Recently switched to GRT backups of Exchange 2010 and the speed of the backup went from:
1:45 minutes @ 1,450 mb/min with 100 - 110 gigs of data
7:15 minutes @ 273 mb/min with 100 - 110 gigs of data
Exchange version is 14.0722.000
B2D folder is on a Dell Power Vault MD3220i SAN Raid 10 (8 500g 7200k inline sas)
I would expect some additional slowing for additional processing of GRT info for item level restores, but this is unacceptable.
I did some searches and it seems that there are many others with the same problem…