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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
About vSphere Resource Management
vSphere Resource Management describes resource management for VMware
®
ESXi and vCenter
®
Server environments.
This documentation focuses on the following topics.
n
Resource allocation and resource management concepts
n
Virtual machine attributes and admission control
n
Resource pools and how to manage them
n
Clusters, vSphere
®
Distributed Resource Scheduler (DRS), vSphere Distributed Power Management
(DPM), and how to work with them
n
Datastore clusters, Storage DRS, Storage I/O Control, and how to work with them
n
Advanced resource management options
n
Performance considerations
Intended Audience
This information is for system administrators who want to understand how the system manages resources
and how they can customize the default behavior. It’s also essential for anyone who wants to understand
and use resource pools, clusters, DRS, datastore clusters, Storage DRS, Storage I/O Control, or vSphere
DPM.
This documentation assumes you have a working knowledge of VMware ESXi and of vCenter Server.
Note In this document, "Memory" can refer to physical RAM or Persistent Memory.
vSphere Client and vSphere Web Client
The instructions in this guide are specific primarily to the vSphere Client (an HTML5-based GUI). Most
instructions also apply to the vSphere Web Client (a Flex-based GUI).
VMware, Inc.
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