Modify the SMU VM resource and network settings

Virtual SMU Installation and Upgrade Guide for Hitachi NAS Platform

Part Number

Before you add extra managed servers or clusters to the virtual SMU, increase the memory and the CPU resource allocations to reserve sufficient resources for each VM.

The following example is for four managed servers.

  1. In Hyper-V Manager, under Virtual Machines, right-click the VM and select Turn Off.
  2. Right-click the VM again and select Settings.
  3. (Best practice*) In the left pane, under Hardware, select Memory.
    1. Change the Startup RAM to 4096 MB.
    2. Select Enable Dynamic Memory. This ensures that Hyper-V receives accurate information about the memory architecture of the host when the VM starts.
    3. Change the Minimum RAM to 4096 MB.
  4. Under Hardware, select Processor.
    1. Change the Number of Virtual Processors to 4.
    2. Click Apply, and then click OK.
  5. Under Settings Network Adaptor configure the adaptor to use a static MAC address. If not using System Center Virtual Machine Manager (SCVMM), assign a static MAC address outside all assigned dynamic ranges of all nodes in the cluster. If using SCVMM, assign a static MAC address from the appropriate pool.
  6. Right-click the VM and select Start.
  7. At the bottom of the Hyper-V Manager dialog box, click the Memory tab and check that all of your settings are correct.

*Best practice

Although resource reservations are not required, it is best to reserve a portion of the host's physical RAM to guarantee the responsiveness of the virtual SMU and its quorum device. Ultimately, if you over provision the host, do so responsibly so that the virtual SMU is not starved of resources.

The critical virtual SMU requirement is that the quorum device must respond to cluster heartbeats (over UDP) within five seconds to prevent the possibility of dependent and degraded HNAS clusters rebooting.