Exchange GRT backup to disk takes very long time to finish
Using BE2010 R3 SP2 to backup my Exchange server to SATA disks (GRT).
When the backup was set to tape it took about 6 hours to complete. Now it takes up to 20 hours to complete. Out of the 20 hours, 6-7 hours are just for updating the catalogs.
The job rates to tape was around 800 MB/min and job rate to disk is around 280 MB/min.
Does it really make sense that it takes so much time? Is it al because of the SATA disks or is there anything else I can do to improve the backup duration?