Which of the following statement is true regarding Remus?

Question $36$ options:

Uses high frequency checkpointing to handle hardware fail$-$stop failures on a single host with a whole system migration.

Incurs large overhead

Uses low frequency checkpointing to handle hardware fail$-$stop failures on a single host with a whole system migration.

Uses high frequency checkpointing to handle software fail$-$stop failures on a single host with a whole system migration.