OEMR R540 drive failure

I am not a true IT person just to make that clear.  I have a PoweredgeR550 PERC H730P running Windows Server 2016.  This is one of 3 servers running Avigilon Control Center 7 video software.  Servers installed Dec 2018 with a service contract that expired Dec 2023 and I have been trying to get approval to replace servers since that fall 2023.  I believe I will have approval to replace with new servers next spring and need to baby this server along until that time.  

Yesterday we had a Raid Controller failure leaving the server running but disabling the video software.  I rebooted the server.  After the reboot the server and the video software restarted but Server Administrator under Storage -Physical Disk 0:1:12 failed and is offline.  I have a replacement drive to replace the failed disk but I am unable to fully disable or verify the correct drive that failed.  This server has 12 hot swapable drives but shows 14 physical disks in the Server Administrator labeled 0:1:0to 0:1:13.  I blinked and unblinked the failed drive with not change to the lights on the drive.  I am currently rebuilding the drive but i do not have high hopes it will be successful.  If it is not how do identify and what is the process for replacing the drive?

Thanks