As our virtual infrastructure keeps growing with more virtual servers I've noticed that our backup job (both weekly and daily) has grown to the point where I have no maintenance window left to patch servers before people arrive to work. We do backups to a tape library with LTO3, wich seems to perform pretty spiffy when doing sequential writes.
Investigating the backup log concludes that the System State backup on each server (mostly Windows 2008) is taking a tremendous amount of time per server (~45 minutes).
I was using a split backup configuration with full backup on weekends (starting friday afternoon) and differential on weekdays (mon-thu). Tried changing it to incremental, but it did not reduce the backup time window - so I guess system state is a full backup no matter what you do.
The question now is what I'm going to do to counter this.
- Should I cut down system state backups to all servers on weekends, 1 domain controller daily?
- Backup Exec 2010 has a new de-duplication option when doing backup-to-disk. Will this help at all when doing system state?
- This is a VMWare vSphere infrastructure. Should I start looking at snapshot products instead of using system state backup?
- We have Trend Micro antivirus installed on all servers. Should I uninstall it, or configure it so it does not affect the backup?