Adding new DDB partition

  • 9 January 2023
  • 2 replies

Userlevel 1
Badge +6


Planning to add a new partiotion to an exiting DDB. I’ve went through the documention and have a doubt on the below.

The addtional 0.5MB of data will be added only to the magnetic disk the holds the DDB or will it be also added to the Disk library mount paths ?


“After running the Backup1, you add Partition2 and run Backup2 of the same 1 MB of data. After the second backup, 4 signatures of 128 KB size will be added to Partition2 (even though the same signatures exists in the original store) and for the other 4 signatures only the reference will be added in the original store (as the signatures already exists). The magnetic disk will have 1.5 MB of data (1 MB from the first Backup + 500 KB from Partition2 from Backup2).

On running data aging, if Backup1 is aged, then from the first partition the first 4 signatures will be aged and also 500 KB of data will be pruned from the magnetic disk.”





Best answer by Laurent 9 January 2023, 10:35

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2 replies

Userlevel 6
Badge +15

Hello !

It will be added to the DDB ‘volume’.

In the documentation, ‘DDB’ is reffered to as the database entity (whole set of files that altogether are the deduplication database), while ‘magnetic disk’ is the storage/volume hosting the DDB.

Userlevel 1
Badge +6

Got it.