On 2008-11-05 17:53, rory_f wrote:
Um, haha. its all on the same machine. i dont think thats the case.
> Im actually finishing up a backing up a 6tb project right now using
> tape_splitsize, and perhaps from now on i wont use it. we have a
> system in place to breakdown folder sizes for our whole file system
> here, so using just single tapes and doing root-tar whilst figuring
> out tape capacities ourself isnt actually out of the question.
I'm not sure if I misunderstood you, just to be sure you understand me...
These two concepts are orthogonal:
- Amanda can use multiple tapes for one backup run.
- Amanda can split one backup image over multiple tapes.
It is only the second feature using the "tape_splitsize" parameter that makes
restores more difficult.
See: http://wiki.zmanda.com/index.php/How_To:Split_Dumps_Across_Tapes
But instead of dumping one enourmous DLE in one backup image, you can use
the include/exclude options with gnutar to split the DLE into smaller ones,
each fitting on a tape.
See: http://wiki.zmanda.com/index.php/How_To:Split_DLEs_With_Exclude_Lists
Figuring out tapecapacity and optimizing tape usage is handled with the
parameter "taperalgo largestfit", as explained here:
http://wiki.zmanda.com/index.php/How_To:Fill_tapes_to_100%25
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