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Vinchin Blog The gist of a Virtualized Disaster Recovery.

The gist of a Virtualized Disaster Recovery.

2020-09-22

In recent years, many enterprises have been faced with a big problem: how to backup and restore their infrastructure, technology, and networks to ensure their business continuity.

A cost-effective disaster recovery solution can help enterprises get the maximum output with a certain amount of IT input, while well protecting their businesses from the impact of disaster events.

Let's look at the gist of a virtualized disaster recovery strategy


1. Restore capacity

It is important to consider capacity when developing a virtualization disaster recovery strategy. Businesses typically assume that capacity utilization will not exceed 100% when they recover. In fact, because the startup phase of a recovery pushes the system to extremes, the required capacity may exceed the production capacity. In addition, there is a lot of follow-up during the recovery process, which also requires capacity.


2. Supporting resources

While resilience is a key consideration, other factors supporting the production environment should also be taken into account. These elements include processor resources (storage, device interface, etc.), disk resources (storage array, storage site network SANs, disk cluster, etc.), peripherals (control unit, terminal, blade, etc.), infrastructure (external switch), and network connectivity (switch, bandwidth, etc.).


3. Resource independence, network redundancy, and scalability

One key to avoiding disaster recovery failures is to ensure that virtualized resources remain independent and do not need to rely on the primary production environment. Network redundancy means that access must be provided not only for internal users, but also for external users (such as customers, business partners, suppliers, and so on). Scalability is required to handle peak workloads for disaster recovery and production operations.


4. Recovery plan test

It is important to develop a virtualized disaster recovery strategy to consider effective testing of the plan. The tests should be conducted at a comprehensive system level to effectively understand the workload demands on virtualized resources over a given period of time while verifying the integrity of the business and the effectiveness of the infrastructure. Although partial functional tests are easier to arrange, they do not guarantee the authenticity of the test results, thus reducing the effectiveness of the tests.


5. Reset the workload plan

Both in the real world and during the walkthrough, a detailed plan should be in place during recovery to manage the changing workload throughout the process. The plan should include a formal schedule approved by the senior management, and alternative work plan for resource allocation during recovery, a daily backup process for offset workloads, and a tested recovery plan for restoring such work on alternate sites.


6. Disaster recovery risk control

The risk to the business should be taken into account when developing a virtualization disaster recovery strategy. Distance may be limited due to the inherent weaknesses of virtualization, but geographic diversity must be taken into account. The recovery site should be consistent with the risk tolerance clearly defined by the enterprise's existing risk aversion strategy, rather than as a result of meeting technical requirements.


7. Be clear about your workload

Before determining the specific resources that make up the virtual pool, it is important to understand the disaster recovery effort. Identify business priorities and critical points, and develop detailed plans related to processing flows, application integration and interdependence, and IT support modules to ensure the resiliency of a virtualized environment.


8. Rules for integrity

Strict system management rules, including issues, changes, events, configurations, and asset management, are a prerequisite for implementing any new virtualization disaster recovery strategy. This is critical to maintaining the integrity of the recovery environment, as well as the effectiveness of the final operation, monitoring, and maintenance of the virtualized resource pools.


9. Business and IT reporting

Tracking progress, passing status, and reporting results on disaster recovery projects are important outputs of all disaster recovery projects and are important to determine the impact of the significant investment in IT functional virtualization.


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  • Tag:
  • Virtualization

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