No data protection strategy can be declared to be foolproof unless it is tested and found to be failsafe. Digital data losses occur every day and enterprises are often rapidly brought to realize that the disaster recovery strategy they had assumed to be robust is really riddled with weaknesses. They are quickly disillusioned. Perhaps redundancy of strategies is the key. Cloud computing certainly believes it to be so.
Cloud backup and recovery services adopt a multi-layered approach to disaster recovery.
- Redundancy of backup types
- Redundancy of disaster recovery strategies
Redundancy of Backup Types: Cloud service providers recognize that different organizations have different needs; and that they have different failure tolerance levels and business continuity imperatives. To this end, they offer customized backup options that allow their users to:
- Stream data offsite economically and efficiently to a remote online server for future recovery
- Make local copies of the data for realization of user defined Recovery Time Objectives (RTOs) and Recovery Point Objectives (RPOs) and business continuity
- Reconfigure same, similar or entirely hardware at remote locations for disaster recovery or business continuity irrespective of the operating system in use
- Administer all types of backup from a single pane of glass
Redundancy of Disaster Recovery Strategies: Cloud backup service providers create disaster recovery strategies for their own data centers by mirroring or replicating the data center servers to a remote hot site or disaster recovery site. This makes for high availability and creates another layer of backups for ultimate end user—the customer. In effect, cloud services create a layered disaster recovery strategy to ensure that the customer is never at a loss.
Interestingly, Cloud based disaster recovery strategies are being constantly tested and they require little or no special efforts on the part of the customer. With increased enterprise mobility and spread of the organization, the data stored in the Cloud or in local servers, is constantly accessed, shared and collaborated upon. When a single point of access fails, the customer is automatically switched to another remote server in the Cloud, local server, hot site or disaster recovery site without a pause. Users can download a single file or folder or an entire database or contents of an entire server from wherever they are—whatever the time or the day or night. All they need is an Internet connection and sufficient bandwidth for recovery. This precludes use of any kind of disaster recovery specific testing exercises.
The rationale for the Cloud based data protection is self evident!