Citrix Systems 6

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