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Omedina
30 pts.
 Problem to generate back ups in compressed format
Backup, IBM Ultrium LT04, LT04, RHEL 5
We have an IBM Ultrium LT04 included in RHEL5 LPAR (IBM System i520) where we have the following problem: We can not generate back ups in compressed format (1.6 TB), we are only able to generate in the normal format (800 GB). Just in casa our back ups are processed in Red Hat Enterprise Linux version 5.4. We would like to know what we need to obtain back ups in compressed format

Software/Hardware used:
ASKED: February 24, 2010  10:14 PM
UPDATED: February 25, 2010  5:13 PM
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I'm guessing you're using the default during the save "Data compression *DEV"? If so and your save is not compressed then your LTO4 is not setup to compress. This is the PARM for the i5, there may be a similiar one for the Linux command? Also check Data Compression under Drive Identity and verify if the option Yes. That may be the problem.
Last Wiki Answer Submitted:  February 25, 2010  12:39 am  by  Whatis23   5,665 pts.
All Answer Wiki Contributors:  Whatis23   5,665 pts.
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We have already tried to activate the compression with the commands MT option
“COMPRESSION” and “DEFCOMPRESS” but with no results. We do not receive any message, therefore we do not know if the data compression was successfully executed before the generation of back ups.

Please let us know your opinion,

Regards,
Oscar Medina

Omedina
 30 pts.