Documents the commands and parameters necessary to manage and sense the state of the power supplies, the cooling devices, the displays, the indicators, the individual storage devices, and other non-SCSI elements installed in an enclosure. The command set uses the SEND DIAGNOSTIC command and the RECEIVE DIAGNOSTIC RESULTS command (see SPC-5) to obtain configuration information for the enclosure and to set and sense information for each type of element that may be installed in the enclosure.