VMware VCENTER SERVER 4.0 - GETTING STARTED UPDATE 1 Specifications Page 123
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Prepare Clusters for AMD Processors Without 3DNow!
Future generations of AMD processors might not include 3DNow!™ CPU instructions. vCenter Server
provides an EVC mode that masks the 3DNow! instructions from virtual machines, allowing you to prepare
clusters for the introduction of AMD hosts without 3DNow! instructions.
Processors without the 3DNow! instructions will not be vMotion-compatible with older processors that have
the 3DNow! instructions, unless an EVC mode or CPU compatibility mask is used to mask these instructions.
The AMD Opteron Gen. 3 (no 3DNow!) EVC mode masks the 3DNow! instructions from virtual machines.
You can apply this EVC mode to EVC clusters containing only AMD Opteron Generation 3 hosts to allow these
clusters to maintain vMotion compatibility with future AMD Opteron hosts that might not have 3DNow!
instructions. Clusters containing AMD Opteron Generation 1 or AMD Opteron Generation 2 hosts cannot be
made vMotion-compatible with hosts that do not have 3DNow! instructions.
Prerequisites
Ensure that the cluster contains only hosts with AMD Opteron Generation 3 or newer processors.
Procedure
u
Enable the AMD Opteron Gen. 3 (no 3DNow!) EVC mode for your EVC cluster.
The steps to enable the EVC mode differ depending on whether you are creating a cluster or enabling the
mode on an existing cluster, and on whether the existing cluster contains powered-on virtual machines.
Option Description
Creating a new cluster
In the New Cluster wizard, enable EVC for AMD hosts and select the AMD
Opteron Gen. 3 (no 3DNow!) EVC mode.
Editing a cluster without powered-on
virtual machines
In the Cluster Settings dialog box, edit the VMware EVC settings and select
the AMD Opteron Gen. 3 (no 3DNow!) EVC mode.
Editing a cluster with powered-on
virtual machines
The AMD Opteron Gen. 3 (no 3DNow!) EVC mode cannot be enabled while
there are powered-on virtual machines in the cluster.
a Power-off any running virtual machines in the cluster, or migrate them
out of the cluster using vMotion.
Migrating the virtual machines out of the cluster with vMotion allows
you to delay powering off the virtual machines until a more convenient
time.
b In the Cluster Settings dialog box, edit the VMware EVC settings and
select the AMD Opteron Gen. 3 (no 3DNow!) EVC mode.
c If you migrated virtual machines out of the cluster, power them off and
cold migrate them back into the cluster.
d Power on the virtual machines.
You can now add hosts with AMD processors without 3DNow! instructions to the cluster and preserve vMotion
compatibility between the new hosts and the existing hosts in the cluster.
CPU Compatibility Masks
CPU compatibility masks allow per-virtual machine customization of the CPU features visible to a virtual
machine.
vCenter Server compares the CPU features available to a virtual machine with the CPU features of the
destination host to determine whether to allow or disallow migrations with vMotion.
Default values for the CPU compatibility masks are set by VMware to guarantee the stability of virtual
machines after a migration with vMotion.
Chapter 12 Migrating Virtual Machines
VMware, Inc. 123
- 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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