Specifications

Introduction
29MSA1000 Reference Guide
SCSI I/O Module with an Integrated Environmental Monitoring Unit
(EMU)
This element performs several functions, including monitoring the enclosure
operation, detecting and indicating errors, providing I/O connectors, and
displaying enclosure status.
Figure 5 is an illustration of a SCSI I/O Module with the integrated EMU.
Figure 5: SCSI I/O Module with an integrated Environmental Monitoring Unit
EMU functions include:
■ Monitoring the power supply voltages
■ Monitoring the power supply and enclosure temperatures
■ Monitoring the presence and status of hard drives
■ Detecting and reporting element changes in the enclosure and showing the
addition or removal of a hot-pluggable component
■ Controlling drive status indicators
■ Providing expansion ports for external HP StorageWorks enclosures
For more information on the SCSI I/O module, including installation and removal
and status indicators, refer to the “Enclosure Status Indicators” and “Replacing a
SCSI I/O Module” sections of the “Operation and Management” chapter.