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

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CAUTION:
To prevent damage from overheating, replace a failed controller assembly FRU
within 5 minutes of removal. If replacing it will take longer than 5 minutes,
then ensure that the temporary filler that is shipped with the controller
assembly FRU is installed in the SBB slot until you complete the replacement.
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.
Removing a controller
Before you begin:
v
Read the "Safety" and "Best practices guidelines" sections of this document.
v
Ensure that you wear an anti-static wrist strap.
Attention: Never remove a controller unless the Service Action Allowed LED is
lit. Doing so can result in loss of data.
Complete the following steps to remove a controller from the storage system:
CAUTION:
To prevent damage from overheating, replace a failed controller assembly FRU
within 5 minutes of removal. If replacing it will take longer than 5 minutes, stop
all I/O activity to the storage expansion enclosure and turn off the power until
you complete the replacement.
1. If the controller has failed, do not continue with this procedure. Instead, go to
“Replacing a controller” on page 80.
Attention: Handle and install cables correctly to avoid degraded performance
or loss of communication with devices. See Chapter 3 "Cabling the DCS3860" in
this document for more information.
2. Disconnect all interface cables from the controller. Ensure that you label each
cable so that you can reconnect it correctly.
3.
Remove the controller from the chassis.
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IBM System Storage DCS3860 Storage System: Installation, User's, and Maintenance Guide