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Tuesday, 17 January 2012

VNXe NDMP backup Issue

Hi everyone,

I’ve been working with a client installing a VNXe for them along with VMware with Veeam backing up the VMware and Backup exec backing up the file shares on the VNXe and archiving backups to tape.

The setup is a pretty standard one with cisco switches and HP servers, but we ran into a problem when backing up the file shares on the VNXe (using NDMP) which backup exec, where the Backup Exec server would randomly skip a share or two one evening, and then skip a completely different one the following evening. The error that we were getting back was that the VNXe either could not be contacted or that a connection was refused.

The setup of the server was a HP network team in active / active (giving 2 Gbps) and two ports teamed on the VNXe for CIFS. The issues was raised with EMC, and it transpires, that this problem is caused by the HP network team and as soon as this was changed to NFT (active / passive), then the problem went away.

If I get the opportunity, I would like to test this with an Intel network team so see if it is vendor specific, but certainly something that you all might encounter.

Thanks for reading.