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5 Keys to an Effective DR Plan

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Make use of data replication technologies The data replication process ensures data availability even when the virtual machine or hardware is down. As we noted earlier, it is necessary to consider the time it takes to backup data when coming up with the best DR plan. One working method includes utilizing data replication tools that transmit copies of data from one storage location to another. These storage locations can be done between two on-premise appliances or between applications across cloud networks. Data replication can be further broken down into two major types: ▪ Synchronous replication: The data is copied in real time and is ideal for organizations that require a reduced RTO. This method of replication is extremely reliable in the case of a disaster. ▪ Asynchronous replication: This method of replication uses a set schedule for when to make copies of the data. This method uses less bandwidth and can work over large geographic distances. Digging even deeper, there are several specific kinds of replication methods within each type: ▪ Host-based replication: File-based, asynchronous replication that pairs application servers with software to create copies of data from one site to another. ▪ Hypervisor-based replication: Asynchronous replication method that replicates the entire virtual machine (VM) and assists recovery by easing failover to the replicated copy of the primary system. ▪ Array-based replication: This type of replication uses built-in software in compatible storage arrays to replicate data synchronously or asynchronously. It's more robust and requires less coordination. ▪ Network-based replication: Data is replicated to multiple sites using asynchronous or synchronous replication. This method requires an additional storage appliance between arrays and servers but supports any host platform and can work with any array. Asking questions about the importance of RTO or RPO and defining how much bandwidth and investment the organization would like to put into disaster recovery processes can help define which kind of replication method will be ideal for the company. Not all replication technologies are equal in their capacities but all of them return value in their ability to make copies of crucial data. Not investing in them is a costly mistake. 3 9 oneneck.com 03

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