5. On a clustered system, determine which controller node is the active node and which is the passive
node.
Note
Although both controller nodes in the Active/Active Cluster implementation are “active”, the
controller node that is currently hosting the cluster management services is considered the active
controller by the system. If you are replacing SATADoms on both controllers, you should replace the
SATADom on the passive controller first, and then replace the SATADom on the active controller.
a. Open a separate SSH session to each controller node.
b. On each node, log on as
nxadmin
.
c. When the command prompt appears, type
menu
, then press the
Enter
key.
d. When the main menu is displayed, type
2
(Shutdown and Reboot Menu), then press the
Enter
key.
e. Type
8
(Power Control Menu...) and press the
Enter
key.
f. Type
2
(Show Status) and press the
Enter
key to display the node’s status, either active or passive.
g. Type
1
(Show Location) and press the
Enter
key to display the position of the controller in the
chassis; for example,
Left side of chassis from front, slot 01
.
►
To back up the old SATADom:
The operating system and system configuration reside on the SATADom. It is therefore necessary to copy
this information from the old SATADom to the new one. This process can only be done by Technical Support,
see
Once Technical Support has completed backing up the SATADom, you may continue with the following
procedures.
►
To remove and replace the SATADom:
1. Remove the controller from the system. See
Unity Storage Expansion controllers
on page 36 for
directions.
2. Press the small, metal latch near the base of the SATADom, then gently remove the SATADom from the
socket.
Note
The SATADom may be hard to remove. Do NOT force it, but gently oscillate it from side to side
until it comes out.
Figure 5-14: Removing the old SATADom
Chapter 5: Support-Assisted Replacements: Class 3
5
Nexsan Unity
73