Forum Discussion

sanhun's avatar
sanhun
Level 3
13 years ago

slow Exchange GRT restore

dear community, i found many topics already about the problem with slow GRT restore, and i fear there is no solution to the problem, but as every case different, i share my problem - maybe there is...
2010
Backup and Recovery
Backup Exec
  • CraigV's avatar
    CraigV
    13 years ago

    Your speeds would be a lot better if you had a full SAN environment with SAN SSO in place for instance. Your servers being backed up would have access to the SAN and the library (assuming it was SAN-attached), giving you SAN speed for restores/backups.

    That said, you need to take into account network speed, type of disk restoring/duplicating too, the amount of data as well as the type of data, and whether or not you have an AV that might be scanning your details.

    Typically I am getting anything from 1.5GB/m to 4-5GB/min when duplicating backups.

    So start by checking to see whether or not your AV is scanning the BE services on your media server and the target server, and if so, exclude them.

    Thanks!

sanhun's avatar
sanhun
Level 3
13 years ago

Thank You Craig,

i made the following tests:

- backup job: Exchange --> tape with GRT without AOFO = 2488MB / min (see tape.pdf)

- backup job: Exchange --> disk with GRT without AOFO = 200MB / min (see disk.pdf)

- restore job: tape with GRT --> Exchange = 200MB / min

- duplicate job: tape with GRT --> disk = 200MB / min

 

some tries without GRT:

- backup job: Exchange --> tape without GRT = 2600MB / min

- backup job: Exchange --> disk without GRT without AOFO = 4400MB / min (over the network to the backup server)

 

So after all, there is no any difference if i turn on\off the AOFO, but turning off GRT dramatically fasten the job.

I attach here two documents about the settings of the backup jobs, maybe you can point to something what i doin' wrong.

 

So if my numbers are confusing, my problem is:

- if i backup to tape with GRT, the backup is fast, but restore\duplicate is damn slow

- if i backup to disk with GRT, the backup is already damn slow

 

Okay i am dumb for the exchange \ backupexec in this deep, but as i understood the method of the GRT, there is a step what making "GRT" from a single backup process: if i backup to tape, this step made only at the restore, and if i backup to disk, this step is made during the backup process. As far as i got it, its because some dynamic image making, what is not possible to directly to tape, so is created at exchange-disk; tape-restore; tape-disk times. This things are slow for me. Looks like some process is slow what the backupexec software doing with the GRT.

I cant recognize what is this step, because i cannot follow the "Understanding GRT Backup and Restore functionality in Symantec Backup Exec" article step-to-step.