LTO/ULtrium 230i and Win2K problem

[scatalinus]

My problem looks like this:
- I have a LTO/Ultrium 230 internal drive, installed in a Win2k Advanced Server Machine.
- I'm using HP OV Data Protector 5.10 as a back-up utility with 10 agents installed on some HP-UX and Linux servers.
- The SCSI configuration I've already checked it, and the only point where I'm not sure about the settings is in the SCSI Drive configration tool. I've tried the recommended 80MB/s and 20MB/s setting, and the problem stays.
- Finally the problem is that it cannot finish succesfully any session, in any configuration tested. The error I receive appears, as I guessed, randomly, and I couldn't find any potential cause for that.
The error is this:


"[Major] From: BMA@sededem.crescendo.ro "Ultrium" Time: 7/15/2003 9:58:17 PM
[90:51] Tape0:0:3:0C
Cannot write to device ([1117] The request could not be performed because of an I/O device error. )

[Major] From: BMA@sededem.crescendo.ro "Ultrium" Time: 7/15/2003 9:58:19 PM
[90:161] Cannot write filemark. (Details unknown.)"

In the same time in the Event Viewer I receive the folowing:

"The device, \Device\Scsi\adpu160m1, did not respond within the timeout period. "

Any hint is very welcomed!

[Vladimir Vybiral]

Hello,

this looks like a scsi problem / try to use the Library and Tape tools to do some diagnostics, check, scsi cables / and what adapter/driver version are You using?

Vladimir

[Eugeny Brychkov]

I've heard that LTO drive should have DP driver loaded (not native w2k driver). Please go to device manager, LTO properties and check driver.
Try checking drive with HP LTT http://h18006.www1.hp.com/products/storageworks/ltt/index.html
Eugeny

[scatalinus]

The problem is finally resolved, but in a very unexpected way. After I changed the driver for LTO drive, the driver for the adaptec scsi adapter, and made a bios update for the adapted scsi drive and also for the LTO drive, I found that the problem it's still there.


Then I've decides to change a different setting every day for my back-up. And suddenly, one day it worked: I've checked the software compression option for my back-up, even if in the manual the recomandation is not to. But it finally worked.

My opinion is that making a compresion on the client, helped in streaming data over a (maybe) busy network, and this way tape driver work finally well.

If somebody have a different one, please post it here.

Thank you for your time.