Hyper-V Server storage performance

In most cases, storage performance will primarily be a concern for the VHDX files. Most other operations are occasional and short-lived.

The simplest (and most common) recommendation is to always use fixed VHDX files on RAID-10 systems. If you can afford it, this will certainly result in the best performance. However, a better recommendation is to understand the sort of performance that your Hyper-V Server cluster will require and ensure that your storage can provide at least that amount. Chapter 2, Cluster Design and Planning, covered using the MAP tool to assess your existing environment. If you explore other areas, it can also help you plan to deploy other Microsoft applications. So, if your measured and projected workload will need no more than a few hundred IOPS, there is little sense in building an oversized system to deliver thousands.

Pass-through disks

A technology that was widely used in older Hyper-V Server versions, but is rapidly falling out...