re: VMware's New Bid To Simplify Desktop Virtualization
The Storage Accelerator feature in View 5.1 can provide great read performance improvements, allowing them to operate at memory speeds for any VMs that are locked into memory. The I/O patterns in VDI environments, however, tend to be very write-intensive (outside of a few areas like boot storms). We typically see 70% write/30% reads for steady state usage in VDI environments, and I was at a VMUG presentation yesterday where VMware suggested a steady state write/read mix of 90/10.
I work for a company called Virsto that leverages a log architecture that speeds up all writes all the time for all VMs, using about 12GB of capacity on each host. This software product installs transparently into each ESX/ESXi host and makes the storage you already own generate 10x the IOPS. Virsto supports View and when used in conjunction with the Storage Acceleration feature in 5.1, provides comprehensive speed up across both reads and writes in VDI environments.