Exchange backup very slow
Hi, my master and media servers are all NBU 7.1 on Windows 2008 R2 SP1. I have 2 Exchange mailbox servers (NBU 7.1, Exchange 2010, Windows 2008 R2 SP1). Both mailbox servers are media servers and connected to FC LTO4 tape drives. We back up DAG DBs (no GRT backups). The size of full backups is about 1.5TB and it takes around 14 hrs to complete. We think the backups run too slow. The avg throughtput for FC LTO4 tape drive should be around 80MB/s. We expect the backups should be 200GB+ per hour. Now it is only around 100GB per hour.
Is there any way to improve the backup performance? Thanks in advance.