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The specifics depend on which exact virtualization solution you use, but the idea is that you have a virtual farm, where there are a number of physical hosts with several virtual machines each. You then use some of the efficiency you gained by not needing a physical host for every VM so that you have enough overhead left to cover in the case where a physical ...


All virtual servers running on a physical host will go offline if the host has any sort of failure. That said, most platforms offer a high-availability solution for a single VM. Other times a system is built with multiple nodes to prevent service disruption in the event that one node goes down. If two VM nodes make up a highly available service, it is ...


Visit your BIOS config page and check processor settings. Do you see a value of "4" for "Number of Cores per Processor"? Also, can you provide the build number of your ESXi installation? This could also be a bug (less likely).


You are right with your assumption that if the physical machine fails also the VMs get unavailable. But openstack can take care of that and start the VMs of the failed physical server on a other server or you can use a hypervisor system which is already distributed, I think vsphere can do that. You should read the openstack documentation on HA for more ...


Regarding your question - yes, you will loose access for all machines within this physical host. Of course, it depends which component failed. If it is disk - it is kind of problem, if it motherboard - it is much easier. In general hardware recovery is easier as hypervisor is hardware-agnostic. At this point of time there are a lot of vendor specific ...


Why not give Docker - Build, Ship, and Run Any App, Anywhere a try?


Yes, this can be done, as long as the application-level protocol in use knows which name was connected to. HTTP knows this, because of the Host: header. TLS knows this (now), because of the "Server Name Indication" extension. I believe FTP can know this, based on some protocol extension, but if you're still using FTP, you are doomed. If the protocol ...

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