A Certificate Authority [CA] or Public Key Infrastructure [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. In high security situations, this back-up disaster recovery is usually located at a separate geographic location from the main system. Read more >