VMware VCENTER SERVER 4.0 - GETTING STARTED UPDATE 1 Specifications Page 111

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Migrating Virtual Machines 12
Migration is the process of moving a virtual machine from one host or storage location to another. Copying a
virtual machine creates a new virtual machine. It is not a form of migration.
In vCenter Server, you have the following migration options:
Cold Migration
Moving a powered-off virtual machine to a new host. Optionally, you can
relocate configuration and disk files to new storage locations. You can use cold
migration to move virtual machines from one datacenter to another.
Migrating a Suspended
Virtual Machine
Moving a suspended virtual machine to a new host. Optionally, you can
relocate configuration and disk files to new storage location. You can migrate
suspended virtual machines from one datacenter to another.
Migration with vMotion
Moving a powered-on virtual machine to a new host. Migration with vMotion
allows you to move a virtual machine to a new host without any interruption
in the availability of the virtual machine. You cannot use vMotion to move
virtual machines from one datacenter to another. Some configurations include
Metro vMotion, a feature that enables reliable migrations between hosts
separated by high network round-trip latency times. Metro vMotion is
automatically enabled when the appropriate license is installed. No user
configuration is necessary.
Migration with Storage
vMotion
Moving the virtual disks or configuration file of a powered-on virtual machine
to a new datastore. Migration with Storage vMotion allows you to move a
virtual machine’s storage without any interruption in the availability of the
virtual machine.
Both migration of a suspended virtual machine and migration with vMotion are sometimes referred to as “hot
migration”, because they allow migration of a virtual machine without powering it off. Migration with vMotion
is sometimes referred to as "live migration".
You can move virtual machines manually or set up a scheduled task to perform the cold migration.
Cloning a virtual machine or copying its disks and configuration file creates a new virtual machine. Cloning
is not a form of migration.
This chapter includes the following topics:
n
“Cold Migration,” on page 112
n
“Migrating a Suspended Virtual Machine,” on page 112
n
“Migration with vMotion,” on page 113
n
“Migration with Storage vMotion,” on page 116
n
“CPU Compatibility and EVC,” on page 117
VMware, Inc.
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