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High Availability & Disaster Recovery

High availability focuses on designing systems that continue to operate reliably, even when individual components fail. The aim is to minimise disruption by building resilience into the day-to-day operation of critical services.

Disaster recovery addresses a different scenario. It is concerned with how systems and data are restored following a significant incident or outage that cannot be avoided. A well-designed disaster recovery plan ensures that, when the unexpected does occur, services can be recovered in a controlled and predictable manner.

High Availability & Disaster Recovery
20 Years Supporting Businesses and Schools

Every organisation can benefit from both high availability and disaster recovery, but the level of investment needs to be proportionate to cost and aligned with risk tolerance.

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High Availability

High availability, in particular, involves a balance. Increasing system uptime beyond a certain point becomes progressively more expensive, and the final gains often come at a disproportionate cost. In most cases, the right approach is to agree what level of downtime is acceptable in practical terms and design systems accordingly. For example, if a short interruption can be absorbed into normal operations, there is little value in investing heavily to reduce downtime by a few additional minutes. Conversely, where extended outages would have a serious operational or financial impact, it is both practical and affordable to design systems that significantly reduce that risk.

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Disaster Recovery

Disaster Recovery

Disaster recovery is typically driven by the size, complexity, and nature of an organisation. It extends beyond IT infrastructure alone and includes processes, data, and ways of working. At its simplest, this may involve securely backing up systems and data off-site, with a clear and tested method for restoration. At the other end of the spectrum, it can involve a fully prepared secondary environment that can be brought online if a major incident occurs.