Users Guide

Table Of Contents
Can I update CPU core configurations in Failover cluster?
No, updating CPU core configurations is not supported in Failover clusters. It is supported only on Azure Stack HCI clusters and
Windows Server based HCI clusters.
Can I update CPU core configurations in individual nodes?
Yes, you can update CPU core configurations in individual nodes. However, the node should not be part of an Azure Stack
HCI cluster or Windows Server based HCI cluster. Nodes part of Failover clusters are supported for individual CPU core
configuration update.
NOTE: Dell EMC highly recommends to keep hardware configuration same across all cluster nodes to achieve optimal
performance. If you update CPU core configuration in one node in a failover cluster, ensure to maintain the same
configurations across all nodes in the cluster.
Do I need a license installed to update the CPU core configuration?
Yes, "OMIWAC Premium License for MSFT HCI Solutions" must be installed on each cluster nodes to update CPU core
configurations. For individual nodes, OMIWAC Premium License must be installed for individual CPU core update. For more
information about licenses, see the licensing section in OMIMSWAC installation guide.
Cluster Expansion
Signature verification failed with the provided support matrix details
(optional) If internet connection is not available, perform the below steps to run HCI configuration profile checks in offline mode:
1. Download the asHCISolutionSupportMatrix.json and asHCISolutionSupportMatrix.json.sign files from http://
downloads.dell.com/omimswac/supportmatrix/.
2. Place these files in C:\Users\Dell\SymmetryCheck folder in the gateway system where Windows Admin Center is
installed.
3. Go to Windows Admin Center cluster connection home page, connect to the cluster and then launch to Dell EMC extension
again.
4. In the OpenManage Integration, go to the Configure tab and then click Expand Cluster on the left side.
Node update fails during node preparation for cluster expansion
During node preparation for cluster expansion, if node update fails due to SAS-RAID_Driver, ensure the followings configurations
are set:
Set the SATA controller to RAID mode.
Set the NVMe PCIe SSDs to RAID mode.
For more information about setting the RAID mode, see Appendix
Others
OpenManage Integration access denied
Cause: When you log in to Windows Admin Center (WAC) using gateway user credentials without admin privileges and try to
launch OpenManage Integration from the WAC console, access denied error may appear.
Resolution: Before you launch Dell EMC OpenManage Integration extension in Windows Admin Center, ensure to log in to WAC
as a gateway administrator.
54
Troubleshooting and Frequently asked questions