Backup of MS Cluster with RDM disks

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Backup of MS Cluster with RDM disks

Veeam Logoby stergakis » Mon Jul 04, 2016 12:55 pm 1 person likes this post

Hi, We are in the process of making a Microsoft SQL failover cluster. The cluster will consists of 2 VMs (SRV01 and SRV02) with Server 2012R2 in an VMware 5.5 U3b environment.
We want to do this with RDM disks mapped to our SAN. How do we do this so VEEAM supports backup of the Cluster?


So far I have mapped 2 vRDM disks on SRV01 and added the 2 existing virtual disks on SRV02 (pointed to the VMDKs of SRV01)
The controllers are set to "virtual" bus sharing.

I keep getting error:

7/4/2016 2:35:50 PM :: Task failed. Error: Cannot process SRV01 (vm-102280): SCSI controller engaged in bus-sharing is present

Kind regards Michael Stergakis
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Re: Backup of MS Cluster with RDM disks

Veeam Logoby chrisdearden » Mon Jul 04, 2016 2:16 pm

you can't snapshot VM's with SCSI controllers in bus sharing mode , so you can't back them up via VADP. ( this is a Vmware limitiation )
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Re: Backup of MS Cluster with RDM disks

Veeam Logoby stergakis » Tue Jul 05, 2016 7:16 am

Hi Chris,

Thanks. I guess our only option is to go physical.
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Re: Backup of MS Cluster with RDM disks

Veeam Logoby Vitaliy S. » Wed Jul 06, 2016 12:10 pm

...or you can consider using SQL Always ON configuration which does not require bus sharing. Thanks!
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Re: Backup of MS Cluster with RDM disks

Veeam Logoby sbjelkfelt » Thu Jul 07, 2016 8:12 am

We used to have a similar setup - we ended up using Veeam Endpoint to do a full backup on both machines. One of the jobs would fail everyday (the passive node) though so it's not a pretty solution, but it works.
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