Dan Langille schrieb: > There was a recent discussion of hardware versus software compression. > In general, I recommend hardware compression, unless your software can > keep up with your tape drive. > > Is all hardware compression compatible? > > Given a tape containing compressed data, can it be restored using any > compatible tape from from any manufacturer? In short, is all > compression equal and reversible?
I think the Data Compression method (LTO-DC) is part of the LTO spec. So all drives should be able to read the tapes... http://www.ultriumlto.com/faq.htm Q12: What are the backward compatibility characteristics of the Ultrium format? A12: The Ultrium LTO compatibility is defined with two concepts demonstrating investment protection: 1) An Ultrium drive is expected to read data from a cartridge in its own generation and at least the two prior generations. 2) An Ultrium drive is expected to write data to a cartridge in its own generation and to a cartridge from the immediate prior generation in the prior generation format. For example: - An Ultrium format Generation 3 drive will read and write data on an Ultrium format Generation 2 cartridge as specified by the Generation 2 format and read data on an Ultrium format Generation 1 drive. - An Ultrium format Generation 2 drive will read and write data on an Ultrium format Generation 1 cartridge as specified by the Generation 1 format. Ralf ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
