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##### ASR Overview

The ASR feature enables the server to automatically configure failed components out of operation until they can be replaced. In the server, the following components are managed by the ASR feature:

- CPU strands

- Memory DIMMs

- I/O subsystem

The database that contains the list of disabled components is referred to as the ASR blacklist (`asr-db`).

In most cases, POST automatically disables a faulty component. After the cause of the fault is repaired (FRU replacement, loose connector reseated, and so on), you might need to remove the component from the ASR blacklist.

The following ASR commands enable you to view and add or remove components (`asrkeys`) from the ASR blacklist. You run these commands from the Oracle ILOM `->` prompt.

Command | Description
--- | ---
`show components` | Displays system components and their current state.
`set` asrkey `component_state=Enabled` | Removes a component from the `asr-db` blacklist, where asrkey is the component to enable.
`set` asrkey `component_state=Disabled` | Adds a component to the `asr-db` blacklist, where asrkey is the component to disable.

Note - The `asrkeys` vary from system to system, depending on how many cores and memory are present. Use the `show components` command to see the `asrkeys` on a given system.

After you enable or disable a component, you must reset (or power cycle) the system for the component's change of state to take effect.

##### Related Information

- Display System Components

- Disable System Components

- Enable System Components

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