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SUN C5683A (HP Rebrand) DDS4 Tape drive not giving 20GB Capacity
I have a SUN C5683A DDS4 Tape drive in a RedHat Linux 9.0 Environment. Since SUN has rebranded this HP drive, I opened it up and changed the DIP switch to the Linux configuration. After that, and mt -f /dev/nst0 status command returns the format to be DDS4 (which it wasn't doing before). I am backing up files using the following sequence of commands
mt -f /dev/nst0 rewind
mt -f /dev/nst0 setblk 0
tar -b 128 -cvf /dev/nst0 files
This seems to ALWAYS yield a little over 17.2 GB.
I CANNOT figure out for the life of me why Im not getting the supposed 20GB of DDS4.
Compression would be nice to get nearer to 40GB storage... but for now Im concerned with why I cannot get the uncompressed 20GB capacity of DDS4. Anyways, the files I am backing up are not very compressible.
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by: andyalderPosted on 2004-06-29 at 06:54:03ID: 11426011
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