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Comment by dylan604

8 months ago

I once wrote a DAM that wrote to LTO tapes just using tar. The tape was operated with forward/rewind commands from mt. Nobody needed access to the tapes until after I was no longer at the company. Apparently, they spent weeks trying to install various backup software to read the tapes, but none could. They eventually contacted me, but due to how much software they had tried to use the original computer it was attached to was no longer the OS. At that point, they asked 3rd party companies for help and eventually found someone with a drive attached to a Linux system. I was then able to walk them through how to read and extract data.

Tape storage can be an absolute nightmare. Most will do the writes, some will say they verify with a read, but few actually test with a full restore. Just because the software says it can read the tape to show you the listings does not mean it can read the files themselves. This was alluded to in TFA(TFV??) but been there done that on trying to read from a bum tape/bad write. It gets worse if you write in one tape drive and read from another also mentioned in TFV. Now I feel old just thinking about it all