Citrix Systems 5.6 User Manual
iv
Creating a resource pool ............................................................................................................. 20
Creating heterogeneous resource pools .......................................................................................... 21
Adding shared storage ................................................................................................................ 21
Removing a XenServer host from a resource pool ............................................................................. 22
High Availability .......................................................................................................................... 23
HA Overview ..................................................................................................................... 23
Overcommitting ......................................................................................................... 23
Overcommitment Warning ............................................................................................ 23
Host Fencing ............................................................................................................ 23
Configuration Requirements .................................................................................................. 24
Restart priorities ................................................................................................................ 24
Enabling HA on a XenServer pool .................................................................................................. 25
Enabling HA using the CLI ................................................................................................... 25
Removing HA protection from a VM using the CLI ..................................................................... 26
Recovering an unreachable host ........................................................................................... 26
Shutting down a host when HA is enabled .............................................................................. 26
Shutting down a VM when it is protected by HA ....................................................................... 26
Host Power On ......................................................................................................................... 27
Powering on hosts remotely ................................................................................................. 27
Using the CLI to Manage Host Power On ............................................................................... 27
To enable Host Power On using the CLI ......................................................................... 28
To turn on hosts remotely using the CLI .......................................................................... 28
Configuring a Custom Script for XenServer’s Host Power On Feature ............................................. 28
Key/Value Pairs ......................................................................................................... 28
host.power_on_mode .......................................................................................... 28
host.power_on_config ......................................................................................... 29
Sample Script ........................................................................................................... 29