Which Cisco UCS Manager feature allows you to specify multiple LDAP servers for user authentication?

You can configure Cisco UCS to use multiple authentication systems by configuring the following features:
• Provider groups
• Authentication domains

A provider group is a set of providers that are used by Cisco UCS during the authentication process. Cisco UCS Manager allows you to create a maximum of 16 provider groups, with a maximum of eight providers
allowed per group.

During authentication, all the providers within a provider group are tried in order. If all of the configured servers are unavailable or unreachable, Cisco UCS Manager automatically falls back to the local authentication
method using the local username and password.

Authentication domains are used by Cisco UCS Manager to leverage multiple authentication systems. Each authentication domain is specified and configured during login. If no authentication domain is specified, the
default authentication service configuration is used.

You can create up to eight authentication domains. Each authentication domain is associated with a provider group and realm in Cisco UCS Manager. If no provider group is specified, all servers within the realm are
used.

an LDAP provider group allows you to authenticate using multiple LDAP databases.