Tape utilization
2000-04-14 05:54:15
Dear ADSMer,
Client Version: Solaris 3.1.0.7
Server Version AIX 3.1.2.40
Drives: 3590E / Firmware mostly-up-todate
... changing one client with about 1.000.000 files
from compression=NO to Compression=yes
and running the backup full against all files we got
the Data ( about 64 GB ) on the 3590 Tapes in the
following output ( the client is the only one in this stg-pool):
adsm> q vol stg=tape_*
Volume Name Storage Device Estimated Pct
Volume
Pool Name Class Name Capacity Util
Status
(MB)
------------------------ ----------- ---------- --------- -----
--------
--------
URZ013 TAPE_O26_1 3590CLASS 18,569.5 100.0
URZ013 TAPE_O26_1 3590CLASS 18,569.5 100.0
Full
URZ087 TAPE_O26_1 3590CLASS 18,322.9 100.0
Full
URZ124 TAPE_O26_1 3590CLASS 18,266.4 100.0
Full
URZ202 TAPE_O26_1 3590CLASS 20,000.0 53.0
Filling
... my question now is : can I do something parameter-tuning
to get more out of the tapes ( more near by 20 GB ) ?
is the difference caused by the number
of files or does the compression mode of the Clientfiles have an
effect
on the space used by adsm somehow ?
Thanks in advance !
Rainer
--
__________________________________________________________
__________________________________________________________
Rainer Wolf rainer.wolf AT rz.uni-ulm DOT de
Tel: 0731-50-22482 Fax: 0731-50-22471
Universitaet Ulm
Universitaetsrechenzentrum Albert-Einstein-Allee 11
AG Basissysteme 89069 Ulm
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