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Backup woes

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by netwolf

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I just recently replaced my backup dlt tape drive. IT was a 15/30 originally and was upgraded to a 20/40. I am using Backup Exec v.8.5. My data transfer rate has dramatically fallen. Any ideas why?

11 replies

by d.walker5

You didn't say what OS, WinNT, Win2k, or Small business.

I do know the excessive drive fragmentation can adversely affect system performance by increasing the amount of time it takes to run a backup. Also, excessive drive fragmentation can causeBackup Exec agents such as the Open File Option to potentially fail when a backup job is launched. Is incremental backup performance slower than regular full or differential backup performance? If yes, defrag may solve your problem.

Hope this helps.

If Backup Exec is installed on an NT 4.0 Server, a third party utility such as Diskeeper should be installed to defragment the drive.
If the server has a Windows 2000 Operating System, the built in defragmentation utility should be used.
To defragment a Windows NT 4.0 or Windows 2000 server partition:

by tbragsda

Did you change the SCSI controler? How about the length of the cable? I have seen more problems with SCSI cable length in my lifetime that I ever cared to.

by carsten.holfelder

Hi, I had the same problem, I found this solution just by trail and error. I uninstalled the drivers supplied by Backup Exec. While uninstalling the Drivers I noticed a check box that said "Delete entries for Tape Devices that are not available". I had selected the check box during the uninstall and left it selected when I reinstalled the veritas drivers. I found that my backup speed had increased back to normal.

by assamite

The first query would be is the drive running the latest firmware and if not update it, are you running the correct drivers? did you remove the old device from the system fully before installing the new device? is the SCSI card you currently have installed upto the job of running the drive as I know some adaptec cards do not always work to full spec on some drives. Are you backing up locally or over a lan? Also have you installed the latest build of Veritas 8.5? Also is the server this is running on upto the spec of increased throughput? try monitoring CPU, Memory usage etc and see if your falling short somewhere. Have you tried a backup with NT backup and then the same files with veritas to see if this is a hardware / software related issue?

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