If you have a lot of data to move, you could be looking at either hours or days of downtime. The migration tool has the advantage of moving all mailboxes simultaneously, but it has the downside that both the source and destination Zimbra servers must be taken offline while the migration is in process. With the migration tool, it is necessary to shut down the old Zimbra server, run the migration tool to copy all of the mailbox data in one shot, then restore it to the new Zimbra 9 server. The Zextras migration tool is an option for upgrading to Zimbra 9, but it works differently than the incremental (side-by-side) migration described in my last post in this topic. I have been told by Synacor employees that Zimbra 9 has about 85% of the same code base as Zimbra 9, so I think this means the Zextras migration tool will work with Zimbra 9 too. It's free for 30 days.īut I haven't read any statement from them regarding Z9 compatibility yet. Maxxer wrote:The best so far migration method has been ZeXtras migration tool for long time. It is also very easy to roll back in case something goes wrong, as you need only reverse the change made in step 5 to revert users back to their 8.8.15 mailboxes. The benefit of this approach is that it is minimally disruptive to each mailbox user, and there is no downtime, so new inbound messages do not bounce while the upgrade is in process. This is just a brief list of the overall process, so you will want to check the Zimbra Administration documentation for more details, but it should get you started down the right path. This picks up all incremental mailbox changes since the initial backup was run in step 2.ħ.) From your Zimbra 9 server, run: "zxsuite backup doExternalRestore /path/to/your/backups domains " to restore the mailbox data for all mailboxes. This doesn't restore existing mailbox data, but does provision all of the mailboxes on the Zimbra 9 system, so users can at least login to those empty mailboxes.ĥ.) Update the DNS records for so that new email is delivered to your Zimbra 9 server, and your users begin checking their Zimbra 9 mailbox for new mail.Ħ.) From your 8.8.15 server, run another SmartScan backup for the mailboxes. From the command line, run: "zxsuite backup doExternalRestore /path/to/your/backups domains provisioning_only TRUE" (replacing "" with the domain you want to migrate. Fix any problems found.Ģ.) From your 8.8.15 server, create an NG Backup (provided by Zextras) of all of your mailboxes to a network location (NFS, SMB, etc.).ģ.) Install Zimbra 9 on a new server, and modify any default settings, as needed.Ĥ.) Make the shared network location (NFS, SMB, etc.) available to the Zimbra 9 server. To briefly summarize the process, you would:ġ.) From your 8.8.15 server, install the latest patches, perform an integrity check of your MariaDB database and perform a blob check of all mailboxes. It looks like someone started a Wiki article about it here, but didn't finish. It is the safest and most reliable option for pulling in all existing mailbox data, while adopting the default settings that ship with Zimbra. Normally, an in-place upgrade from 8.8.15 to 9.0 should work fine, but if you want a clean start, consider using a side-by-side migration. O How to migrate all mailboxes, distribution list. O How to migrate all the configurations of my Zimbra 8.8.15 Installation ? I upgrade my zimbra 8.8.15 NE Ubuntu 16.04 installation since years and I like to make a clean new start of my zimbra server with zimbra 9
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