Re: Compression vs compaction for SAV

[KirkG@xxxxxxxxxxxxxx]

I know one is done by HW the other by SW. Maybe there's too much a 
performance hit to get the higher rate?

---------------------------------
Kirk Goins
IBM Certified AS/400 Technical Solutions
Pacific Information Systems - An IBM Premier Business Partner
503-290-2104
kirkg@pacinfosys.com
---------------------------------





Don <dr2@cssas400.com>
Sent by: owner-midrange-l@midrange.com
05/24/00 08:51 AM
Please respond to MIDRANGE-L

 
        To:     midrange-l@midrange.com
        cc: 
        Subject:        Compression vs compaction for SAV



Dumb question du jour:

Out of curiosity, if you use compressions on the 400 you get about a 1.7:1
ration, but if you use compaction you get a 3:1 ratio. 

Now, this begs the question, why doesn't IBM improve the compression
algorithm used to in effect be the compaction algorithm as we get alot
better media utilization...?

What am I not seeing here???

Don in DC





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