Chapter 3: System Interface
3-1
Chapter 3
System Interface
3-1 Overview
There are several LEDs on the chassis control panel as well as others on
the SCSI drive carriers to keep you constantly informed of the overall status
of the system as well as the activity and health of specific components.
There are also two buttons on the chassis control panel. This chapter
explains the meanings of all LED indicators and the appropriate response
you may need to take.
3-2 Control Panel Buttons
There are two push-button buttons located on the front of the chassis.
These are (in order from left to right) a UID button and a power on/off
button.
zUID: Depressing the UID (unit identifier) button illuminates an LED on
both the front and rear of the chassis for easy system location in large
stack configurations (see page 5-21). The LED will remain on until the
button is pushed a second time. Another UID button on the rear of the
chassis serves the same function.
zPOWER: This is the main power switch, which is used to apply or
turn off the main system power. Turning off system power with this button
removes the main power but keeps standby power supplied to the system.