Very Slow VM Backups
We are currently using Network based VM backups rather than SAN based, the Backup Host is a Windows 2008 server running NBU220.127.116.11 and has full access to the ESX servers, I have several policies set up including VIP's for covering the VM's.
The back bone is a 1Gb LAN, the Backup Host is SAN attached to an HP VLS12000 which is emulating LTO4 drives, this is on 4Gb F/C
When backing up the VM's I am only seeing on average 1.5M/s throughput, we have standard clients that are using the conventional NBU method whuch reach over 40M/s through the same medium.
Just wondered if there were any tuning or other paramaters that we need to look at with the VM backups to speed them up.