HP 3000 Enterprise Virtual Array - Manual (Page 72)

WARNING!
To reduce the risk of electrical shock, fire, or damage to the equipment, do not plug telephone or
telecommunications connectors into the “RS232 ONLY” receptacle.
EMU functions
The primary functions of the EMU include:
• Using the Enclosure Services Processor (ESP) to control the Enclosure Services Interface (ESI) and
communicate with the controllers.
• Assigning the Enclosure Number (En), based upon the cabinet address bus feature.
• Displaying the bay 1 loop ID.
• Monitoring enclosure operation.
• Detecting, reporting, recording, and displaying conditions.
• Displaying EMU, enclosure, and element status.
• Implementing automatic corrective actions for some conditions.
• Providing enclosure status data to the controllers.
• Reporting the WWN and the logical address of all drives.
NOTE:
Although the EMU can determine the logical address of a drive, the EMU can neither display nor change
this information. The Command View EVA GUI can display the addresses from the EMU-supplied
status information.
EMU monitoring functions
The internal EMU circuitry monitors the enclosure and element functions listed in Table 16 .
72 Storage system hardware components