DSN-4000 Series Hardware Reference Guide
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A.4 Replacing the Controller Module in the Primary Array
The controller module monitors and manages the logical volumes and the iSCSI network
traffic to those volumes. When the controller module is replaced, all of your volume
information remains intact because this logical drive information is stored on the hard disk
drives. However, your other configuration data (including iSCSI initiator access, network
portals and advanced system settings) are stored in the controller module. Although
controller module hardware failures are rare, you should save a System Configuration file
that can be restored to the new controller, if replacement becomes necessary.
Do not replace the controller module based only on LED colors. Only
replace the Controller Module when specifically directed to do so by D-Link
Technical Support.
Before performing this procedure, you must perform an orderly shut-down
of the DSN-4X00 primary array, which means that all of your volumes will
be unavailable during the replacement procedure.
Use the following procedure to replace the controller module on the DSN-4X00 primary
array.
1.
Perform an orderly shutdown of the DSN-4X00 storage array and remove the power cords
from the rear panel.
2.
Disconnect all of the network, serial and SAS cables from the controller module.
3.
On the controller module, loosen the thumbscrew, swing the ejection lever to the right
and pull the Controller Module out of the enclosure (see Figure A-3).
Figure A-3. Removing the Controller Module on the Primary Array
4.
Carefully slide the new controller module into the enclosure.
5.
Swing the latch to the left until the controller module is fully-seated in the enclosure
(but do not to force the latch if any resistance is encountered), and then secure it with
the thumbscrew.
6.
Reconnect all network, serial, SAS, and power cables.
7.
Switch on the power by turning ON the power supply switches.
Thumbscrew
Ejection Lever
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