Home > Storage > PowerStore > Virtualization and Cloud > VMware Horizon 8 with Dell EMC PowerEdge R6525 Servers and Dell EMC PowerStore 9000 > 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 the Horizon VM workload in this test is about 24k as shown in the test results.