XenServer_Administrator's_Guide

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XenServer Administrator's Guide
5.5.0
Published November 2009
1.1 Edition
XenServer Administrator's Guide
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XenServer Administrator's Guide: Release 5.5.0
Published November 2009
Copyright © 2008 Citrix Systems, Inc.
Xen®, Citrix®, XenServer, XenCenter and logos are either registered trademarks or trademarks of Citrix Systems, Inc. in
the United States and/or other countries. Other company or product names are for informational purposes only and may be
trademarks of their respective owners.
This product contains an embodiment of the following patent pending intellectual property of Citrix Systems, Inc.:
1. United States Non-Provisional Utility Patent Application Serial Number 11/487,945, filed on July 17, 2006, and entitled “Using
Writeable Page Tables for Memory Address Translation in a Hypervisor Environment”.
2. United States Non-Provisional Utility Patent Application Serial Number 11/879,338, filed on July 17, 2007, and entitled “Track-
ing Current Time on Multiprocessor Hosts and Virtual Machines”.
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Table of Contents
1. Document Overview ........................................................................................................................................... 9
How this Guide relates to other documentation ................................................................................................. 9
2. XenServer hosts and resource pools .............................................................................................................. 11
Hosts and resource pools overview ................................................................................................................ 11
Requirements for creating resource pools ....................................................................................................... 11
Creating a resource pool ................................................................................................................................ 12
Adding shared storage ................................................................................................................................... 13
Installing and managing VMs on shared storage ............................................................................................. 13
Removing a XenServer host from a resource pool ........................................................................................... 14
High Availability ............................................................................................................................................. 15
HA Overview ......................................................................................................................................... 15
Configuration Requirements ................................................................................................................... 16
Restart priorities ..................................................................................................................................... 17
Enabling HA on a XenServer pool .................................................................................................................. 17
Enabling HA using the CLI ..................................................................................................................... 18
Removing HA protection from a VM using the CLI ................................................................................... 18
Recovering an unreachable host ............................................................................................................ 18
Shutting down a host when HA is enabled .............................................................................................. 19
Shutting down a VM when it is protected by HA ...................................................................................... 19
Authenticating users using Active Directory (AD) ............................................................................................. 19
Configuring Active Directory authentication .............................................................................................. 19
User authentication ................................................................................................................................ 21
Removing access for a user ................................................................................................................... 22
Leaving an AD domain .......................................................................................................................... 22
3. Storage ............................................................................................................................................................. 23
Storage Overview .......................................................................................................................................... 23
Storage Repositories (SRs) .................................................................................................................... 23
Virtual Disk Images (VDIs) ..................................................................................................................... 23
Physical Block Devices (PBDs) .............................................................................................................. 23
Virtual Block Devices (VBDs) ................................................................................................................. 24
Summary of Storage objects .................................................................................................................. 24
Virtual Disk Data Formats ...................................................................................................................... 24
Storage configuration ..................................................................................................................................... 26
Creating Storage Repositories ................................................................................................................ 26
Upgrading LVM storage from XenServer 5.0 or earlier ............................................................................. 27
LVM performance considerations ............................................................................................................ 27
Converting between VDI formats ............................................................................................................ 28
Probing an SR ....................................................................................................................................... 28

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