You might want to rediscover a platform if you modify the platform, modify the network, add or remove datastores, or add or remove resource pools. Rediscovery automatically adds any new Host, Network, Datastore, and Resource Pool resources; however, it does not remove the old resources.
To rediscover one or more platforms:
In the Web Interface, select to Resources > Platforms.
Select one or multiple platforms in the Platforms list.
In the actions above the list, click Rediscover to initiate rediscovery for each of the selected platforms.
To rediscover a single platform:
In the Web Interface, select to Resources > Platforms.
In the Platforms lists, select the platform, then click Edit.
In the header area, note the Sub Status Discovered.
Click Rediscover to initiate rediscovery.