Toralf Lund wrote:
I'm thinking about using more than one tape, i.e. set "runtapes"
parameter to a value > 1, for my updated archival setup. Is there
anything special I need to keep in mind when doing this? Also, how do I
set up runspercycle in this case? Is it the total number of tapes
runspercycle * runtapes, or just runspercycle?
runspercycle does not need to be changed. The "runtapes" means that
for each run up to that number of tapes may be used (note: not "must").
You have to increase your tapecycle probably to cover the same
dumpcycle(s), because you'll burn twice as much tapes for each run.
(well, "burn", hopefully not litteraly).
The parameter "taperalgo largestfit" will help to fill the first
tape(s) to 100%. (New since amanda 2.4.3.)
This works better when also using:
dumporder "SSSSSS" # as many S's as you have dumpers
(or use "TTTTTT", which is a good approximation of SSSS, but optimises
the total runtime of your backups better; I use TTTTT).
For a complete explanation why this works better, see:
http://groups.yahoo.com/group/amanda-users/message/46327
--
Paul Bijnens, Xplanation Tel +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM Fax +32 16 397.512
http://www.xplanation.com/ email: Paul.Bijnens AT xplanation DOT com
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