Deployment Guide

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15 Scaling VCF Domains Beyond a Single MX7000 Chassis | Document ID
6 Expand a VCF Cluster
Expanding a cluster beyond a single MX7000 chassis involves.
• Shut down any cluster hosts that will be relocated
• Expanding the MCM group
• Reconfiguring the network fabric
• Bring the hosts and VMs back up
Since the Management Domain cluster and Workload cluster are currently deployed to a single MX7000, you
can treat them the same way. The four Management Domain hosts are configured in a vSAN, contain NSX-T
Edge Nodes and are configured for vMotion. Since distributing these management hosts across more than
one chassis may be desirable in the future, the compute sleds were deployed using “Deploy To Devices”
method. When the hosts are moved to the second MX7000 chassis SmartFabric identifies the ports to which
the compute sled is connected and apply the appropriate network settings.
6.1 Shut Down Existing Virtual Infrastructure
Evacuate any VMs from hosts that will be redistributed from the first chassis to the new chassis(s). It may be
desirable to move two of the four management domain hosts from the first chassis to the second chassis. Any
VMs running on the hosts to be moved should be evacuated to the hosts that stay in the original chassis.
During the reconfiguration process network changes may cause errors to occur on any hosts still running. If
the management domain is not running any other workloads, it is recommended that you shut down the VCF
management stack and hosts. If you decide to shut down the management stack, ensure that you have the
shutdown order specific to the version of VCF deployed.
6.2 Expanding the MCM Group
Before an MCM group can be expanded the MX9002m management modules of the MX7000 chassis must
be properly cabled. Figure 1, above shows the cabling for a single chassis, two chassis and three chassis. A
maximum of 20 chassis can be configured in a single MCM group. The cabling of the MX9002m modules
must continue in the same fashion across all the (up to 20) chassis before they can be added to an MCM
group.
Adding a member chassis to the MCM group is done through the OpenManage Enterprise Modular interface.