Slow Backups on deduplication storage
I was previously using backup exec 2010 with a LTO3 tape library
Job rates were fairly good, around 3000 MB / Minute
I switched to Backup Exec 2012 and to deduplication and disk based storage.
I am actually using a brand new server with 24GB RAM a few processors and a HP StorageWorks array with sixteen 10K RPM disks in a raid 5.
Jobs rates now are most of times around 500 Mb / Minute which is really slow.
Sometimes, a single jobs may skyrocket to 2000 mb / Minutes, and sometimes I have got 3 jobs runnings at 100 MB / Minutes each
It is really strange as a file copy from network to array drive is copied up to 6000 or 7000 MB per minute
Why is it so slow?
I tried to disable checkpoint restart in each job, as I saw it may have performance effect on backup, but it did not changed anything