In cases where availability requirements are high, proper configuration of VMware HA is essential. For a floating-assignment pool, an acceptable solution might be to have users log in to a different desktop if the desktop they are using becomes unavailable. For example, a stateless desktop image (floating-assignment) pool might have different recovery point objective (RPO) requirements than a stateful desktop image (dedicated-assignment) pool. Requirements for high availability can differ substantially based on the purpose of the desktop pool. But achieving a higher density of virtual machines per server means that more users are affected if a server fails. VSphere, through its efficiency and resource management, lets you achieve industry-leading levels of virtual machines per server. Determining Requirements for High Availability Networking requirements depend on the type of server, the number of network adapters, and the way in which VMotion is configured. OS disks and persistent disks can be stored on NFS or VMFS datastores.įor more information, see the chapter about creating desktop pools, in the Setting Up Virtual Desktops in Horizon 7 document. If you store View Composer replicas on a VMFS version earlier than VMFS5, a cluster can have at most eight hosts. If you have vSphere 5.5 Update 1 and later, and store pools on vSAN datastores, the vSphere clusters can contain up to 20 ESXi hosts. vSphere 6.0 and later, and store pools on Virtual Volumes datastores.vSphere 5.1 and later, with View Composer linked-clone pools, and store replica disks on NFS datastores or VMFS5 or later datastores.Under the following conditions, vSphere clusters can contain up to 32 ESXi hosts, or nodes: Horizon 7 sizing limits and recommendations, see the VMware Knowledge Base (KB) article
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