Failover Cluster

After a disk has been created on the FlashArray and connected to the Hosts or Host Group it will show up on the Hyper-V cluster as a new offline disk.

Open Disk Management and right-click the disk in the left pane and online it, then right-click again, and initialize it as a GPT disk. Next, right click in the right pane and create a new volume.

Select NTFS (because ReFS loses Offloaded Data Transfer (ODX) and forces all writes to be redirected to the CSV owner impacting write performance). Select a 64K Allocation unit size, which will be the minimum because Windows will increase that size automatically depending on the size of the volume.

Open Failover Cluster Manager, right-click Disks, and then select Add Disk.

Select the disk you just formatted and select OK to add it to the cluster as Available Storage.

Under Disks in Failover Cluster Manager, right-click the new disk that is marked as Available Storage, and select Add to Cluster Shared Volumes.

The status changes from Available Storage to Cluster Shared Volume. In the bottom pane the mount point is shown as C:\ClusterStorage\Volume5.