We have several 2012R2 datacenter Hyper-V hosts with several CSV's to a HP 3PAR FC SAN, managed with SCVMM 2012R2 and backed up with DPM 2012R2. We have been running fine and doing backups with agents in each VM.
All hosts are regularly updated with Cluster Aware Updating.
Recently I thought I'd set up Hyper-V host backups because I hope it will make DPM easier to manage, and I believe it uses far less bandwidth and I/O's. Initially, I selected about 15 vm's to backup from the cluster node in DPM. This managed to crash 2 hosts and I've searched everywhere for a solution. One link suggested it is a 3PAR ODX issue, but I disabled ODX by this:
All hosts are regularly updated with Cluster Aware Updating.
Recently I thought I'd set up Hyper-V host backups because I hope it will make DPM easier to manage, and I believe it uses far less bandwidth and I/O's. Initially, I selected about 15 vm's to backup from the cluster node in DPM. This managed to crash 2 hosts and I've searched everywhere for a solution. One link suggested it is a 3PAR ODX issue, but I disabled ODX by this:
http://flemmingriis.com/dpm-2012-r2-windows-server-2012-r2-disable-odx/ and the issue persists.
Specifically, the error is: Event 1 VDS Basic Provider, Unexpected failure. Error code: 48F@01000003.
These occur several times then the CSV goes offline and all the VM's crash. Needless to say, this is catastrophic and a bullet proof solution needs to be found.
I'd appreciate any help :)