UPDATE: Dec 6, 2011 @ 07:45

The controller replacement went smoothly with no disruption of services.

The Dell Equallogic SAN is experiencing abnormal behavior in one of its controllers. Dell is sending out a replacement part tonight and we have scheduled a replacement of the suspect component at 7:30 AM tomorrow (Tuesday) morning. This should be a non-disruptive maintenance procedure that should take just a few minutes to complete. We do not expect any service disruption.