Figure 16 Displaying error condition values
Press and hold top push-button to view first error in queue.1
Press and release top push-button.2
Press and hold top push-button to view next error.3
Press and release the bottom push-button at any time to return to the Er display.4
e.t. = element type, en. = element number, ec = error code
Analyzing condition reports
Analyzing each error condition report involves three steps:
1. Identifying the element.
2. Determining the major problem.
3. Defining additional problem information.
Reporting group feature
Another function of the enclosure address bus is to provide communications within a reporting
group. A Reporting Group (rG) is an HSV controller pair and the associated drive enclosures. The
controller pair automatically assigns a unique (decimal) four-digit Reporting Group Number (RGN)
to each EMU on a Fibre Channel drive enclosure.
Each of the drive enclosures on a loop pair are in one reporting group:
• All of the drive enclosures on loop pair 1, both loop 1A and loop 1B, share a unique reporting
group number.
• All of the drive enclosures on loop pair 2, both loop 2A and loop 2B, share a unique reporting
group number.
Each EMU collects environmental information from the associated enclosure and broadcasts the
information to reporting group members using the enclosure address bus. Information from enclosures
in other reporting groups is ignored.
Reporting group numbers
The reporting group number (RGN) range is 0000 through 4099, decimal.
• 0000 is reserved for enclosures that are not part of any reporting group.
• 0001 through 0015 are RGNs reserved for use by the EMU.
• 0016 through 4095 are valid RGNs.
• 4096 through 4099 are invalid RGNs.
Fibre Channel drive enclosures 43
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