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Hosts and Resource Pools Overview .................................................................................. 22
Requirements for Creating Resource Pools ......................................................................... 22
Creating a Resource Pool .................................................................................................. 23
Creating Heterogeneous Resource Pools ............................................................................ 23
Adding Shared Storage ...................................................................................................... 24
Removing a XenServer Host from a Resource Pool .............................................................. 25
Preparing a Pool of XenServer Hosts for Maintenance ........................................................ 25
High Availability ................................................................................................................ 26
HA Overview ............................................................................................................ 26
Overcommitting ................................................................................................ 26
Overcommitment Warning ................................................................................ 27
Host Fencing .................................................................................................... 27
Configuration Requirements ...................................................................................... 27
Restart Priorities ....................................................................................................... 28
Enabling HA on a XenServer Pool ...................................................................................... 29
Enabling HA Using the CLI ......................................................................................... 29
Removing HA Protection from a VM using the CLI ...................................................... 29
Recovering an Unreachable Host ............................................................................... 30
Shutting Down a host When HA is Enabled ................................................................ 30
Shutting Down a VM When it is Protected by HA ....................................................... 30
Host Power On ................................................................................................................. 30
Powering on Hosts Remotely ..................................................................................... 30
Using the CLI to Manage Host Power On ................................................................... 31
To Enable Host Power On Using the CLI ............................................................. 31
To Turn on Hosts Remotely Using the CLI ........................................................... 31
Configuring a Custom Script for XenServer's Host Power On Feature ............................ 31
Key/Value Pairs ................................................................................................. 32
host.power_on_mode ............................................................................... 32
host.power_on_config .............................................................................. 32
Sample Script ................................................................................................... 32
Storage ............................................................................................................. 34