IBM DCS3860, Installation, User'S, And Maintenance Manual

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Chapter 5. Replacing components
Replacing components
This section contains information about replacing components or installing optional
devices in the DCS3860 storage system and EXP3800 expansion unit.
Before you replace any component, ensure that you wear an anti-static wrist strap.
Attention: To avoid overheating the storage enclosure and causing damage to its
components, replace failed parts within 10 minutes, unless otherwise indicated.
The Recovery Guru in the Storage Manager software identifies failed parts.
Do not remove the failed part from the storage enclosure until you:
v
Review the replacement procedure for the failed part in this guide.
v
Locate screw drivers or any other hand tools that you might need to replace the
failed part.
v
Receive the replacement part and are ready to install it in the enclosure.
Service Action Allowed LED
Each controller, ESM, fan assembly, disk drive, disk drive drawer, and power
supply has a blue Service Action Allowed LED. This LED helps ensure that a
component is not removed before it is safe to do so. Do not remove any
component unless the component Service Action Allowed LED is lit.
Attention
If you remove a controller, ESM, disk drive, disk drive drawer, or power supply
when the Service Action Allowed LED is not lit, it might result in data
unavailability. If an amber LED is lit and the associated Service Action Allowed
LED is
not lit, you must run additional diagnostics before you can remove the
indicated component. Use the Recovery Guru instructions in the Subsystem
Management window or see the applicable component replacement instructions in
this chapter for the additional diagnostics that are required in this case.
The Service Action Allowed LED automatically turns on or off as conditions
change. Wait for at least two minutes after you replace a component for the storage
system to recognize the new component and update the LED status. In most cases,
when a single component fails, the Service Action Allowed LED stays lit when the
amber LED is lit for the component.
Working with controllers
This section describes how to remove a controller, remove and install a cover,
install a controller, replace a controller, and dispose of the system-board battery on
the controller.
Before you begin, ensure that you wear an anti-static wrist strap.
© Copyright IBM Corp. 2013
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