At the start, we installed four 2TB NVME SSDs, as you can see below.

While not being the same disks, users can use them without many problems.

Lets now start to make a TRAID storage pool. At the left you select which disks you want to be added

Then you can select the RAID mode, TRAID is by default, while you can have a single disk or RAID 0/1/5/6/10 modes.

After creating the Storage pool, its time to create a volume

Under the create Volume, you can set a description of the storage Pool

How about installing 8 M2 NVME SSDs? No problem.

With 7 x 2TB NVMEs, the allocated capacity is 10.86TB.