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

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2.
Remove the cover and save it for future use.
To install a cover on a controller, align the cover on the controller and slide it
toward the front of the controller.
Replacing a controller
Before you replace a controller in a DCS3860 storage system:
v
Ensure that both power supplies are connected and powered-on and no amber
LEDs are lit. Ensure that the power LEDs on both power supplies are lit. If the
status of either of the power supplies is not Optimal, replace that power supply
before you proceed with the controller replacement procedure.
v
If you are replacing a failed controller with a replacement controller from IBM
Service, ensure that you have ordered the replacement controller that contains
the same amount of cache memory that is installed in the failed controller. Also,
transfer the cache backup battery to the replacement controller. Transfer the
battery exactly as described in this procedure. If you do not remove and insert
the battery in the correct sequence, you could damage the controller.
v Read the "Safety" and "Best practices guidelines" sections of this document.
v
Check the WWIDs or the MAC addresses of the host ports after replacing the
controller or the host port interface adapter, or both. If you need to change any
WWID or MAC address, update the servers or switches in the configuration.
v
Ensure that you wear an anti-static wrist strap.
Note: While replacing the controller in a DCS3860 storage system , you may
require an additional controller air diverter.
To replace a controller in a DCS3860 storage system:
dcsi0048
Release
buttons
Figure 37. Removing the cover
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IBM System Storage DCS3860 Storage System: Installation, User's, and Maintenance Guide