Attempted to "revive" a failed drive (and replace other failed HDD). Witnessed the "Working dialog for a considerable period of time", then lost connection to the array in the MDSM.

 7 Segment Display codes on the controllers: LU + OE

Array vanished from the MDSM and is now "Unidentified Disk Array" with no means to manage/administrate it anymore.

 What are the steps to recover?

 

PowerVault MD3820i

Service tag is: in case that is needed or helpful.