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Operating Systems AIX How to optimize our tape backups ? Post 302292087 by Browser_ice on Thursday 26th of February 2009 11:18:59 PM
Old 02-27-2009
Thank you for the info.

Unfortunetly, we have gzip (v1.2.4) on 1 of the DB servers. I am not aware of the license related ot its usage. So I cannot copy it over to the other DB servers.

The only compress tool we have across all servers is 'compress'.

However, if compress is a one single-threaded process, then the same method could be applied. So instead of taking 2hrs to compress all files of one DB backup, it would in theory take 20-30 min in total.

One other question, in using 'compress', which temporary storage does it use while compressing the file ? The current or some other assigned system folder ?

The folder where the backups are is pretty full and since I am not the system admin, I cannot increase its space.
 

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ZNEW(1) 						      General Commands Manual							   ZNEW(1)

NAME
znew - recompress .Z files to .gz files SYNOPSIS
znew [ -ftv9PK] [ name.Z ... ] DESCRIPTION
Znew recompresses files from .Z (compress) format to .gz (gzip) format. If you want to recompress a file already in gzip format, rename the file to force a .Z extension then apply znew. OPTIONS
-f Force recompression from .Z to .gz format even if a .gz file already exists. -t Tests the new files before deleting originals. -v Verbose. Display the name and percentage reduction for each file compressed. -9 Use the slowest compression method (optimal compression). -P Use pipes for the conversion to reduce disk space usage. -K Keep a .Z file when it is smaller than the .gz file SEE ALSO
gzip(1), zmore(1), zdiff(1), zgrep(1), zforce(1), gzexe(1), compress(1) BUGS
Znew does not maintain the time stamp with the -P option if cpmod(1) is not available and touch(1) does not support the -r option. ZNEW(1)
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