Last night the motherboard in the SMC server failed. This morning Aaron and I installed our spare and brought the server back online about 10:45am. Considering the difficulty of diagnosing the problem and having to deal with the large SCSI drive array the hardware swap went well, at least from our vantage point.
Honestly we were concerned that the problem involved the hard drive array initially and were relieved the problem involved a part that we had on hand. We will take this as a warning and immediately spec out a new server to replace the current machine.
Whew! How do you spell relief?