Change the drives block size to variable, this can be done through
smit or to save time through the command line while logged in as
At the # prompt type the following:
tctl -f /dev/tape status (press enter)
(NOTE: tape is your tape device, usually rmt0).
Write down the block size number, to return your drive to this value.
This number is usually 0, 512 or 1024. We will use 512 for our
To set your tape device to a variable block size type:
chdev -l 'rmt0' -a block_size='0'(press enter)
When complete, you should see 'rmt0 changed'. Then install your
BackupEDGE product per the installation instructions. Upon a
completed installation, return your device back to the block size you
wrote down earlier. This is accomplished by the following:
chdev -l 'rmt0' -a block_size='512' (press enter)