Am 04.08.22 um 10:08 schrieb Stefan G. Weichinger:

1) I would have to "split" a physical tape change into 2 logical changers:

12 tapes for "daily" runs (= storage 1)
12 tapes for "full-only" runs (= storage 2)

(How) would amanda handle that? As there is only one tape drive it would have to keep everything in the holding disk and write it 2 times sequentially to each tape(set).

I am working on 2 sites using multiple storages. One runs OK already using 2 changers in parallel.

The second one only has one tape library.

I define one changer using slots 1-4 (storage1) and the 2nd changer with slots 5-8 (storage2).

Both changers use the same and only tape drive ... that's why I need sequential processing.

I am unsure how to use that correctly.

My approach so far (not yet fully tested):

# daily cronjob

/usr/sbin/amdump config -ostorage=storage1

combined with

flush-threshold-dumped  200 # (or more)
flush-threshold-scheduled       200 # (or more)
taperflush      200
autoflush     yes

this should keep the holding disk files.

Now if I want to write these to storage2: do I run amdump or amflush?

(assuming I use "-o storage=storage2")

That second storage should be allowed to clear the written DLEs from the holdingdisk.

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