Hello,
Long story, but basically some volumes were deleted from our SAN which contained some database files. I recreated the SAN volumes and attached to the SQL Server using all steps found in this article https://mssqltrek.com/2012/06/28/how-to-add-a-new-diskdrive-to-sql-server-failover-cluster/#comment-...
the problem is even after adding the "AND" dependency on the drives to the SQL server, I am still not able to view the new disks in SSMS. The drives have the same security settings as the other disks on the server ( i have compared them in security settings from windows). What could I be missing?