outgoing messages/attachments that came in AFTER the last full backup?
If you could shed some light on this, it would be appreciated. Otherwise, I think I am goiing to bag the incremental backups for nightly full backups.