Practical Cloud Knowledge: Install, Configure, and Manage - Deploying and Managing a Cloud Infrastructure - page 207

large building. Both are physical, yet the apartment simulates the multitenancy found in
public cloud platforms or simply the basic fact that multiple virtual machines live in the
same host machine.
There are a few methods to do this. The first and most basic one is manual migration:
1. Someone has to literally install all of the required applications into the virtual machine.
2. Configure the applications exactly like the original.
3. Copy all of the files from the physical machine to the virtual machine.
A more reliable method would be using a semi-automated or automated tool that is
provided by your service provider or hypervisor vendor.
Semi-automated Tools A semi-automated tool would require some human intervention
with settings and the conversion itself, with the end result usually being a virtual machine
file or template that is ready to be created into a virtual machine. Here are a few examples
of semi-automated P2V solutions:
■ VMware vCenter Converter
■ Microsoft System Center Virtual Machine Manager
■ Sysinternals Disk2vhd
Fully automated Tools With fully automated P2V converters, the conversion could happen
online, and the end result is usually an already fully usable and running virtual machine.
Here are some examples of fully automated P2V solutions:

vContinuum by InImage Systems

■

Symantes System Recovery

■

Leostream

■

Quest vConverter

■

Virtual to Virtual
Virtual to virtual (V2V) migration can be considered interhost migration because there
would be no other explanation for moving a virtual machine into another virtual machine.
Otherwise it would simply be cloning and not actual migration. In any case, this type of
migration would simply involve cloning a virtual machine and then activating that clone on
a different environment or host, and then the original can be retired.

Virtual to Physical
Virtual to physical (V2P) migration is the opposite of P2V. A virtual machine, presumably
a server, is migrated into a physical server, possibly so that it can serve using a more power-
ful configuration than a virtual machine can offer. The process for doing this differs for
Windows and Linux guest operating systems and should be provided by your service pro-
vider or infrastructure provider.