Zimbra backup strategy

CadilLACi

New Member
Sep 20, 2016
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Hi!

I am curious about Your experience with backing up Zimbra.

I do weekly snapshot backups of our Zimbra server, but never needed to restore until today. I rsync those one day later to offsite.

A colleague of mine ran into some trouble when a hardware error rendered his backup hdd useless and his zimbra installation faulted on LDAP inconsistency error, so I just want to make sure that my onsite-offsite backup strategy is sound.

So, what is your experience with restoring Zimbra?
Is snapshot backup enough?
Should I do a stop backup?
Or is it necessary to make a backup inside Zimbra?

Did anyone already restore any zimbra from proxmox backup? What is your experience with it?

thx

Laszlo
 

LnxBil

Well-Known Member
Feb 21, 2015
4,077
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Germany
A colleague of mine ran into some trouble when a hardware error rendered his backup hdd useless and his zimbra installation faulted on LDAP inconsistency error, so I just want to make sure that my onsite-offsite backup strategy is sound.
If you have better backups than your collegue, I guess you're fine. For a production setup, you need raided backups and additional off-site backups of your backups, so that a single hardware failure cannot render your backups useless. According to GDPR, this is required in the EU, so if you're EU-based, get a decent backup strategy.

Or is it necessary to make a backup inside Zimbra?
Zimbra does include a backup mechanism, have you tried that?

Is snapshot backup enough?
We run Zimbra directly on ZFS (the guest OS provides ZFS) and use that also for replication in addition to the Zimbra internal backup. With this, we have zimbra-internal backup for restore in zimbra and have everything also replicated to multiple sites. ZFS snapshots are done every 15 minutes, so that we have a very fine control of the machine.

We created a test environment on basis of these zfs snapshots which worked fine, but fortunately haven't run into any problems of Zimbra itself so that we needed to restore from backup. We seldomly have to restore some items from the zimbra internal backup - mostly for test purposes.
 

CadilLACi

New Member
Sep 20, 2016
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Thx, LnxBil!

The problem is, the guy is running Zimbra OSE (Open Source Edition). To get live backup capabilities, he would have to upgrade it to Zimbra Suite Plus at least.

That is why he asked me - i recommendend him proxmox to begin with - whether the proxmox built in snapshot (that is happening live) is enough or not.

I had restored Mysql servers from proxmox snapshot backups too, without any problems, but zimbra is kinda fickle. From my experience, it is much more affected by any interruptions then any other software I use. For example xfs file system ruins it - it is very sensitive to any file system errors - interruptions.

That is why I am asking about proxmox built-in backup.
 

czechsys

Member
Nov 18, 2015
157
4
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Never rely on the proxmox built-in backup for applications (only when file based). Anything with db needs its own application backup.
 

tom

Proxmox Staff Member
Staff member
Aug 29, 2006
13,673
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You can do backup in stop mode. This means, the VM is shutting down, start the backup process and starts again immediatly. so you have a short downtime (just the reboot time - a minute or a bit more), but the backup data is clean.
 

CadilLACi

New Member
Sep 20, 2016
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You can do backup in stop mode. This means, the VM is shutting down, start the backup process and starts again immediatly. so you have a short downtime (just the reboot time - a minute or a bit more), but the backup data is clean.
Thx! I' ll tell the guy to do that!
 

iMx

New Member
Feb 11, 2019
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I use Zextras for mine - yes, it is a paid for license, but very reasonably priced. Also gives migration tools, backup, and push email.
 

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