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VMware vCenter Server
VMware vCenter Server is a software service that provides a central administration point for VMware ESXi servers, as well as other components of the vSphere suite. vCenter Server performs the actual creation and management of virtual desktops, based on instructions received from the Horizon Connection Server and the Horizon Composer Server.
This book includes some information that applies only to the Windows-based version of VMware vCenter, but rest assured that it possible to use the Linux-based vCenter Server Appliance ( vCSA) for your VMware Horizon deployment if needed, which is the only vCenter Server version provided with vSphere 6.5 and later. The vCSA supports up to 10,000 desktops, which is more than enough for most Horizon implementations and represents the maximum recommended number of active sessions per Horizon Pod (a Pod can support up to 20,000 desktops, but VMware recommends no more than half that number). The most significant difference you will encounter (aside from the fact that you will not need to create a separate database for vCenter) is that when you use the vCSA, you will be required to deploy a standalone Horizon Composer server. This will be demonstrated in Chapter 3, Implementing Horizon Composer.