Powering Off The Controller Module And System - Sun Microsystems Sun StorEdge A3500 Manual

4. Power on the expansion cabinet, if necessary
Refer to your expansion cabinet documentation. If the cabinet has two AC power
sequencers, you must turn both circuit breakers to the On position.
5. Power on the host system, if necessary.
Refer to your system documentation for instructions.
6. Check the status of the controller module.
See Section 4.1 "Checking the Controller Module LEDs" on page 4-2.
3.2 Powering Off the Controller Module
and System
The controller module is designed to run continuously. Once you turn on the power
to the controller module, it should remain on. The only time you should turn off the
power is when:
An emergency situation arises (like fire or flood)
Hardware or software procedures require that you turn the power off
A factory representative or service technician tells you to turn off the power
1. Halt all activity to the controller module.
Refer to the Sun StorEdge RAID Manager 6.22 User's Guide and your operating system
documentation for instructions.
2. Check the LEDs on the front and rear of the controller module to make sure that:
a. All drive Active LEDs are turned off.
Drive activity is complete.
b. The Fast Write Cache LED is off.
Controller and SCSI/FC-AL Bus activity is complete.
c. Amber fault LEDs are off.
If a fault LED is lit, see Section 4.3 "Troubleshooting" on page 4-10 to correct the
problem before you turn off the power.
See Section 4.1 "Checking the Controller Module LEDs" on page 4-2" for LED
locations and interpretations.
Caution – Except in an emergency, never turn off the power if a fault LED is lit on
!
any canister or on the front panel of the controller module.
Chapter 3 Operating the Controller Module 3-3