You can use the command-line interface (CLI) to check the status of the node.
svcinfo lsnode -delim : nodename
The following output shows what is displayed when you issue the svcinfo lsnode -delim : node1 command:
id:1 name:node1 UPS_serial_number:10L3ANP WWNN:5005676801000013 status:online IO group id:0 IO group name:io_grp0 partner node id:2 partner node name:node2 config node:yes UPS_unique_id:202378101C0D17A0 port id:5005676801100013 port status:active port id:5005676801200013 port status:active port id:5005676801300013 port status:active port id:5005676801400013 port status:active
The characteristics for the node are listed in the output, including its status of online. You might also see the following status: offline, adding, or deleting.
For more information about what commands you can use, see the IBM® System Storage® SAN Volume Controller Command-Line Interface User's Guide.