Hello everyone and thanks in advance for any hint.
I’m running a Commvault V11Sp20 installation of the software and recently had a 6TB Oracle Database migrated from a stand-alone Oracle 12 DB to a three-node Oracle RAC 19 installation.
Backups work properly and, “randomly” the three nodes are involved in backup jobs.
Problem is: dedupe ratio is low.
While the stand-alone data reached 95/97% of dedupe ratio, these backups for the Oracle RAC instances reach 40/65% of dedupe ratio. That is, a single Full backup takes something like 3TB of disk library (the very same disk library hosting the GDP previously used for storing the stand-alone Oracle DBs backups).
Any hints about why the dedupe ratio is so low?
Thanks in advance for your kind opinion.
Best answer by Mike Struening RETIREDView original