Windows Failover Cluster requires a special block size and must be set manually:
- Use iSCSI as the storage protocol on SoftNAS, iSCSI Initiator on the MS servers.
- You have to create the pools via the GUI, but create the vols via cli to get this.
Example below using a 40G volume and thick provision:
zfs create -V 40G -b 4k pool01/iscsi01 (crate the vol with a 4k block size)
zfs get volblocksize pool01/iscsi01 (verify)
zfs set reservation=40G pool01/iscsi01 (set the reservation size)
zfs get reservation pool01/iscsi01 (verify)
zfs list (verify)
3. Format the volumes to have 4k block size for NTFS. (ZFS uses 128k by default)