FreeBSD vs. Kernel-based Virtual Machine (KVM)

FreeBSD is an excellent choice to continue using older hardware and have it perform, it is a great choice for a UNIX based development environment. Although I haven't used it as a server, it is most suited for this - it would make an excellent, secure and robust server for and I would love to start using it for this as well.

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KVM is the best solution in the case you need to test and turn up any virtual environment with limited vCPU/RAM resources. The obvious area of its use is a network environment when we want to avoid being tied to one type of hardware/vendor and being able to swap from one instance to another with no downtimes. The use of a vSwitch (that supports VLAN tagging) is a significant bonus for network engineers that some other hypervisors do not provide.

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• stability
• security
• scalability

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• KVM is really good at providing fast and reliable virtualization for Linux guests
• Since KVM is a kernel module, every VM is a Linux process which can be managed by Linux system tools
• KVM integrates very well with the management framework libvirt, which is why KVM can be integrated in automation tools as well

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• Installation can be tricky for first timers
• You need to be comfortable using a command line terminal most of the time

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• KVM itself doesn't ship with a management interface
• KVM itself is a bit complicated to handle
• KVM needs Qemu to virtualize Windows guests

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It does the job and stays out of the way. The specifics of usability relies on the implementation, but with things like Icarus and libvirt, things are standardizing nicely.

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FreeBSD is the closest to the original BSD unix. This OS is currently used by vendors in the field of routing, switching, security as well as base OS for MAC devies.

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It is a very reliable solution that can be used for x86 architecture virtualization with low overhead. It is a free and open source software. Easy to use withOpenStack.

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• As FreeBSD is free - the ROI is at least the cost of some commercial Linux or Windows based OS (which can be very expensive)
• Allowed the re-use of older hardware that would have otherwise been disposed
• No cost development environment
• Opportunity for a no cost server setup also

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• Fast provisioning of new servers.
• Huge drop of the cost of servers compared to bare metal.
• Easy upgrades of resources, sometimes now even requiring a server restart.

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A de minimis incentive was given to thank the reviewer for their time. The incentive was not used to bias or drive a particular response, nor was the incentive contingent on a positive endorsement. More Info