Store the application data on a zonal persistent disk. Create a snapshot schedule for the disk. If an outage occurs, create a new disk from the most recent snapshot and attach it to a new VM in another zone.

Store the application data on a zonal persistent disk. If an outage occurs, create an instance in another zone with this disk attached.

Store the application data on a regional persistent disk. Create a snapshot schedule for the disk. If an outage occurs, create a new disk from the most recent snapshot and attach it to a new VM in another zone.

Store the application data on a regional persistent disk. If an outage occurs, create an instance in another zone with this disk attached.