6.7
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
- Persistent Memory
- 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
7 Select one or more virtual machines.
8 Click the Automation Level column and select an automation level from the drop-down menu.
Option Description
Manual Placement and migration recommendations are displayed, but do not run until you
manually apply the recommendation.
Fully Automated Placement and migration recommendations run automatically.
Partially Automated Initial placement is performed automatically. Migration recommendations are
displayed, but do not run.
Disabled vCenter Server does not migrate the virtual machine or provide migration
recommendations for it.
9 Click OK.
Note Other VMware products or features, such as vSphere vApp and vSphere Fault Tolerance, might
override the automation levels of virtual machines in a DRS cluster. Refer to the product-specific
documentation for details.
Disable DRS
You can turn off DRS for a cluster.
When DRS is disabled, the cluster’s resource pool hierarchy and affinity rules are not reestablished when
DRS is turned back on. If you disable DRS, the resource pools are removed from the cluster. To avoid
losing the resource pools, save a snapshot of the resource pool tree on your local machine. You can use
the snapshot to restore the resource pool when you enable DRS.
Procedure
1 Browse to the cluster in the vSphere Client.
2 Click the Configure tab and click Services.
3 Under vSphere DRS, click Edit.
4 Deselect the Turn On vSphere DRS check box.
5 Click OK to turn off DRS.
6 (Optional) Choose an option to save the resource pool.
n
Click Yes to save a resource pool tree snapshot on a local machine.
n
Click No to turn off DRS without saving a resource pool tree snapshot.
Restore a Resource Pool Tree
You can restore a previously saved resource pool tree snapshot.
vSphere Resource Management
VMware, Inc. 79