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Swapfile Location Compatibility
Virtual machine swapfile location affects vMotion compatibility in different ways depending on the version
of ESXi running on the virtual machine's host.
Virtual machines on hosts running ESX Server 3.0.x have a virtual machine swap file located with the virtual
machine configuration file. Virtual machines on these hosts can be migrated with vMotion only if the
destination host can access the VMFS volume where the swap file is located.
You can configure ESX 3.5 or ESXi 3.5 or later hosts to store virtual machine swapfiles in one of two locations:
with the virtual machine configuration file, or on a local swapfile datastore specified for that host. You can also
set individual virtual machines to have a different swapfile location from the default set for their current host.
The location of the virtual machine swapfile affects vMotion compatibility as follows:
n
Migrations between hosts running ESX/ESXi version 3.5 and later: Migrations with vMotion and
migrations of suspended and powered-off virtual machines are allowed.
During a migration with vMotion, if the swapfile location specified on the destination host differs from
the swapfile location specified on the source host, the swapfile is copied to the new location. This can result
in slower migrations with vMotion. If the destination host cannot access the specified swapfile location,
it stores the swapfile with the virtual machine configuration file.
n
Migrations between a host running ESX/ESXi version 3.5 and later and a host running an earlier version
of ESX: Migrations of suspended and powered-off virtual machines are allowed. If the virtual machine is
configured to use a local swapfile datastore, attempting to migrate it to a host that does not support this
configuration produces a warning, but the migration can proceed. When the virtual machine is powered
on again, the swapfile is located with the virtual machine.
Migrations with vMotion are not allowed unless the destination swapfile location is the same as the source
swapfile location. In practice, this means that virtual machine swapfiles must be located with the virtual
machine configuration file.
See the vSphere Client online Help for more information on configuring swapfile policies.
Migrating Virtual Machines with Snapshots
Migration of virtual machines with snapshots is possible if the virtual machine resides on shared storage
accessible to source and destination hosts.
Migrating a virtual machine with snapshots is permitted, regardless of the virtual machine power state, as long
as the virtual machine is being migrated to a new host without moving its configuration file or disks. (The
virtual machine must reside on shared storage accessible to both hosts.)
If the migration involves moving the configuration file or virtual disks, the following additional restrictions
apply:
n
The starting and destination hosts must be running ESX 3.5 or ESXi 3.5 or later.
n
All of the virtual machine files and disks must reside in a single directory, and the migrate operation must
move all the virtual machine files and disks to a single destination directory.
Reverting to a snapshot after migration with vMotion might cause the virtual machine to fail, because the
migration wizard cannot verify the compatibility of the virtual machine state in the snapshot with the
destination host. Failure occurs only if the configuration in the snapshot uses devices or virtual disks that are
not accessible on the current host, or if the snapshot contains an active virtual machine state that was running
on hardware that is incompatible with the current host CPU.
Chapter 12 Migrating Virtual Machines
VMware, Inc. 115
- Update 1 1
- ESXi 5.0 1
- EN-000775-01 1
- 2 VMware, Inc 2
- Contents 3
- 4 VMware, Inc 4
- VMware, Inc. 5 5
- 6 VMware, Inc 6
- Management 7
- 8 VMware, Inc 8
- Updated Information 9
- 10 VMware, Inc 10
- Virtualization Basics 11
- 12 VMware, Inc 12
- VMware, Inc. 13 13
- 14 VMware, Inc 14
- VMware, Inc. 15 15
- 16 VMware, Inc 16
- VMware, Inc. 17 17
- 18 VMware, Inc 18
- VMware, Inc 19
- 20 VMware, Inc 20
- VMware, Inc. 21 21
- 22 VMware, Inc 22
- Using the vSphere Client 3 23
- Panel Sections 24
- View Virtual Machine Console 25
- Using Lists 26
- Custom Attributes 27
- Select Objects 28
- Install Plug-Ins 29
- Disable and Enable Plug-Ins 29
- Remove Plug-Ins 29
- Save vSphere Client Data 30
- Working with Active Sessions 30
- VMware, Inc. 31 31
- 32 VMware, Inc 32
- Host Configuration 33
- Configuring vCenter Server 33
- 34 VMware, Inc 34
- VMware, Inc. 35 35
- 36 VMware, Inc 36
- Configure Runtime Settings 37
- 38 VMware, Inc 38
- Configure SNMP Settings 39
- View Ports Settings 39
- Configure Timeout Settings 40
- Configure Logging Options 40
- VMware, Inc. 41 41
- Configure SSL Settings 42
- Configure Advanced Settings 42
- VMware, Inc. 43 43
- 44 VMware, Inc 44
- VMware, Inc. 45 45
- 46 VMware, Inc 46
- Appliance 47
- 48 VMware, Inc 48
- VMware, Inc. 49 49
- 50 VMware, Inc 50
- 52 VMware, Inc 52
- VMware, Inc. 53 53
- 54 VMware, Inc 54
- VMware, Inc. 55 55
- 56 VMware, Inc 56
- Organizing Your Inventory 6 57
- Create Datacenters 58
- Add Hosts 58
- Create Clusters 59
- Create Resource Pools 60
- Create Datastores 61
- Create Host-Wide Networks 62
- VMware, Inc. 63 63
- 64 VMware, Inc 64
- Add a Distributed Port Group 65
- 66 VMware, Inc 66
- 68 VMware, Inc 68
- Licensing for ESXi 5.0 Hosts 69
- 70 VMware, Inc 70
- Calculating the vRAM Usage 71
- Compliance Rules 71
- Solution Licensing 72
- Example: Standalone Scenario 73
- About the License Portal 74
- Managing Licenses 75
- View License Information 76
- VMware, Inc. 77 77
- Export License Information 78
- VMware, Inc. 79 79
- 80 VMware, Inc 80
- Viewing License Use 81
- 82 VMware, Inc 82
- VMware, Inc. 83 83
- Details for a License Key 84
- Export a License Use Report 85
- 86 VMware, Inc 86
- VMware, Inc. 87 87
- 88 VMware, Inc 88
- System Log Files 8 89
- External System Logs 90
- Export System Log Files 90
- Chapter 8 System Log Files 91
- VMware, Inc. 91 91
- Collecting Log Files 92
- Collect vSphere Log Files 93
- Collect ESXi Log Files 93
- ESXi VMkernel Files 93
- 94 VMware, Inc 94
- Managing Tasks 95
- View Recent Tasks 96
- View Scheduled Tasks 96
- Cancel a Task 97
- Schedule Tasks 97
- Create a Scheduled Task 98
- Canceling Scheduled Tasks 99
- Change or Reschedule a Task 100
- Remove a Scheduled Task 100
- Managing Events 101
- Filter the Events List 102
- Export Events Data 103
- Trigger and Alarm on an Event 103
- Report Errors to VMware 104
- Components 10 105
- Starting vCenter Server 106
- Disconnect a Managed Host 107
- Remove a Host from a Cluster 108
- VMware, Inc. 109 109
- 110 VMware, Inc 110
- Migrating Virtual Machines 12 111
- Cold Migration 112
- Migration with vMotion 113
- 114 VMware, Inc 114
- VMware, Inc. 115 115
- 116 VMware, Inc 116
- CPU Compatibility and EVC 117
- CPU Families and Feature Sets 118
- EVC Requirements 119
- Create an EVC Cluster 120
- VMware, Inc. 121 121
- 122 VMware, Inc 122
- CPU Compatibility Masks 123
- 124 VMware, Inc 124
- VMware, Inc. 125 125
- 126 VMware, Inc 126
- VMware, Inc. 127 127
- 4 Select a disk format 128
- VMware, Inc. 129 129
- 130 VMware, Inc 130
- VMware, Inc. 131 131
- 132 VMware, Inc 132
- Storage vMotion Examples 133
- Network Limits 134
- Datastore Limits 134
- Host Limits 135
- 136 VMware, Inc 136
- Using vCenter Maps 13 137
- Map Icons 138
- View vCenter Maps 139
- Print vCenter Maps 140
- Export vCenter Maps 140
- Numerics 141
- 142 VMware, Inc 142
- VMware, Inc. 143 143
- 144 VMware, Inc 144
- VMware, Inc. 145 145
- 146 VMware, Inc 146
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