IBM Storwize V7000 Unified Problem Determination Manual page 232

The node canister might be in a service state because it has a hardware issue, has
corrupted data, or has lost its configuration data.
Use the service assistant in the following situations:
v When you cannot access the system from the management GUI and you cannot
v When the recommended action directs you to use the service assistant.
The storage system management GUI operates only when there is an online
system. Use the service assistant if you are unable to create a system or if both
node canisters in a control enclosure are in service state.
The service assistant does not provide any facilities to help you service expansion
enclosures. Always service the expansion enclosures by using the management
GUI.
The service assistant provides detailed status and error summaries, and the ability
to modify the World Wide Node Name (WWNN) for each node.
You can also complete the following service-related actions:
v Collect logs to create and download a package of files to send to support
v Remove the data for the system from a node.
v Recover a system if it fails.
v Install a code package from the support site or rescue the code from another
v Update code on node canisters manually versus completing a standard update
v Configure a control enclosure chassis after replacement.
v Change the service IP address that is assigned to Ethernet port 1 for the current
v Install a temporary SSH key if a key is not installed and CLI access is required.
v Restart the services used by the system.
The service assistant completes a number of tasks that cause the node canister to
restart. It is not possible to maintain the service assistant connection to the node
canister when it restarts. If the current node canister on which the tasks are
completed is also the node canister that the browser is connected to and you lose
your connection, reconnect and log on to the service assistant again after running
the tasks.
Accessing the service assistant
The service assistant is a web application that helps troubleshoot and resolve
problems on a node canister in a control enclosure.
About this task
You must use a supported web browser. For a list of supported browsers, refer to
the topic Web browser requirements to access the management GUI.
Procedure
To start the application, complete the following steps.
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Storwize V7000 Unified: Problem Determination Guide 2073-720
access the Storwize V7000 Unified to run the recommended actions
personnel.
node.
procedure.
node canister.