HP StorageWorks SDLT 320, Справочное руководство

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Operating System Device Drivers
10 SDLT Tape Drives Reference Guide
Turning Compression On
The following sections give 2 examples of turning on compression using the tar
command.
Example 1
An example to turn on compression using a tar command is:
$tar cvf /dev/tape/tape5_d? filename.txt
Where:
■
tape5 = the tape device as known by the system (shown in the file command,
in this case, tape unit 5).
■ ? = 0, 2, 4 or 6 will turn hardware compression off (see the SDLT drive
description in the ddr.dbase file online).
■ ? = 1, 3, 5 or 7 will turn hardware compression on.
Example 2
Another example to turn on compression using a tar command is:
$tar cvf /dev/tape/tape5c filename.txt
Where:
■ tape5 = the tape device as known by the system (shown in the file command,
in this case, tape unit 5).
■
c = compression on.
Turning Compression Off
The following command turns hardware compression off:
$tar cvf /dev/tape/tape5 filename.txt
For the latest UNIX patches refer to:
www.support.compaq.com/patches/
201412-003.book Page 10 Thursday, October 3, 2002 9:05 AM