Turning Compression On; Example 1; Example 2; Turning Compression Off - HP StorageWorks SDLT Series Reference Manual

Operating System Device Drivers

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:
Where:
■
■
■

Example 2

Another example to turn on compression using a tar command is:
Where:
■
■

Turning Compression Off

The following command turns hardware compression off:
For the latest UNIX patches refer to:
10
$tar cvf /dev/tape/tape5_d? filename.txt
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.
$tar cvf /dev/tape/tape5c filename.txt
tape5 = the tape device as known by the system (shown in the file command,
in this case, tape unit 5).
c = compression on.
$tar cvf /dev/tape/tape5 filename.txt
www.support.compaq.com/patches/
SDLT Tape Drives Reference Guide