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06/28/2004 at 08:08PM PDT, ID: 21041301
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7.4

SUN C5683A (HP Rebrand) DDS4 Tape drive not giving 20GB Capacity

Asked by Flash828 in Hard Drives & Storage

Tags: c5683a, dds4, dip

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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[+][-]06/29/04 06:54 AM, ID: 11426011

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[+][-]09/08/04 09:40 AM, ID: 12008430

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About this solution

Zone: Hard Drives & Storage
Tags: c5683a, dds4, dip
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Solution Provided By: GhostMod
Participating Experts: 2
Solution Grade: A
 
 
 
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