V-MAX 3 100k Disk Group with EDF is Allocated to 89%

Hello everyone,
recently I have a problem with our V-MAX 3 100k with Hypermax OS 5977.1131.1131.
I have a critical space allocation problem on disk group DG2_F_F that contains EFD.

 

I switched all volumes on which I need performance from SLA Gold to Optimized, unfortunately the allocation still increased. 

FAST should automatically perform maintenance and move non-HOT data to a second 99TB capacity 1.2TB 10k spinning disk group. Is it true?

 

SRP is allocated only from 15%. For me, from the user's point of view, I am not able to control where the volume will save the data, and therefore I do not understand the error. I would not like to solve a critical storage problem due to overflow.

 

Regards,

Tom