Split-Brain

Hung Server

Reservations On

 

    Alone

            Quroum/Witness

            Watchdog

            Watchdog & Quorum/Witness

            STONITH (serial)

Reservations Off

 

    Nothing

            STONITH (serial)

            CONFIRM_SO*

            Quorum/Witness

            Watchdog

Non-Shared Storage

 

    Default Features

            Quorum/Witness

            CONFIRM_SO*

            Watchdog

            STONITH (serial)

            Watchdog & STONITH

 

 

 

* While CONFIRM_SO is highly reliable (depending upon the knowledge of the administrator), it has lower availability due to the fact that automatic failover is turned off.


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