What is the difference between “DDB Last Verified On” and “Existing Job On Disk and DDB Last Verified On”?
Since there is not option to start a job that don’t verify existing jobs on disk?
There is a Quick and a non-Quick verification job, but both of them verify existing jobs on disk.
+15
DDB last verified on = Date last time any DDB verification job was run (e.g. FULL or Incremental)
Existing job on disk and ddb last verified on = Incremental DDB verification with either of the options specified.
I also found this article that outlines difference between quick verification and verification of existing jobs:
https://documentation.commvault.com/v11/expert/data_verification_of_deduplicated_data.html
Quick verification of existing jobs on disk and deduplication database
Verifies the existence of unique data blocks and whether they are consistent with the data blocks metadata available on the disk.
Use this option for a quick verification by checking the presence of the data blocks on the disk so that the new backup jobs refer only to the valid data blocks.
In comparison with the Complete Verification of Existing Jobs on Disk and Deduplication Database and Verification of Deduplication Database options, this option is faster because it does not read the data blocks on the disk. Instead, it ensures that both the DDB and disk are in sync.
Verification of existing jobs on disk and deduplication database
The Validate dedup data phase, verifies all the deduplicated jobs (unique data blocks and all references to the blocks) on the disk with the DDB and on the CommServe database.
Use this option for a complete verification of data blocks as well as existing backups on the disk.
This option ensures that existing backup jobs are restorable and can be copied during Auxiliary Copy operations.
Do you have DDB verification jobs scheduled?
We could check the schedules and see what options were triggered at those date/times (6th and 7th).
Regards,
Chris
+12
Hi
DDB Last verified indicates the last a Quick Verification was run. (DDB and Disk were in sync and the presence of data was confirmed)
Existing Jobs on Disk & DDB last verified, indicates the last time a Verification of existing jobs was run (ie data was read and confirmed on disk).
This is for both Incremental and Full.
https://documentation.commvault.com/v11/expert/data_verification_of_deduplicated_data.html
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