>A) Can I multiply the length 3930 (4GB) by 2 (8GB)?
Yes.
>B) It will work fine?
Probably not.
What you're doing is telling the planning section of Amanda it will be
able to have 8 GBytes of storage on that single tape. If it actually
finds that much to do, it is unlikely the tape will really hold that much.
Most backup images (in my experience) only compresses 30-50%, i.e.
5-6 GBytes.
However this depends a lot on the particular data you are backing up.
If you are backing up large amounts of text, for instance, you may get
100% (8 GBytes) or more. If you're backing up compressed pictures,
you may not even get 4 GBytes (using hardware compression).
John R. Jackson, Technical Software Specialist, [EMAIL PROTECTED]
