Other documentation shipped with this release includes: • XenServer Installation Guide provides … VMs are created using templates: •using a complete pre-configured template (Debian … Table of Contents 1. About this document ….. 1 Overview ….. 1 How this Guide relates to other documentation …..
Chapter 2. Creating VMs This chapter provides an overview of how VMs are created and lists virtual memory and virtual disk size minimums, describes the differences in virtual device support for the members of the XenServer product family. This chapter also discusses physical to virtual conversion (P2V), cloning templates, and importing previously-exported VMs. Overview VMs are created from templates . A template is a “gold image” that contains all the various configuration settings to instantiate a specific VM. XenServer ships with a base set of templates, which range from generic “raw” VMs that can boot an OS vendor installation CD (Windows) or run an installation from a network repository (Red Hat Enterprise Linux, SUSE Linux Enterprise 10) to complete pre-configured OS instances (Debian Etch and Sarge). Different operating systems require slightly different settings in order to run at their best. XenServer templates are tuned to maximize operating system performance. The Linux templates create Pure Virtual (PV) guests, as opposed to the HVM guests created by the Windows and Other Install Media templates. Other Install Media template Linux installations are not supported. There are three basic methods by which VMs are created using templates: •using a complete pre-configured template (Debian Sarge and Etch Linux) •Installing from a CD or an ISO image onto the appropriate template (Windows 2000 SP4/Windows 2003 Server/Windows XP SP2 or SP3/Windows Vista, RHEL 5.0, CentOS 5.0) •Installing from vendor media on a network installation server directly onto a template (Red Hat Enterprise Linux 4.5+ and 5.0+, and SUSE Linux Enterprise Server 10 SP1) Creating VMs by installing Windows operating systems onto the appropriate templates is described in Chapter 3, Installing Windows VMs . Creating VMs by installing Linux operating systems onto the appropriate templates is described in Chapter 4, Installing Linux VMs . Additionally, VMs can be created by •performing a physical to virtual (P2V) conversion on an existing physical server (Red Hat Enterprise Linux 3.6, 3.8, 4.1-4.4, and SUSE Linux Enterprise Server 9 SP2/3/4) •importing an existing, exported VM •converting an existing VM to a template These methods are described in this chapter. Virtual memory and disk size limits In general, when installing VMs, be sure to follow the memory and disk space guidelines of the operating system and any relevant applications that you want to run when allocating resources such as memory and disk space. Note that individual versions of the operating systems may also impose their own maximum limits on the amount of memory supported (for example, for licensing reasons).