Netbackup Verify media
Running Netbackup 126.96.36.199 on Solaris 10 SPARC/X86
We have LTO4 tape drives in a SL48 robot and they're supposed to read after write if I'm correct. eg. it will verify on the fly.
Now, we do normal backups and they just do fine without any write errors.
After the backup is done we run a verify on the tapes and they seem to fail a couple of times a week now.
Verify has run without any errors for some years now, with the occasional error now and then, maybe 4 times a year..
The tapes are actually a bit old now, going up to 250 mounts and are 4 years old.
When I been in contact with Symantec support (for totaly other reasons) it seems that "nobody does verify anymore",
So I'm sort of curios which one to blame here.
1. The tape drive?
2. The tapes are old and needs replacement
3. The LTO 4 read after write technology is not working properly.
4. The verify is not good enough, it doesn't read properly.
Any insight ideas and where I should start looking?