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Is there any cloud provider that offers such VMs? Seems incredibly simpler to fail over like that instead of implementing a userland procedure.
by dividuum 4y ago
Is there any cloud provider that offers such VMs? Seems incredibly simpler to fail over like that instead of implementing a userland procedure.
- electroly 4y agoYou can run VMware Cloud in AWS to get this, but it's not as useful as it sounds: you can't have the pair of fault tolerant instances across regions or even AZs. You still need another plan for recovering from region or AZ failures, and if you need that, why not just also use that plan for intra-AZ failures instead of shelling out for VMware?
- nolist_policy 4y agoThe COLO effort is driven mainly by Intel China and they are currently deploying it at some Chinese cloud provider AFAIK. Unfortunately, as cool as VMWare FT and QEMU COLO are, you need high-bandwith and low-latency links between the nodes and still they increase latency and reduce performance a lot. And in 99.99% of cases just replicating the disk and restarting the VMs in case of a node failure is good enough.