Raid Controller Needs Attention And Service Action Allowed Leds - IBM DS5100 Installation, User's, And Maintenance Manual

Figure 106. RAID controller Needs Attention and Service Action Allowed LEDs
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IBM System Storage DS5100 and DS5300 Storage Subsystem: Installation, User's, and Maintenance Guide
The Service Action Allowed LED turns on (turns blue) on the controller you
selected to remove.
e. Go to step 5.
Needs Attention Service Action Allowed
LED (amber) LED (blue)
Controller B
4. Is the Service Action Allowed LED turned on?
Figure 106 shows the location of the Service Action Allowed status LED on the
back of a controller.
Attention: Never remove a controller unless the Service Action Allowed
status LED is turned on. Doing so can result in a potential loss of data.
v Yes – Go to step 5.
v No – Another component requires attention before you can remove the
controller. Normally, this situation indicates that a power supply and fan unit
is either powered off or failed. Ensure that both power supply and fan units
are powered on and in an optimal state. If the Service Action Allowed LED
of the failed controller is unlit and both power supply and fan units are in an
optimal state, contact your IBM support representative.
Electrostatic discharge can damage sensitive components. Touching the
storage subsystem or its components without using a proper ground might
damage the equipment. To avoid damage, use proper antistatic protection
while handling any components.
5. Put on antistatic protection.
6. (If applicable) Unpack the new controller. Save all packing materials in the
event you need to return the new controller.
7. (If applicable) Determine whether the replacement controller will serve as
controller A or controller B. (Controller A is inserted in the top controller bay;
controller B is inserted in the bottom controller bay.) Then apply the controller
labels for host channels, drive channels, power inputs, and numeric display to
the replacement controller. The controller labels and instructions are included
with the replacement controller. Make sure that the labels are aligned properly
and do not cover any ports or LEDs.
Attention: Handle and install fiber-optic cables properly to avoid degraded
performance or loss of communications with devices. For specific handling
guidelines, see "Handling fibre-optic cables" on page 48.
8. Disconnect all attached interface cables from the controller you are upgrading
or replacing, including the SFP modules. Ensure that you label each cable so
Controller A
Service Action Allowed
LED (blue)
Needs Attention
LED (amber)