Hyper-V Memory Reserve Test

As Hyper-V can dynamically allocate memory to virtual machines on demand, the host needs to ensure that some memory is kept for itself. Without which, Hyper-V may allocate a lot of memory to the VMs, starving the host of adequate memory resources. As a result, the host may start performing poorly. To avoid this, administrators need to time and again check the amount of memory that the host has set aside for its use. This check can be easily performed using the Hyper-V Memory Reserve test. This test periodically reports the amount of memory that the host has reserved for itself, thus enabling administrators to periodically check whether the host has sufficient memory for its own operations.

Target of the test : A Hyper-V / Hyper-V VDI server

Agent executing the test : An internal agent

Output of the test : One set of results for the Hyper-V host being monitored

Configurable parameters for the test
  1. Test period - How often should the test be executed
  2. Host - The host for which the test is to be configured.
Measurements reported by the test:
Measurement Description Measurement Unit Interpretation

Host memory reserve

Indicates the amount of memory reserved for the host.


A high value is desired for this measure. If not, the host’s performance may suffer, which in time, will affect the VMs’ performance as well.