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Drive Cleaning/Calibration for C1537a

Joe Carella
Occasional Advisor

Drive Cleaning/Calibration for C1537a

We were getting I/O errors using DDS-2 tapes for daily differential backups. That problem was solved when I calibrated the drive using a DDS-2 tape.

Now I am getting hard errors doing full backups using DDS-3 tapes. Did I mess up?

Joe
7 REPLIES
Joe Carella
Occasional Advisor

Re: Drive Cleaning/Calibration for C1537a

Can anyone help with this?
Eugeny Brychkov
Honored Contributor

Re: Drive Cleaning/Calibration for C1537a

I'm not 100% sure, but guess that to recalibrate DDS3 drive's heads you had to use DDS3 tape, not DDS2. I did not find anything on it in the LTT help.
You can ask LTT team - ltt_team@hp.com
Eugeny
Joe Carella
Occasional Advisor

Re: Drive Cleaning/Calibration for C1537a

I tried to recalibrate with a DDS-3 cartidge but got a message "This drive has been recalibrated before - unable to proceed"
Eugeny Brychkov
Honored Contributor

Re: Drive Cleaning/Calibration for C1537a

Yes, drive can only be recalibrated once. Contact LTT team - maybe they will help you
Eugeny
Joe Carella
Occasional Advisor

Re: Drive Cleaning/Calibration for C1537a

I sent them an email but have not heard back. Does this mean that if no recalibration is possible, I am stuck using DDS-2 tapes?
Ronald Hendriks
Valued Contributor

Re: Drive Cleaning/Calibration for C1537a

Try upgrading the FW (or even when it is on revision, this clears the logs.) then you might be able to recallibrate.


Ron.
Keep things simple
Joe Carella
Occasional Advisor

Re: Drive Cleaning/Calibration for C1537a

Reloaded the firmware, same problem.

Joe