How to squeeze out all disk space in TrueNAS?

Question

ZFS

From what I understand, ZFS suggests not using 100% disk space to improve performance. But is there a simple way to maximize the disk space used when creating a zvol? And then it constantly issues warnings, asks for confirmation when using non-optimal values, and as a result, 2 x 8TB gave a "disk" of 13.7 TB.

Answer 1

Set quotas (in GB, TB) using the zfs set quota command