Tape copy from MPE/ix

[Alan Riggs]

I have some DLT tapes that were made on an HP 3000/MPE machine using roadrunner. What I need to do is simply produce copies ofm the tapes. Unfortunately, dd does not seem to be able to "see" the data. I have tried all standard block sizes from 128 to 4096 without success.

Any hints from the gurus.

[Helen French]

Hi Alan,

Check this out:

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=5441df8e01f90b6921/screen=ckiDisplayDocument?docId=200000058694660

HTH,
Shiju

[Alan Riggs]

Thanks. Unfortunately, that document points to an MPE command that can copy tapes in various formats (including tar). What I need is an HP-UX command that can handle the tape format made by roadrunner on the 3000.

[A. Clay Stephenson]

Alan, I can't spell MPE but is it possible that you are overlooking the obvious. Was the MPE box a DLT7000/DLT8000 and you are trying to read the tape using a lesser drive (e.g. DLT4000) ?

[Alan Riggs]

Afraid not, Clay. Tape was made on a DLT4000. I am trying to read it on a DLT7000 and copy to another DLT4000.

[Helen French]

Hi Alan,

Check this document too. This says about different block sizes and the limitation:

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=5eb64a1718ac50eecc/screen=ckiDisplayDocument?docId=200000048086788

HTH,
Shiju