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DFSr seeding - 9TB

Posted on 2013-10-24
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Last Modified: 2013-10-30
Currently we have 2 virtual file servers hosted in different physical locations.
They are running Windows 2008 R2 in full mesh DFSr.
There is approx. 9TB of data on each of the servers.

We are going to be relocating one of the sites which will require taking one file server offline for a week or so. Because of redundancy and resource requirements to support all of the users, we need to build a third file server in the data centre that is not relocating and add it to the DFSr group.

What is the best way to get the 9TB of data pre-seeded on this server?
The backup tool being used is Commvault.

Can we just use Commvault to restore the folders/files to the new server and then configure DFSr?
All methods I have seen use either robocopy or ntbackup. Nothing mentions third party backup suites, though I would've thought that would be the same as ntbackup?

In the past I have always used robocopy myself, but that was only for transfers less than 100GB. This restoration/copy is going to take days to complete so I want to find the fastest and most effective method.
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Question by:lltc78
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by:lindento
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Hi,

will the pre seeding take place inside the local LAN?

Do you have a separate dedicated network for backup? If not i would just go the robocopy route as there is no time savings included here.

If you want to use backup to restore, you should be able to use Commvault as long as it is a complete restore with all sid,structures etc intact. You can always do a small test setup to test the settings.

Best Regards
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by:lltc78
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Hi lindento.

Yeah it will take place on the same LAN so there will be the 1gb ethernet link.
There isn't a dedicated backup network however that isn't too much of a concern since the new server will not have any traffic to it until DFSr is running. So if using backup it will be direct path from the backup storage.

As for robocopy, this would impact the resources used on the source server right?

Will using either method will be as quick as each other?
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lindento earned 500 total points
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Hi,

yes robocopy will impact the resources on the source server.

For the time requirements it will be around the same as i guess your backup server will still do backups while the restore is happening, but in either case the data size has to go through the wire.

If you run r2 enterprise on all the dfsr servers just letting dfsr do its job also might be an option as starting with 2008 r2 enterprise remote differential compression is enabled by default which will compress the data transferred over the wire.

If the data is not compressed and optimal network utilization is expected i would guess the data can be transferred in 24-48 hours on a gigabit network.

Best Regards
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by:lltc78
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Thanks lindento. We will restore from backup to seed the new server before adding it to dfsr.
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