UCS System Policies Explained & Configuration

I- Chassis Discovery Policy

The chassis discovery policy determines how the system reacts when you add a new chassis. Cisco UCS Manager uses the settings in the chassis discovery policy to determine the minimum threshold for the number of links between the chassis and the fabric interconnect. However, the configuration in the chassis discovery policy does not prevent you from connecting multiple chassis to the fabric interconnects in a Cisco UCS instance and wiring those chassis with a different number of links.

If you have a Cisco UCS instance that has some chassis wired with 1 link, some with 2 links, and some with 4 links, we recommend that you configure the chassis discovery policy for the minimum number of links in the instance so that Cisco UCS Manager can discover all chassis. After the initial discovery, you must reacknowledge the chassis that is wired for a greater number of links and Cisco UCS Manager configures the chassis to use all available links.

Cisco UCS Manager cannot discover any chassis that is wired for fewer links than are configured in the chassis discovery policy. For example, if the chassis discovery policy is configured for 4 links, Cisco UCS Manager cannot discover any chassis that is wired for 1 link or 2 links. Reacknowledgement of the chassis does not resolve this issue.

Configuring the Chassis Discovery Policy:

Step 1	In the Navigation pane, click the Equipment tab.
Step 2	On the Equipment tab, click the Equipment node.
Step 3	In the Work pane, click the Policies tab.
Step 4	Click the Global Policies subtab.
Step 5	In the Chassis Discovery Policy area, choose the number of links to be used by the chassis from the Action drop-down list.
Step 6	Click Save Changes.

II- Rack Server Discovery Policy

The rack server discovery policy determines how the system reacts when you add a new rack-mount server. Cisco UCS Manager uses the settings in the rack server discovery policy to determine whether any data on the hard disks are scrubbed and whether server discovery occurs immediately or needs to wait for explicit user acknowledgment.

Cisco UCS Manager cannot discover any rack-mount server that has not been correctly cabled and connected to the fabric interconnects.

Configuring the Rack Server Discovery Policy:

Procedure

Step 1	In the Navigation pane, click the Equipment tab.
Step 2	On the Equipment tab, click the Equipment node.
Step 3	In the Work pane, click the Policies tab.
Step 4	Click the Global Policies subtab.
Step 5	In the Rack Server Discovery Policy area, complete the following fields:NameDescriptionAction fieldThe way the system reacts when you add a new rack-mount server. This can be: immediate—The system attempts to discover new servers automaticallyuser-acknowledged—The system waits until the user tells it to search for new serversScrub Policy drop-down listThe scrub policy to run on a newly discovered server if that server meets the criteria in the selected server pool policy qualification.
Step 6	Click Save Changes.