Maximum noncritical - 12.6 volts Maximum critical - 13.2 volts Threshold values are set by a Send Diagnostic command to the Threshold Out diagnostic page (05h). Threshold values can be interrogated by a Receive Diagnostic Results command to the Threshold In diagnostic page (05h) with the PCV bit set to one. Subenclosures A larger SCSI storage enclosure may contain multiple subenclosures. The subenclosure with address 00h is designated the primary subenclosure and can return information about the other subenclosures. SCSI attached enclosure services SCSI attached enclosure services is a computer protocol used mainly with disk storage enclosures. It allows a host computer to communicate with the enclosure to access its power, cooling, and other non-data characteristics. The host computer communicates with the disks in the enclosure via a SCSI interface which may be Parallel SCSI, FC-AL, SAS, or SSA. One of the disk devices located in the enclosure is set up to allow SCSI Enclosure Services (SES) communication through a logical unit. The disk-drive then communicates with the SES processor in the enclosure, usually via Enclosure Services Interface (ESI), or a protocol called DSI for SSA enclosures. The data sent over the ESI or DSI interface is simply the contents of a SCSI command and the response to that command. Implemented commands Only two SCSI commands are implemented by attached enclosure services devices: See also SES-2 Enclosure Management SAF-TE — SCSI Attached Fault-Tolerant Enclosure SGPIO - Serial General Purpose Input/Output hw.sensors Computer data storage Computer hardware tuning Computer hardware standards Computer performance Motherboard SCSI System administration System monitors