I have a failed disk on a Equallogic PS devices, however support for this equipment has ended.

Buy a disk with the same specification to exclude the replacement however, once you make the change, the controller does not recognize the disk, sending a message of " the until in cabinet , the unit is not compatible with this matrix. contact your matrix support with the model number".

According to notes from their forums I found that it can be cause of the firmware level.

Does the firmware upgrade apply to entry controller or only to the disk?

What are the requirements that I must I take into account? 

 Is DELL technical support necessary ? 

 It should be noted that the new disk has a highest level.