Home > Storage > PowerStore > Virtualization and Cloud > PowerStore: 1,500 VMware Horizon VDI users > I/O size
The average I/O size of storage traffic in a VDI environment typically ranges from 18k to 32k. This size can vary if host-based caching is enabled or allowed. Some VM configurations do not allow host-based caching.
The average I/O size from Horizon VMs during the workload test was 20k at the array level.