HP StorageWorks 2500 Disk System Enclosure User Manual download pdf (Page 18)

Whenever the EMU detects a condition that could affect operation, it performs the following operations:

• Generates an audible alarm

• Displays status in visual indicators

• Generates an error condition report

• Reports the condition to the HP-UX application software

Controls and d

isplays

Figure 3 identifies the EMU displays, controls, and connectors.

25236a

Figure 3 EMU controls and displays

1. Status indicators:

a. EMU heartbeat—Flashing green signifies an operational EMU

b. DS2500 power—Solid green signifies that the +5 VDC and +12 VDC signals are within

an acceptable range

c. DS2500 fault—Solid amber indicates that an enclosure error condition exists (normally off)

2. Alphanumeric display—A two-character display of the enclosure functions and status (typically

displays the enclosure ID).

3. Function select push button and back light—Enables you to specify what information appears

in the alphanumeric display. Pressing and releasing, or tapping the function select button

allows you to sequence through the different sublevels of a display group. The back light is

on when an error condition exists.

4. Display group select push button and back light—Enables you to view display groups and

control the audible alarm. The back light is on when the audible alarm is muted or disabled.

5. Communication ports—Unused in a JBOD environment

18 Components

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HP StorageWorks 2500 Disk System Enclosure User Manual Page 18