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Configuring and Operating the System

AXP 1410 Installation and Use (6806800H70D)

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The active shelf manager synchronizes the shelf FRU information with the shelf FRU

information of the newly inserted shelf manager board. The active shelf manager sends HPI

events from the redundancy sensor (redundancy regains).

The system manager detects a shelf manager board insertion while receiving hot swap events

and later HPI redundancy event sensor. The system manager reads the HPI redundancy sensor

to retrieve the shelf manager redundancy status.

5.7.3.5 Shelf Manager Extraction

Extraction is a redundant operation when the shelf manager board leaves the cluster and can

be safely extracted. It is a planned operation initiated by the system manager. It is only possible

to extract the standby shelf manager. If you want to extract the active shelf manager, a

switchover has to take place so that the active shelf manager becomes standby and can then

be extracted.

To power down the standby shelf manager board the system manager performs the following

steps:

1. Reads the HPI redundancy sensor to detect which physical shelf manager board is active

2. Powers down the standby shelf manager board

3. Receives HPI redundancy event sensor (redundancy lost)

4. Receives HPI hot swap event

5. Reads the HPI redundancy sensor to retrieve the shelf manager redundancy status

The active shelf manager deactivates the standby shelf manager board under the control of the

system manager. It can be safely extracted afterwards.

The active shelf manager sends an HPI redundancy event (redundancy lost) to the system

manager.

5.8 Blade Insertion and Extraction

This section describes the steps that are carried out by the software when a blade is inserted or

supposed to be extracted.

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Emerson 1410 Wartungshandbuch Seite 116