VMAX3 over-subcription Issue

Hi ,

We had an issue on VMAX3 for available cache slots and we were not able to create new tdev device.

Later we deleted unused devices and reduce the subscription rate on VMX3. Now we don't have an  issue

creating new devices on VMAX3. But I see we have very less device write pending slots 28381 ( 3.46GB)

available.I know we need more Cache now.

But Is there any subscription limit on VMAX3 ?  With existing available cache slots how much

more I can subscribe without any issue ? At what point I may have device creation issue again ?

As you see I still have 163tb available but very less device write pending slots.

Here is  SRP detail

SRP Usable : 502. TB

Allocated  : 339 TB

Free : 163 TB

Subscribed : 1620 TB

%Subscribed : 320%

Cache size (Mirrored): 1926648

Available cache slots : 747243

System Write pending slots : 556842

Device write pending slots : 28381

Thanks.

NirVik