6.7

Table Of Contents
This chapter includes the following topics:
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Cold Migration
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Migration with vMotion
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Migration with Storage vMotion
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CPU Compatibility and EVC
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Migrate a Powered-Off or Suspended Virtual Machine in the vSphere Web Client
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Migrate a Virtual Machine to a New Compute Resource
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Migrate a Virtual Machine to a New Compute Resource and Storage in the vSphere Web Client
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Migrate a Virtual Machine to New Storage in the vSphere Web Client
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Place vMotion Traffic on the vMotion TCP/IP Stack of an ESXi Host
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Place Traffic for Cold Migration, Cloning, and Snapshots on the Provisioning TCP/IP Stack
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Limits on Simultaneous Migrations
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About Migration Compatibility Checks
Cold Migration
Cold migration is the migration of powered off or suspended virtual machines between hosts across
clusters, data centers, and vCenter Server instances. By using cold migration, you can also move
associated disks from one datastore to another.
You can use cold migration to have the target host checked against fewer requirements than when you
use vMotion. For example, if you use cold migration when a virtual machine contains a complex
application setup, the compatibility checks during vMotion might prevent the virtual machine from moving
to another host.
You must power off or suspend the virtual machines before you begin the cold migration process.
Migrating a suspended virtual machine is considered a cold migration because although the virtual
machine is powered on, it is not running.
You cannot implement a cold migration across different subnets.
CPU Compatibility Check During Cold Migration
If you attempt to migrate a powered off virtual machine that is configured with a 64-bit operating system to
a host that does not support 64-bit operating systems, vCenter Server generates a warning. Otherwise,
CPU compatibility checks do not apply when you migrate powered off virtual machines with cold
migration.
When you migrate a suspended virtual machine, the new host for the virtual machine must meet CPU
compatibility requirements. This requirement allows the virtual machine to resume execution on the new
host.
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