It is an interesting point to discuss. I am taking example of Azure here but it is applicable to other Public Clouds as well.
Azure Site Recovery is great native tool which helps us enable disaster recovery (DR) by replicating VMs to another region with few clicks. Microsoft allows you to turn the VM ON during the disaster recovery or whenever you want to. It helps you saving the running cost of VMs for the DR set up. However, Can Microsoft Turn all the VM On in the secondary region if a region fails? How many of you thought about that scenario?
My concerns around this grew more and more last year during the early covid19 period when utilization peaked to a new height. There were lot cases reported that organizations were unable to create new VMs as Microsoft data centers including Azure region were running out of resources due sudden usage spike across the world. What would happen if thousands of customers in a region wanted to start their VMs in their secondary Azure region which results starting lakhs VMs on the same day.
Continue reading “Can Public Cloud Turn All Your Protected VMs ON in another Region during the Region Fail-over?”
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