Install Guide

7 Citrix XenServer with Dell SC Series Storage Configuration and Deployment | 3132-CD-V
Storage Repositories (SRs)*: A Storage Repository is a particular storage target, in which virtual machine
(VM) Virtual Disk Images (VDIs) are stored.
Virtual Block Devices (VBDs)*: Virtual Block Devices are connector objects (similar to the PBD described
previously) that allows mappings between VDIs and VMs. In addition to providing a mechanism for attaching
(also called plugging) a VDI into a VM, VBDs allow for the fine-tuning of parameters regarding Quality of
Service (QoS), statistics, and the bootability of a given VDI.
Virtual Disk Images (VDIs)*: A Virtual Disk Image is a storage abstraction which represents a virtual hard
disk drive in a VM. VDIs are the fundamental unit of virtualized storage in XenServer. VDIs are persistent, on-
disk objects that exist independently of XenServer hosts.
Virtual LAN (VLAN): A method of virtualizing a LAN to make it appear as an isolated physical network.
VLANs can reduce the size of and isolate broadcast domains. VLANs still share resources from the same
physical switch and do not provide any additional QoS services such as minimum bandwidth, quality of a
transmission, or guaranteed delivery.
Virtual machine (VM)*: A virtual machine (VM) is a computer composed entirely of software that can run its
own operating system and applications as if it were a physical computer. A VM behaves exactly like a
physical computer and contains its own virtual (software-based) CPU, RAM, hard disk, and NIC.