SRM 5.0 Array-Based Replication Is the Flagship of VMware DR
SRM 5.0 array-based replication is the flagship of VMware DR and now provides automated failback, planned migration and an improved boot-sequence controller along with other enhancements that reduce VM configuration time.
Using the VMware-provided test environment, I saw the entire SRM 5.0 setup process and observed live implementation of all aspects of SRM 5.0. Among the new features that I observed was the new automated failback function, also called reprotection. Reprotection is only available when using array-based replication, not the new VR feature.
After running a test failover with SRM in the operating in the context of an executed recovery plan, I was able to failback to the original protected site. During tests of the fairly small and purpose-built test environment, this operation proceeded without problems.
Similarly, the planned migration or slow-and-careful execution of a recovery plan proceeded without problems. Planned migration could be useful after acquiring a company or when a known event, such as an approaching hurricane, makes it possible to deliberately move from one site to another. The biggest advantage of using the planned migration mode was that if errors were encountered, such as inconsistent network configurations, the migration stopped to allow for a correction. When the recovery plan was re-executed, it started at the error stop point.
SRM 5.0 has been improved compared with SRM 4.x by now supporting up to four VM boot-sequence priority levels. Boot-sequence priority is a fairly blunt way to govern how VMs are restarted at the recovery site, thus making products like VirtualSharps ReliableDR appealing for ensuring that business-critical applications come up in good working order. In tests, it was clear that IT managers who had been using SRM 4.x would benefit from the increased boot-order flexibility.
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