Managing Components With Automatic System Recovery Commands

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1.8 Managing Components With Automatic System Recovery Commands

The Automatic System Recovery (ASR) feature enables the server to automatically configure failed components out of operation until they can be replaced. In the server, theASR feature manages the following components:

UltraSPARC T2 processor strands
Memory FB-DIMMs
I/O bus

The database that contains the list of disabled components is called 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 must remove the component from the ASR blacklist.

The ASR commands (ASR Commands ) enable you to view, and manually add or remove components from the ASR blacklist. You run these commands from the ALOM CMT CLI sc> prompt.

Table 1-9 ASR Commands

Command	Description
`showcomponent`	Displays system components and their current state.
`enablecomponent` `asrkey`	Removes a component from the `asr-db` blacklist, where `asrkey` is the component to enable.
`disablecomponent` `asrkey`	Adds a component to the `asr-db` blacklist, where `asrkey` is the component to disable.
`clearasrdb`	Removes all entries from the `asr-db` blacklist.

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

Note - A reset or power cycle is required after disabling or enabling a component. If the status of a component is changed, there is no effect to the system until the next reset or power cycle.