HP 4000.6000.8000 Enterprise Virtual Arrays - Manual (Page 33)

A display of 01 through 14 indicates that the enclosure is connected to the enclosure address bus
and can exchange information with other enclosures on the enclosure address bus. The decimal
number indicates the physical position of the enclosure in relation to the bottom of the rack.
•
01 is the address of the enclosure connected to the lower connector in the first (lower) enclosure
ID expansion cable.
•
14 is the address of the enclosure closest to end of the bus, the upper connector in the last
(upper) ID expansion cable.
Unless there is an error condition, the display automatically returns to the enclosure number (01
through 14) one minute after a push-button was last pressed.
Enclosure address bus
The enclosure address bus provides a means for managing and reporting environmental conditions
within the rack. It is composed of enclosure ID expansion cables that interconnect the drive enclosures
and controller enclosures. Two drive enclosures connect to each enclosure ID expansion cable.
The drive enclosure numbers are always assigned by the enclosure address bus. Connecting the
EMU CAB connector to an enclosure address bus enclosure ID expansion cable automatically
establishes an enclosure number of 01 through 14. Any drive enclosure not connected to the
enclosure address bus has the enclosure number 00.
NOTE: The enclosure number is automatically assigned. You cannot manually assign an enclosure
number.
The enclosures are numbered as shown in Figure 14 (page 33) .
Figure 14 Enclosure numbering with enclosure ID expansion cables
NOTE: If an expansion rack is used, the enclosure numbering shown above may change or
contain additional numbering. See the HP Enterprise Virtual Array Hardware Configuration Guide
for more information.
For more information about the reporting group number, see “Reporting group feature” (page 37) .
Fibre Channel drive enclosures 33