Hello, I had a question on Frozen media.

First, am I correct in saying that the criteria NetBackup uses to 
determine if it should freeze a tape is:

1) NetBackup detects Non-NetBackup data format (So data was written 
using straight Unix tar, pax, cpio, or a non-NetBackup commercial app 
like Tivoli or Networker)

2) NetBackup detects that there is NetBackup data on the tape, but it's 
catalog data, and so it freezes the tape to ensure that the catalog 
files aren't overwritten.

3) NetBackup tried to read/write to the tape and experienced more that 3 
read/write errors within a 12 hour span of time.

Assuming I'm correct so far, then is the proper method of 
troubleshooting Frozen media to:

1) Ensure there isn't some catalog data on the tape.

2) Ensure that the tapes aren't from some other commercial backup 
product environment's tape pool (for those of you running multiple 
commercial backup applications at a single site).

3) Make sure your tape drives have been cleaned recently.

4) Use bpmedia -m <media id> -unfreeze to unfreeze the tape(s), make a 
note of the tape you're unfreezing, and leave it in the scratch pool to 
see if it gets used for tonight's backups.

Now for my question: Assuming I was correct on my selection criteria and 
my troubleshooting steps, am I correct in saying that if I came in 
tomorrow and that media from step 4 was frozen a second time, that it 
indicates that the media is more than likely defective? Is there any 
other troubleshooting steps anyone would care to add?

Thanks.

- Heathe Kyle Yeakley
_______________________________________________
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu