1. Unplug the power of the enclosure and note any positive change in status.
2. Power cycle the DR and the EMM in this sequence, power down the DR, power down the EMM Storage Unit, wait a couple of mins, power up the EMM then power up the DR
3. Try to reseat with the cables intact, and note any positive change in status.
All these steps can also be combined.
Power cycle will usually clear the errors if the EMM storage isn't bad.
If EMM still fails open a case and provide the dset and basic diagnostic