Preparing to update individual nodes

Before you update nodes individually, ensure that the system is ready for the update.

Before you begin

After you verify that the prerequisites for a manual update are met, follow these steps:

Use the management GUI to display the nodes in the system and verify the following information:
- Confirm that both canisters are online.
- Identify which canister is acting as the configuration node.
- Record the service IP address for each canister.
If you are using the management GUI, view External Storage to ensure that everything is online and also verify that internal storage is present.
If you are using the command-line interface, submit this command for each storage system:
```
lscontroller controller_name_or_controller_id
```
where controller_name_or_controller_id is the name or ID of the storage system. Confirm that each storage system has degraded=no status.
If you are using the management GUI, select Hosts > Hosts to verify that all paths to all the volumes that are mapped to the hosts are available. Confirm that the statuses of the hosts are Online. A Degraded status indicates that the host cannot access mapped volumes.
Ensure that the multipathing driver is fully redundant, with every path available and online.
If you are using the command-line interface, enter the following command to verify host paths to mapped volumes:
```
lshost host_name_or_host_id
```
where host_name_or_host_id is the name or ID of the host. Confirm that each host has online status.
If you did not do so previously, download the installation package for the level that you want to install. You can download the most current package from the following website:

www.ibm.com/support