6.5.1
Table Of Contents
- vSphere Resource Management
- Contents
- About vSphere Resource Management
- Getting Started with Resource Management
- Configuring Resource Allocation Settings
- CPU Virtualization Basics
- Administering CPU Resources
- Memory Virtualization Basics
- Administering Memory Resources
- Configuring Virtual Graphics
- Managing Storage I/O Resources
- Managing Resource Pools
- Creating a DRS Cluster
- Using DRS Clusters to Manage Resources
- Creating a Datastore Cluster
- Initial Placement and Ongoing Balancing
- Storage Migration Recommendations
- Create a Datastore Cluster
- Enable and Disable Storage DRS
- Set the Automation Level for Datastore Clusters
- Setting the Aggressiveness Level for Storage DRS
- Datastore Cluster Requirements
- Adding and Removing Datastores from a Datastore Cluster
- Using Datastore Clusters to Manage Storage Resources
- Using NUMA Systems with ESXi
- Advanced Attributes
- Fault Definitions
- Virtual Machine is Pinned
- Virtual Machine not Compatible with any Host
- VM/VM DRS Rule Violated when Moving to another Host
- Host Incompatible with Virtual Machine
- Host Has Virtual Machine That Violates VM/VM DRS Rules
- Host has Insufficient Capacity for Virtual Machine
- Host in Incorrect State
- Host Has Insufficient Number of Physical CPUs for Virtual Machine
- Host has Insufficient Capacity for Each Virtual Machine CPU
- The Virtual Machine Is in vMotion
- No Active Host in Cluster
- Insufficient Resources
- Insufficient Resources to Satisfy Configured Failover Level for HA
- No Compatible Hard Affinity Host
- No Compatible Soft Affinity Host
- Soft Rule Violation Correction Disallowed
- Soft Rule Violation Correction Impact
- DRS Troubleshooting Information
- Cluster Problems
- Load Imbalance on Cluster
- Cluster is Yellow
- Cluster is Red Because of Inconsistent Resource Pool
- Cluster Is Red Because Failover Capacity Is Violated
- No Hosts are Powered Off When Total Cluster Load is Low
- Hosts Are Powered-off When Total Cluster Load Is High
- DRS Seldom or Never Performs vMotion Migrations
- Host Problems
- DRS Recommends Host Be Powered on to Increase Capacity When Total Cluster Load Is Low
- Total Cluster Load Is High
- Total Cluster Load Is Low
- DRS Does Not Evacuate a Host Requested to Enter Maintenance or Standby Mode
- DRS Does Not Move Any Virtual Machines onto a Host
- DRS Does Not Move Any Virtual Machines from a Host
- Virtual Machine Problems
- Cluster Problems
- Index
Adding Virtual Machines to a Cluster
You can add a virtual machine to a cluster in a number of ways.
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When you add a host to a cluster, all virtual machines on that host are added to the cluster.
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When a virtual machine is created, the New Virtual Machine wizard prompts you for the location to
place the virtual machine. You can select a standalone host or a cluster and you can select any resource
pool inside the host or cluster.
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You can migrate a virtual machine from a standalone host to a cluster or from a cluster to another
cluster using the Migrate Virtual Machine wizard. To start this wizard, right-click the virtual machine
name and select Migrate.
Move a Virtual Machine to a Cluster
You can move a virtual machine to a cluster.
Procedure
1 Find the virtual machine in the vSphere Web Client inventory.
a To nd a virtual machine, select a data center, folder, cluster, resource pool, or host.
b Click the VMs tab.
2 Right-click on the virtual machine and select Move To.
3 Select a cluster.
4 Click OK.
Removing Virtual Machines from a Cluster
You can remove virtual machines from a cluster.
You can remove a virtual machine from a cluster in two ways.
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When you remove a host from a cluster, all of the powered-o virtual machines that you do not migrate
to other hosts are removed as well. You can remove a host only if it is in maintenance mode or
disconnected. If you remove a host from a DRS cluster, the cluster can become yellow because it is
overcommied.
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You can migrate a virtual machine from a cluster to a standalone host or from a cluster to another
cluster using the Migrate Virtual Machine wizard. To start this wizard right-click the virtual machine
name and select Migrate.
Move a Virtual Machine Out of a Cluster
You can move a virtual machine out of a cluster.
Procedure
1 Find the virtual machine in the vSphere Web Client inventory.
a To nd a virtual machine, select a data center, folder, cluster, resource pool, or host.
b Click the VMs tab.
2 Right-click the virtual machine and select Migrate.
3 Select Change datastore and click Next.
Chapter 11 Using DRS Clusters to Manage Resources
VMware, Inc. 75