ddb disks run out of space, what can I do

Hello Team,

my customer has a 400TB backend storage and 4TB ddb space (two partitions). Both ddb disks are full.

I see 1.062.831.168 unique blocks on files db. Fact is he needs to increase his ddb space but it takes time to organize disks and install them. 

What can we do to bridge this time. Is there a “space reclamation” for the ddb disks too. May be a seal is the solution because from ddb view we start from scratch. I know the obvious consequences such as baseline and network load. Empty the ddb paths and do a restore was a thought.

Do you have other suggestions

Thanks

Joerg