FS7600 NAS Container - How to reclaim free space on container which have data deduplication active

Hello, 

 I am checking on a reclaim/UNMAP process. 

 Just to be clear, the container can show 100% in-use and the OS  show a much lower value.  That's normal. If UNMAP/Reclaim isn't done on the fly then you see the differences in reported free space.  The OS and filesystem know what blocks can be re-used safely. 

 So even if there is no reclaim option, you won't run out of space until you actually try to store more than the reported capacity. 

 Regards, 
Don 

As @dwilliam62 suggested,

Snapshots are stored within the containers they relate to, and will use space from that container.  If you make a snap of that container, and then delete a file, there will be no space saving because the file will be retained within the snapshot.

It is also worth pointing out that NDMP and Replication also make snapshots.  NDMP snapshots will be retained until the NDMP backup is completed, and then that snapshot will be deleted and reclaimed.  Replication, will create a snapshot, and retain it until the replication completes.  Both of these processes will use space local to that container.

Hello, 

One question, are snapshots enabled? 

Don

Hello, 

 To add to what Gary said.  If you are using Replication then UNMAP/Reclaim is disabled.  You won't be able to the freed space to show up.  As I mentioned the blocks will be re-used automatically. 

 Do you still have a service contract for this system?  

 If you do opening a support case will get you more detailed answers. 

 Regards, 

Don 

hi don,

yes, i've omit two things very important :

* snapshots are actived on this container. One of them has 450Gb

* the replication of this container is also active

thanks for your answers.

thanks Gary, thanks Don for your answers.

we have a service contract and as you say, we open a support case right now.

regards

Hello, 

 That's great!   Thanks for letting us know. 

Regards,

Don