Am 14.05.20 um 07:59 schrieb Jens Berg: > There was a discussion back in 2014 with subject "Backups to tape > consistently under 60% tape capacity". I haven't read the whole lengthy > thread but one participant mentioned that in his case a bad cleaning > tape was found to be responsible for the capacity loss. Others reported > that they had trouble with the compression settings. My gut feeling > tells me that this is not the problem here but maybe your impression is > a different one or you get a new idea if you read through the postings.
Thanks for the pointer. Interesting, how can a "dirty" drive trigger this behavior? I'd expect failures all along and not after ~200 or 300 GB written. I don't see any interrupted writing or so (until that End Of Tape). But it's worth a try, the customer for sure hasn't used the cleaning tape for years.
