Hello,
I have a question about saving % of dedup. What is best practise setup/setting to get above 90% of saving on dedup.
For exaplare i have alot of vm backup where yestoday saving of 90% and next day on same vm backup lover then 90%
What is de case of bad dedup???
Best answer by Onno van den Berg
So what’s up with these clients? Do they contain databases? If this is the case then I would switch to database agent protection. Depending on the version you are running it could result in less data being protected via VM backup because Commvault is aware of DB agent backup and thus excludes the database files from backup. Do note this is limited to just a few supported agents. Anyway you could of course also exclude the volumes that contain the DB files, I do hope you have separated the database files from the rest.
+19+19It depends on the configuration. If you just switch to FS backup you will still backup the same data so only when you start using separate subclients or filters it could get better, but that requires you to know where this data resides. I’m however curious to understand why you are so keen on getting a 90% or higher deduplication ratio. For me this would never be a key indicator but something that is really nice to have as it saves cost on storage and network bandwidth during backup.
+19So what’s up with these clients? Do they contain databases? If this is the case then I would switch to database agent protection. Depending on the version you are running it could result in less data being protected via VM backup because Commvault is aware of DB agent backup and thus excludes the database files from backup. Do note this is limited to just a few supported agents. Anyway you could of course also exclude the volumes that contain the DB files, I do hope you have separated the database files from the rest.
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