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Greetings,
Need to move a DPM server to new hardware including a Tape Library autoloader.
I was thinking :
If that all works and I need to restore from the old DPM server (disk restore) can I until the new server has built up the new Disk backups..
As ever tips appreciated
"Reconnect any other storage"
One more question, the old DPM server has local (RAID) storage for the short term disk backups, the physical RAID can't be moved to the new server
Can I migrate the stort term to disk backups also to the new DPM server ?
If it's a local RAID then it gets tricky, as you cannot migrate the storage from one server to another.
What I would do (if possible) is to connect a non-local storage (SAN/iSCSI) to your current DPM server, migrate the DPM backup storage to the non-local storage, then you could simply attach the non-local storage to your new server once you shutdown your old DPM server.
https://techcommunity.microsoft.com/t5/system-center-blog/sc-2016-dpm-ur4-migrate-backup-storage-in-3-simple-steps/ba-p/351842
(Applies to DPM 2019 as well)
Leon, sorry that's a no go, (good idea for another migration though..)
The backup to disk storage on both old and new servers is local.
I haven't got external iSCSi storage to swing the backups (in this enviroment)
Could I build the new DPM server (as completly new, so new SQL and DPM)
Repoint the DPM agents from old to new servers
Move Tape library to new and Inventory
Delete the Protection Groups from old (but keep the backups) Re-create on new..
If I then needed to could I still disk restore from the old DPM to a client...
When new DPM has build the required protection level of Disk backups, decomission the old DPM server ?
If you cannot migrate your local disk storage, then you will have to let them go.
So yes you will need to rebuild your protection groups from scratch, you will also need to re-attach your current DPM agents to your new DPM server.
It should work if you simply keep your old DPM server shut down, let the new DPM server take some weeks of disk backups and once that is done you should be OK to decommission your old DPM server.
If you're not using any domain accounts for your old DPM server, you can simply disconnect it from the network and still keep it running.
So I can't restore then from the old DPM server (data) in any way ?
The customer would be left with no backps history for some weeks...(apart from long term backup to tape)
With local storage I'm afraid not, the old backups can be accessible though if required as long as you don't delete/decommission your old DPM server.
" the old backups can be accessible though if required as long as you don't delete/decommission your old DPM server.
Thats what I meant if I keep the old DPM server running, for as long as it take to build up the new DPM server disk to disk backups
Can I still restore from the old DPM server ?
I presume I would have to manually attach the DPM agent back to the target but it would be a way forward..?
Yes you can restore but as you said, it requires you to re-attach the DPM protected server to the old DPM server again.
While backups are quite seldom required, a few weeks should pass quite quickly and you should be fully working on your new DPM server.
OK understood, thanks for your assistance
Hi @Pompy George ,
The best way to do this is to simply:
There's no need to remove any protection group really, but if you feel like you want to do that, feel free to.
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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Best regards,
Leon
Leon,
Thanks you.
These steps :
Backup the DPM database
Copy the DPM database backup to the new server
I presume you mean use the old DPM server
Shutdown the old DPM server
Restore the DPM database on the new server
How do restore as at that time I don't have working DPM ?
Or should thes two steps be swapped ?
Restore the DPM database on the new server
Install DPM 2019 + eventual Update Rollups (must be the same version), choose existing database
Yes, shutdown the old DPM server.
You will perform a simple restore/attach of the SQL database (DPM database) with for example SQL Management Studio (SSMS), once the database is there, the DPM installation can find it and you can choose existing database.
I also forgot to mention that if you do perform this method, you will need to use the SAME hostname for your new server (IP can be different).
Hey Leon,
So it looks like :
Install a new Windows Server - new IP address but same server host name as old DPM server
Fully patch the server
Install SQL Server with updates (must be the same version as the old DPM server)
On the old DPM server cancel all pending scheduled backup jobs and wait for running jobs to complete
On the old DPM server Backup the DPM database - Using SQL Mgmt Tools
Copy the backup of the DPM database backup to the new server
Shutdown the old DPM server
Restore the DPM database on the new server using SQL Mgmt Tools
Install DPM 2019 + eventual Update Rollups (must be the same version), choose existing SQL database
Reconnect the tape library and import/re-inventory the tapes
Reconnect any other storage
Run the following command: DPMSync -Sync
Open the DPM console and check agent communications and make sure DPM storage pool disks look good- then run consistency checks on all data sources.
Yep that's correct.
OK thank you I will give it a go and let you know
"OK tack, jag ger det en chans och meddelar dig" :-)
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@Leon laude Firstly, thanks for the response. It is helpful. Couple of follow up questions:
Looping in @SadiqhAhmed-MSFT and @Anonymous @Amardeep Saini for wider reach.