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OpenVZ On Debian Etch For Webservers

How to set up an OpenVZ server using Debian

This guide is written during an install of a Supermicro machine with two dual-core Opterons (64-bit), two identical disks (for RAID) and a load of memory.

Why OpenVZ and not XEN or the recent KVM kernel module? Well, XEN is not very stable for 64-bit architectures (yet), and it comes with quite a bit of overhead (every VM runs its own kernel) due to its complexity. KVM is very simple but restricts you to run a kernel as one process, so the VM cannot benefit from multi core systems.

With OpenVZ only one kernel is run for the host environment and all the VMs, this makes the setup lean and a good candidate for webservers.


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