Digi-CA™ the complete Certificate Authority [CA] system
Backup & Disaster Recovery

A CA or PKI, although not mission critical, must ensure that all its data is protected and available at all times. Using fail-over may ensure that no data is lost, but the best option is to ensure that there is a back-up system that is completely separate from the main system.

This is referred to as disaster recovery and in high security situations, this backup disaster recovery is usually located at a separate geographic location from the main system.