A disaster can be anything that can put an organization’s operations at risk. Be it, cyber-attack or equipment failure, every organization has the possibility of going through a disaster of any form anytime. This is where Disaster recovery comes into the picture. The goal of Disaster Recovery is to provide continuity of operation in case of such emergency or disaster. Disaster Recovery is a broad term, while not limited to just physical disasters; it can mean data protection from different types of disasters that your firm can be exposed to, whether it is endangering your data or equipment failure, or a corruption of data on your existing infrastructure. Disaster recovery is all about constant recovery and replication of data in real time at a different physical location. The process of disaster recovery can include planning and testing which involves different physical sites for restoration.
The most imperative parts of Disaster recovery are Recovery Point Objective and Recovery Time Objective.
the point in time relative to the failure to which you need preservation of data. It is actually the age of the files or data in backup storage required to resume normal operations if a computer or other system or even a network failure occurs. It also determines the frequency of backup required for your organization. For example, if the RPO is one hour, backups must be made at least once per hour.
The amount of time an organization can ideally have ‘downtime’, which becomes a concern for most of the organizations, as downtime makes businesses grow slower and can stop organization’s work for a particular period of time. The goal here is to calculate how quickly you need to recover your data, which can then dictate the type or provisions you need to implement the same and the overall budget you should assign to business continuity.
Thus, calculating the Recovery Point Objective and Recovery Time Objective are the building structures of your disaster recovery program. There are three approaches to Disaster recovery –
Also known as DRaaS (Orchestrated Disaster Recovery as a Service), recovers in a specific order by resorting data automatically. It also helps, if you want applications to be restored quickly.
This approach replicates your workload to Azure in real time, and migration happens quickly, with just few clicks. Access to information is never lost during a state of disaster. User bandwidth stays unaffected as you can run heavy programs and analytics.
In this approach, the site recovery continuously keeps a remote check on your protected instances. The data stays encrypted even when the data is replicated on the secondary site.