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MSL 6030 - write to tape problem

Branislav Kopun
Occasional Advisor

MSL 6030 - write to tape problem

Hello,

I have MSL 6030 with Ultrium 960 tape drive connected with server(SCSI controller - LSI Ultra320 SCSI 2000) through SCSI.
I have problem to write to LTO tape with compress ratio 2:1(I/O device error). When I ran this test(LTT->Dev Perf) with 3:1 compression test went ok. I think that this makes problems under backup software Brightstor 11.5. When I want to backup file with size 20MB it goes ok, but when I want to write 400MB file it will crash after 13%(unable to write to media). I think that this is tape drive problem not backup software problem.

Do you have any idea?

Many thanks
Branislav
4 REPLIES
Uli Böhm
Frequent Advisor

Re: MSL 6030 - write to tape problem

Hi,
do you use the internal SCSI Controller of the server? Is the termination on the drives or at the library controller?
Marino Meloni_1
Honored Contributor

Re: MSL 6030 - write to tape problem

I had some cases where this happened, and it all the components of the scsi chain are ok, the i/o error was solved changing the connection on the back of the library
from the standard HBA >> LTODrive >> RobotController >>> Terminator
to this way: HBA >> RobotController >> LTODrive >>>Terminator

I mean put the end of the scsi chain with the terminator on LTO cannister


Marino
Branislav Kopun
Occasional Advisor

Re: MSL 6030 - write to tape problem

Hi,

I've solved it according to your advices. I've changed the connection(termination on drive) on the back of the library.

Many thanks,
Branislav
Branislav Kopun
Occasional Advisor

Re: MSL 6030 - write to tape problem

n/a