Why am I seeing available space is going to full but there is still free space when I check from VMware?

Problem/Symptom

Why am I seeing available space is going to full but there is still free space when I check from VMware?

Solution

The created pool is a thin provisioning one, by default the volume size will be filled in with the largest available capacity, which is 256TB per volume, if you didn't change the value during creating a volume, it is normal to see this size upon creation of a volume, therefore, you saw the the capacity of volume showed on VMware is 256TB, which is normal as well.

Apply to

All Qsan SAN models.