Old version of 0dlttape.sys installed
Hi,
Problem: After replacing a BNCHMARK 1 DLT 1 with a new HP DLT VS160 I'm having issues with performance. Average is about 35 MB/min, the old tape drive managed 95MB/min.
I installed tape drivers with BackupExecTapeDeviceDriverInstall_273853.exe (and did a reboot). After having issues with performance I searched on google and found that Alex S�rensen had similar issues that I'm having.
http://forums1.itrc.hp.com/service/forums/bizsuppo...
http://forums.veritas.com/discussions/thread.jspa?...
Then I checked the version of the installed 0dlttape.sys and found out that it is 5.0.1. Then I unpacked BackupExecTapeDeviceDriverInstall_273853.exe and extracted all the tape drivers. I found that there are atleast two diffrent versions (5.0.1, 5.1.1.1) and that I have got the old one installed.
Is there an easy way to force installation of 5.1.1.1 0dlttape.sys device driver?
Comments
Try running tapeinst.exe, and telling it to install your Veritas drivers. I had similar issues, and doing this installed the more recent version.
Thanks for the responce. I just copied the newer 0dlttape.sys into C:\WINDOWS\SYSTEM32\DRIVERS and that worked.
I still had same bad performance though. After some debuggning I discovered that the tape drive was working well with HP's tape drive tool which messured about 7 MB/s.
The problem had to be in Backup Exec, so I checked the settings for the tape device. Since I have had a similar DLT tape device it seem to have kept the settings for the old DLT 1 drive which wrote 32K blocks and this new wants 64K blocks at minimum. Clicked "default settings" and block size went to 64K, ran the job and it performed 500 MB/min. Problem solved, total showstopper. :)
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