LTO tape drives, from their very first generation, offer hardware compression that, theoretically, allows a maximum of 2 - 2.5x the rated data capacity of each cartridge to be stored, with only a slight penalty to read/write rates.
I'm having difficulty finding out what algorithm this hardware compression uses, and what its characteristics are. Specifically, what I'd like to know is:
- Is this compression based on a standard algorithm (DEFLATE/bzip/gzip/etc)?
- How is it operating on the incoming data (blocks/files/streams)?
- Are these characteristics identical across tape standard generations, hardware vendors, or individual drives?