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SQL Server 2008 Hyber V Unleashed - p 11

80 3 Planning, Sizing, and Architecting a Hyper-V Environment throughout the day. Typically, a user opens a file, works on it for a while, and then saves it. Even large graphics files and computer-aided design (CAD) files are opened, worked on for a while, and then saved. So, the processing demands are relatively low. In most cases, therefore, file server systems are good candidates for virtualization. However, do consider having the actual data for file servers written to a storage area network (SAN) or other storage system that can handle large sets of data. . Print servers—Print servers typically have bursts of data. | 80 3 Planning Sizing and Architecting a Hyper-V Environment throughout the day. Typically a user opens a file works on it for a while and then saves it. Even large graphics files and computer-aided design CAD files are opened worked on for a while and then saved. So the processing demands are relatively low. In most cases therefore file server systems are good candidates for virtualization. However do consider having the actual data for file servers written to a storage area network SAN or other storage system that can handle large sets of data. Print servers Print servers typically have bursts of data managed by the systems as users send print jobs to the print server the job is processed and then the job is sent to a printer. The print server then remains idle until another print job is sent. Although print servers don t fit into the category of no-brainer for virtualization and should be analyzed and tested they are usually good candidates for virtualization. Global catalog server The global catalog server in a Windows Active Directory environment is typically duplicated so that there are two or more servers in the environment hosting Active Directory data. However the decision to virtualize a global catalog server is one that requires some thought and planning. Typically a virtual host server is a member of the Active Directory domain so that a network administrator can manage the Hyper-V host . Usually however you don t want your host system as a member of a domain that the host is running the global catalog for. But as long as a physical server hosting global catalog services exists on the network that allows the Hyper-V host to authenticate to it is running on the network having a second global catalog server within the host as a virtual guest works fine. Domain controller As with the global catalog server as long as there is a domain controller or global catalog server outside of the virtual host system having a domain controller as a virtual guest session