IBM SYSTEM STORAGE EXP3000 - INTEROPERABILITY MATRIX..., Installation And User Manual

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The LEDs on the ESM are shown in the following illustration.
OK to remove LED (blue)
Fault LED (amber)
Power on LED (green)
Link fault LED (amber) Link up LED (green)
Link up LED (green) Link fault LED (amber)
Link fault LED (amber)
When this amber LED is lit, it indicates that the link over the SAS cable is
not successful.
Link up LED (green)
When this green LED is lit, it indicates that the link over the SAS cable is
successful.
OK to remove LED (blue)
This LED is not supported.
Fault LED (amber)
When this amber LED is lit, it indicates that an ESM has failed.
Power-on LED (green)
When this green LED is lit, it indicates that the ESM is receiving power.
EXP3000 power features
This section contains instructions for turning the EXP3000 on and off under normal
and emergency situations.
If you are turning on the EXP3000 after an emergency shutdown or power outage,
see “Turning on the EXP3000 after an emergency” on page 19.
Turning on the EXP3000
To turn on the power for the initial startup of the EXP3000, complete the following
steps:
1. Verify that:
a. All cables are properly connected.
b. Both power cords are connected into the rear of the EXP3000 and into
properly grounded electrical outlets.
c. All hard disk drives are locked securely in place.
Important: You must install a minimum of four hard disk drives for both
power supplies to operate in a redundant mode.
2. Check the system documentation for all the hardware devices that you want to
turn on and determine the proper power-on sequence.
Note: Be sure to turn on the EXP3000 before or at the same time as you turn
on the device with the RAID controller.
Chapter 3. EXP3000 controls, LEDs, and power
17