On Sat, 9 Apr 2005, Arno Lehmann wrote:
It works for me... In your case, relying on pools might be more useful. After all, at baculas current state, you need some difference between tapes in the changers, and relying on MediaType is worse than Pool, if your drives do accept the same Media...
I have been wondering about a specific situation which is likely to crop up here shortly:
Mixed LTO3 and LTO2 drives in the same robot (various reasons, mainly budgetary . I can't get all drives changed out at once while expanding the existing robot's slots and adding drives, but there's no point in staying with LTO2 drives while increasing capacity)
LTO3 drives can read/write LTO3 and LTO2 tapes. but LTO2 drives can only read/write LTO2 tapes.
This isn't just a possibility in the LTO world - SDLT, AIT, DDS, SAIT, etc all have similar issues as media capacity scales up. Being able to handle this in backup software would be a big plus.
As a thought, can this be done with a new drive configuration directive or extending the existing Media Type directive in bacula-sd.conf?
Eg:
Media Type = LTO LTO-2 LTO-3
OR
Media Type Read = LTO LTO2 LTO3 Media Type Write = LTO2, LTO3
The hassle with this is that it will need some extra logic when creating/labelling volumes, especially when there may be mixed media types in a pool during a migration phase, etc.
AB
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