Hi @Marouf Ali ,
I am not a native english speaker. But I think the fail over
in this context and sentence means a failover
will be done automatically.
Failover is switching to a redundant or standby computer server .....
Source: https://en.wikipedia.org/wiki/Failover
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten