HCX Performance outcomes for underlying network speed over 2Gbps
Article ID: 416441
Updated On:
Products
Issue/Introduction
The Interconnect service (HCX-IX) appliance provides replication and vMotion-based migration capabilities over the Internet and private lines to the destination site while providing strong encryption, traffic engineering, and virtual machine mobility.
The transfer speed of migrations performed by the HCX-IX appliance varies depending on the underlying network speed. Increase resources to the IX appliance (such as adding more CPU/Memory) will not necessary improve the transfer speed.
The maximum underlay bandwidth supported by a single HCX-IX migration appliance is 2Gbps. At maximum concurrency (when not limited by other environmental factors) bandwidth beyond 2 Gbps cannot be utilized by a single IX appliance. For all maximum performance limitation, please check VMware Configuration Maximums.
Environment
VMware HCX
Resolution
An appliance scale out approach can be used to increase concurrency and total utilization of the high bandwidth network underlays. HCX has a 200 migration concurrency maximum. Any portion of this limit can be distributed using parallel IX appliances. This assumes that the IX VMs are distributed to different ESX hosts, and the storage itself is capable of supporting a high transfer rate. HCX IX appliances can be increased by adding Service Meshes to an HCX installation. One IX is deployed per Service Mesh.
Additional Information
For other performance outcomes, please refer to: Network Underlay Characterization and HCX Performance Outcomes
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