Hello,

I have a ME4024, in Pool A with 2 disk groups.

First disk group with 10*2.4TB SAS 10k
Second disk group is now added with 16*1.92TB SSD

Both Raid6.

Tier Affinity of the Volumes from this Pool is set to Performance.

Storage is used for ESXi 6.7 only.

The issue I now have: all data is placed on the SAS disks, and the SSD are not used. Even if I create a new Volume/VMFS and migrate a few VMs to that new VMFS the data is placed on the SAS disks.

Why is the ME4024 avoid using the SSDs?

As far as I understand the Adminguide the SAN should also start to move the data from SAS to SSD since there is enough free space to hold all data, and also place all new data to the SSDs only?

Do I need to remove the SAS disk group from Pool A to get the full benefit of the SSD performance?