Free Software Magazine: Linux-VServer

“Everyone is eager to virtualize their working environment to
take advantage of the abstraction layer it provides. Some may
require resource isolation for enhanced security, others may need
development environments for testing and debugging. Whatever your
needs are, virtualization will save you resources through utilizing
them more efficiently. This is done by exploiting synergies built
on proven technologies, improving availability and reducing
downtime, adding scalability through duplication and gaining a
certain degree of hardware independence…”

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