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I'm going to run virtual machine ( guest Linux & Windows ) on linux 64-bit distribution. I tired Open Suse with Xen but snapshot with xen aren't friendly. I will think about VirtualBox but on Centos 5.5 guest takes lots of CPU.

1. Which distribution should I take with VirtualBox (which is free of slow performance) ?

2. Maybe anyone know any other free virtualization solution as good as VirtualBox ? ( in terms of snapshot management )

Best regards, Xentri

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RedHat is the king of distros if we're strictly concerned with virtualization. Their Emerging Technology Group is the home of libvirt, virt-manager, virsh, qemu, kvm, and oVirt.

For simple snapshot maintenance you might be out of luck as I'm not currently aware of any gui snapshot management programs. The qemu-img command however has a simple command syntax for managing snapshots of your virtual machines.

snapshot [-l | -a snapshot | -c snapshot | -d snapshot] filename

Parameters to snapshot subcommand:
  'snapshot' is the name of the snapshot to create, apply or delete
  '-a' applies a snapshot (revert disk to saved state)
  '-c' creates a snapshot
  '-d' deletes a snapshot
  '-l' lists all snapshots in the given image

A RedHat system leverages the easy to use virt-manager gui application with the slightly more involved libvirt hypervisor to bring kvm+qemu virtualized quests to life.

Edit Not that RedHat/Fedora distros are the only ones out there including libvirt, kvm, qemu, etc. I'm just saying that RedHat/Fedora being the point of development for those technologies means you're getting the technologies on the platform they were developed around from the company they were developed in.

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