The network plan must be developed first, becuase the chosen network topology will affect how HDM components are configured. It also affects the way in which VMs are migrated, since this is based on the VMs network security and isolation requirements once it migrates to the cloud.
HDM enables the following network configuration flexibility:
An ideal network configuration provides isolation between various types of network traffic to deliver maximum security, performance, and access control. HDM supports the following types of networks:
The various network selections and their usage by HDM components are illustrated below:
During deployment, HDM components are configured to meet network access requirements necessary data stores, networks, and other components. During the deployment process, users must categorize and map all of these discovered networks in vCenter.
Note: Ideally, each traffic type should use a different network. However, a user may have one or multiple types of traffic using the same network. This is deemed as a valid configuration and supported by HDM.
While HDM deployment has the flexibility to support network traffic separation as mentioned in the previous section, for test purposes HDM can also be deployed in test environments where there may not be separation between the various types of networks mentioned above. In this situation, the network configuration would be simplified as illustrated below:
In this case all “Source Networks” would map to the VM Network/Management Network during the deployment process as illustrated below:
HDM supports DHCP and static IPs for its components. This choice will need to be made at deployment time. If static IPs are chosen, the IP allocation range must also be provided. The minimum number of required IPs will vary, based on the number of nodes in the cluster and the chosen deployment mode.
Note: HDM does not support changing the IP address of any of its components (the appliance, as well as other component VMs). To change the IP of any HDM component, HDM will need to be redeployed.