Several considerations go into planning for shared storage of virtual machine desktops, planning for storage bandwidth requirements with regard to I/O storms, and planning network bandwidth needs.

Details about the storage and networking components used in a test setup at VMware are provided in these related topics.

For a View 5.2 test environment, View Composer replica virtual machines were placed on high-read-performance solid-state drives (SSD), which support tens of thousands of I/Os per second (IOPS). Linked clones were placed on traditional, lower-performance spinning media-backed datastores, which are less expensive and provide higher storage capacity. The example uses View Composer linked-clones, rather than instant clones, because the test was performed with View 5.2. The instant clone feature is introduced with Horizon 7.

In a View environment, logon storms are the main consideration when determining bandwidth requirements.

Certain virtual and physical networking components are required to accommodate a typical workload.

These test results describe a View 5.2 setup with 10,000-desktops, in which one vCenter Server 5.1 instance managed 5 pools of 2,000 virtual machine desktops each. Only one maintenance period was required for provisioning a new pool or for recomposing, refreshing, or rebalancing an existing pool of 2,000 virtual machines. A logon storm of 10,000 users was also tested.

For wide-area networks (WANs), you must consider bandwidth constraints and latency issues. The PCoIP and Blast Extreme display protocols provided by VMware adapt to varying latency and bandwidth conditions.