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This week we start a series on using the cloud for disaster recovery. Please share this with your IT Director.
A good reason for adopting the cloud is that you can design cloud-based solutions that are resilient and highly available, including fail-over to other geographic regions. They are resilient because solutions are automatically distributed over several data-centre zones.
One of the use cases for hybrid cloud is disaster recovery. A hybrid cloud is a combination of a private cloud, such as your on-premises data centre, and the public cloud.
In this series we explore the feasibility of using the cloud for disaster recovery of your on-premises information technology (IT).
Disaster recovery assumes the need to restore IT systems after a major disruption. A disaster in this sense means you have lost access to or use of the systems in their current location. This could be for many reasons. The facility’s buildings could be inaccessible due to flooding, earthquake, explosion or something as simple as loss of water, electrical or HVAC services. Loss of cooling water in a data centre can scram mainframes in as little as 90 seconds. Loss of water is also a health risk under most workplace health & safety regulations.
An IT disaster such as this will usually be in a larger context of widespread human, material, economic or environmental loss in the community.
In the event of a disaster, your business-continuity plan will identify the mission-critical systems, their priority for restoration and the time window in which they must be restored to service. This could range from minutes to a few hours.
Operationally, you will have an off-line data-backup routine with off-site storage to safeguard against data loss. Restoring from backups can take days or weeks. Off line means the backup is air gapped to protect data from ongoing attacks.
We will be discussing these strategies for disaster recovery.
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