Plan capacity and cache based on the expected consumption. Consider the requirements for availability and endurance. Planning Capacity in Virtual SANYou can size the capacity of a Virtual SAN datastore to accommodate the virtual machines (VMs) files in the cluster and to handle failures and maintenance operations. Design Considerations for Flash Caching Devices in Virtual SANPlan the configuration of flash devices for Virtual SAN cache and all-flash capacity to provide high performance and required storage space, and to accommodate future growth. Design Considerations for Flash Capacity Devices in Virtual SANPlan the configuration of flash capacity devices for Virtual SAN all-flash configurations to provide high performance and required storage space, and to accommodate future growth. Design Considerations for Magnetic Disks in Virtual SANPlan the size and number of magnetic disks for capacity in hybrid configurations by following the requirements for storage space and performance. Design Considerations for Storage Controllers in Virtual SANInclude storage controllers on the hosts of a Virtual SAN cluster that best satisfy the requirements for performance and availability. Parent topic: Designing and Sizing a Virtual SAN Cluster