Re: 3570 Compression
1999-06-21 17:02:35
> We don't use client compression at all. Rely entirely on the drives for
> compression.
We also do not use client compression, but some of our "customers" store
compress files. Here are my stats for mostly unix clients (Solaris, SGI,
AIX_, and about a dozen NT Servers:
Average data on All 3570 tapes (MB/tapes) = 21415626.7/1425 = 15028.51MB
Average data on Full 3570 tapes (MB/tapes) = 20855129.6/1363 = 15300.90MB
Average data on Vaulted 3570 tapes (MB/tapes) = 11539106.2/746 = 15467.97MB
Average data on non-DEPT 3570 tapes (MB/tapes) = 8657613.3/570 = 15188.79MB
Average data on Primary DEPT tapes (MB/tapes) = 1218907.2/109 = 11182.63MB
Average % in use of Full 3570 tapes = 52.99%
Tape with least data:
249203 DEPT_TAPE 3570DEPT 6,178.1 27.0 Full
Tape with most data:
019A11 BACKTAPE 3570TAPE 55,072.9 48.6 Ful
I get less compression on the "DEPT" tapes because those are personal
desktop machines, not servers, and those users tend to tar-n-compress
stuff to save disk space.
019A11 most likely has an Oracle database on it.
Steve (unVMix Systems Programmer/Dude) Roder
(tkssteve AT ubvm.cc.buffalo DOT edu | tkssteve AT acsu.buffalo DOT edu |
(716)645-3564 ,
| http://ubvm.cc.buffalo.edu/~tkssteve)
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