HP StorageWorks 6100 - Enterprise Virtual Array User Manual page 69

NOTE:
Your storage system may use an enclosure address bus higher than 14 if your configuration includes
an optional expansion cabinet. The enclosure address bus connection determines the En. For a single
rack, the display is a decimal number in the range 01 through 14. For a multiple (two) rack
configuration, the display is decimal number in the range 01 through 24.
By default, the two-character alphanumeric display shows this number. Pressing the bottom push-button
changes the display to En, the En display mode.
When the display is En, pressing and releasing the top push-button displays the enclosure number.
A display of 00 indicates that the enclosure is not connected to the enclosure address bus. When this
condition exists, there is no EMU-to-EMU communication over the enclosure address bus.
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
HP StorageWorks 4x00/6x00/8x00 Enterprise Virtual Array user guide
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