70-247 Series: Part 19

Configure the Fabric (27%)

Configure Host Groups

Host Groups can be used to group virtual machine hosts in meaningful ways. Generally host groups are grouped based on physical site location and resource allocation. Basing Host Groups on physical location is very important when using the logical networking features of VMM.

The following considerations must be made when planning a host group:

  • The following settings are configured at the host group level (but can be overridden if required):
    • Custom placement rules - Determines if properties of virtual machines must or should match properties of hosts, these include custom properties
    • Host reserve settings for placement - The amount of resources that are reserved for the host
    • Dynamic optimisation - Automatically balances virtual machine load within host cluster. Power optimisation can also be configured to power off Hyper-V hosts when load is low
    • Power optimisation - Can power down hosts that are not required during periods of low utilisation, for example, during the evening
    • Network resource inheritance
    • Storage allocation
    • Custom properties
  • User roles can be assigned at the host group level
  • Private clouds are created based on host groups

Create a Host Group

Creating a new Host Group is a two-step process:

  • Create the group
  • Name the group


Configure Host Group Properties

One you have created a Host Group, you will need to configure it's properties and add hosts to the group. One of the settings I think need to be changed right away are the Host Reserves. I would increase the disk space and memory settings.

Default Settings


My Settings (The settings I adjusted are highlighted below)


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