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The purpose of this article is to provide an understanding of how VM Migration Software, such as VMware VMotion, works and answers to some of the common questions related to using those software with Appian.
Live migration refers to the process of moving a running virtual machine or application between different physical machines without disconnecting the client or application. Memory, storage, and network connectivity of the virtual machine are transferred from the original guest machine to the destination. One commonly used software for this is VMware VMotion.
Appian does not recommend running your Appian environment with any live VM migration software because their capability has been known to cause inconsistencies between Appian components. This can lead to site unavailability or service degradation. This recommendation is because the VM migration process can often create enough of a communications gap between Appian components that they detect a failure has occurred, which can cause internal service metadata to be lost and trigger failover mechanisms.
This article applies to Appian 17.3 and later.
Last Reviewed: April 2019
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