Backup performance slow(and then suddenlyfast)
Hello All,
I have a backupexec15 server running on windows 2012 standard. This is a new setup. We are trying to backup a disk from SAN storage(zoned to BE server) to tape drives. A total of 3 LUNS from 2 different storage. The issue is sometimes the backup starts at very slow speed(~400-500 MB/min) and keeps that way till we cancel it. Once cancelled and restart job we get speed of ~8000 MB/min.
Any reason why just restarting a backup job makes such a big diffence? It happens randomly on any of the three LUNs. All the jobs for the three disks run at different times to prevent any storage cache contention. Antivirus is disabled for BE binaries. Server rebooted multiple times. Reinstalled BE one time. Only pending storage controller reboot.
Best regards..
There was one "slow" drive out of a total of 4 tape drives. Replaced it and the system works fine.
Best Regards...