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StorageWorks 8505 8mm Cartridge Tape Drive
D–2 Order Nu
Example:
# lsdev –Cc tape
Name Status Location Description
rmt0 Available 00–03–00–50 Other SCSI Tape Drive
Next, type:
# chdev –l <rmt*> –a density_set_1=<DENSITY_1> –a density_set_2=<DENSITY_2>
Example:
# chdev –l rmt0 –a density_set_1=140 –a density_set_2=20
rmt0 changed
Finally, type the following:
# chdev –l <rmt*> –a block_size=<SIZE>
Example:
# chdev –l rmt0 –a block_size=1024
rmt0 changed
where,
<rmt*> is the tape drive added as shown by the lsdev command.
<SIZE> is the fixed block size (0 = variable, 1024 is suggested).
<DENSITY_1> (140 suggested) and DENSITY_2 (20 suggested).
Code Density Code Meanings
0 for EXB-8500, compression on, suppress density error checking.
20 for EXB-8200, density error checking enabled.
21 for EXB-8500, density error checking enabled.
127 for current density, suppress density error checking.
140 for EXB-8500, compression on, density error checking enabled.
144 for EXB-8200, compression on, density error checking enabled.
The files that are created are:
Tape Drive Special File Characteristics
Special File Name Rewind-on-Close Retention-on Open Bytes-per-Inch
/dev/rmt*
Yes No Density Setting # 1
/dev/rmt*.1
No No Density Setting # 1
/dev/rmt*.2
Yes Yes Density Setting # 1
/dev/rmt*.3
No Yes Density Setting # 1
/dev/rmt*.4
Yes No Density Setting # 2
/dev/rmt*.5
No No Density Setting # 2
/dev/rmt*.6
Yes Yes Density Setting # 2
/dev/rmt*.7
No Yes Density Setting # 2