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
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Storage DRS migrates the virtual disks using vMotion according to the rule, even if the migration is for
a mandatory reason such as putting a datastore in maintenance mode.
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If the virtual machine's virtual disk violates the rule, Storage DRS makes migration recommendations
to correct the error or reports the violation as a fault if it cannot make a recommendation that will
correct the error.
No inter-VM anti-affinity rules are defined by default.
Procedure
1 Browse to the datastore cluster in the vSphere Client.
2 Click the Configure tab and click Configuration.
3 Select VM/Host Rules.
4 Click Add.
5 Type a name for the rule.
6 From the Type menu, select VM anti-affinity.
7 Click Add.
8 Click Select Virtual Machine.
9 Select at least two virtual machines and click OK.
10 Click OK to save the rule.
Create Intra-VM Anti-Anity Rules
You can create a VMDK anti-affinity rule for a virtual machine that indicates which of its virtual disks must
be kept on different datastores.
VMDK anti-affinity rules apply to the virtual machine for which the rule is defined, not to all virtual
machines. The rule is expressed as a list of virtual disks that are to be separated from one another.
If you attempt to set an intra-VM anti-affinity rule and an intra-VM affinity rule for a virtual machine,
vCenter Server rejects the most recently defined rule.
If a virtual machine is subject to a VMDK anti-affinity rule, the following behavior applies:
n
Storage DRS places the virtual machine's virtual disks according to the rule.
n
Storage DRS migrates the virtual disks using vMotion according to the rule, even if the migration is for
a mandatory reason such as putting a datastore in maintenance mode.
n
If the virtual machine's virtual disk violates the rule, Storage DRS makes migration recommendations
to correct the error or reports the violation as a fault if it cannot make a recommendation that will
correct the error.
No intra-VM anti-affinity rules are defined by default.
vSphere Resource Management
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