Poor backup performance
I have moved to Symantec Backup Exec 2012 V-Ray edition for a while.
Although the backup does work in most cases, the performance is terrible.
I tried to play around with different options, but no matter what I do the performance is very poor.
This is a SB environment. BE is running on the Hyper-V host itself (2xXeon E5-2640, 48GB RAM)
I have measured all performance values during off-peak hours (weekends).
As an example to back up a virtual machine with Exchange 2010 and a total of 1,2TB of data:
No compression, no encryption, no GRT, no verify to local disk: 5 hours and 45 minutes
SW compressed, SW encrypted, with GRT enabled, verified to local disk: 34 hours and 12 minutes
I have measured local disk throughput performance and it is 5 GB/s, so that shouldn't be a problem.
As a countermeasure I have used Microsoft Server Backup (same machine, no changes):
No compression, no encryption, no GRT, no verify to local disk: 3 hours and 10 minutes
I have stopped the VM and used robocopy to create a copy of it to the same disk I use for backup.
This took me 2 hours and 7 minutes.
Why do BE need 80% more time to do the same backup on the same machine ?
Why does switching on all those functions increase the backup time by 500% ?
My biggest problem is that all backup jobs cannot finish in the timeframe (weekend) that is
available, while previously when I was running BE 12.0 on an older machine (to DLT tape) I
could do it without a problem.
Thanks for the community in advance!