Environmental Monitoring Unit (EMU)
3–4 UltraSCSI RAID Enclosure
I/O Module Status
The EMU also ensures that the six I/O modules are present, properly
installed, and communicating with the backplane, and that TERMPOWER
is at the correct level. The EMU reports an error condition whenever any of
these conditions occurs. The EMU also reports the I/O module type to the
array controller. Should the controller determine that the all modules are not
the same type, it can display this information on the optional maintenance
terminal.
An integrated circuit on each I/O module functions as a bus expander. The
EMU and the array controller can enable or disable this circuit on an
individual I/O module, thereby controlling individual external SCSI buses.
Enclosure Configuration Information
The EMU maintains the following configuration information:
•
Enclosure number (the PVA SCSI ID setting)
•
EMU microcode revision
•
EMU message protocol revision
•
Temperature sensor set points
•
The number of installed power supplies by location
•
The number of installed SBBs by location
•
The number of operational blowers in each bank
Summary of Contents for StorageWorks UltraSCSI DS-BA370 Series
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