Vicki Stanfield wrote:
I am setting up to transition an existing Amanda config on a Debian
Woody Linux system with one drive to a two drive setup. I have been

Use the chg-multi changer: it emulates a tape changer using two or more tape drives.


trying to research this and have come up with what I believe is the
correct amanda config:


<SNIP> tapedev "/dev/nst{1,2},2}" # the non-rewinding device to write

What's that???



tapes

<SNIP>
# our tape definition
define tapetype HP-C5683Ax2 {
        comment "DDS-4 DAT tape"
        length 16584 mbytes
        filemark 452 kbytes
        speed 2613 kbytes
<SNIP>

I also believe you have hardware compression on, together with software compression. A capacity of about 16 Gbyte instead of a little lower than 20 Gbyte is typical for those setups. Doing hard+soft compression results in a lower tapecapacity for most drives (all except LTO drives, AFAIK).

Disable hardware compression. Search the list for how to do this,
as this has been discussed numerous times here.


> While I believe that this setup is correct, ...

I would be amazed that amcheck did not complain :-)




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