Following are steps to add new disk to cluster:
Add Cluster Disk
1) Add cluster disk 3 in disk > click on Storage >then disk >Right top Corner Add Disk click on that > then pop up window is open ADD DISK TO CLUSTER > Check box the cluster disk 3 > then click on ok button .
Available Storage
2) Cluster disk 3 is add in Disk which is assigned to Available Storage3) Right Click on Cluster disk 3 > click on MORE ACTION >then click on Assign to another role > then POP UP window will open select SQL SERVER (MS SQL SERVER) >Then click on OK Button.
4) After Assign resources to Role in DISK > Cluster Disk 3 assigned to SQL SERVER (MS SQL SERVER ) will display
Dependencies
5) To add Cluster disk 3 Dependencies to SQL SERVER ROLE .
Click on Roles > SQL Server (MS SQL SERVER) > Resources >OTHER Resources right Click on properties > Click on DEPENDENCIES >ADD AND /OR column select AND and in Resources Column Select Cluster Disk 3 > Click on Apply then OK .