HA is accomplished with dual ESXi hosts, with each running a single Deep North GPU VM. This is an active/active configuration. Each VM is inferencing the same video streams, and operations continue if one ESXi host or the VM goes down. Each VM is tied to an individual Deep North cloud database. The results from each VM can be viewed in the Deep North customer portal. If a single ESXi host or VM is compromised, users have access to the data from the other view within the portal. This is shown in the following figure. The on-premise video footage is also protected, as it is duplicated in a nonclustered vSphere deployment. In a clustered environment, which uses vSAN, the storage footprint is smaller with the same level of data protection as with duplicate copies. See VMware vSAN documentation for more information. The metadata that results from inferencing is also protected in the Deep North analytics cloud. See Inferencing process flow in the Architecture chapter of this document. The following figure shows the configuration of medium active/active configuration.
![Dual ESXi Deep North configuration](/static/media/9198938f-8c47-5a0e-82d9-6db6a62cd3f7/DAM-737a7bc8-71cd-44ba-9c4e-d28d62d7cb60/out/dual-esxi-config=GUID-27987BCD-283D-47B5-8C17-083516FAF6B9=1=en-us=Low.png)
In the figure above, the dual ESXi servers make up a medium configuration. Each ESXi host contains a single Deep North GPU VM. Both VMs process the same video footage and thus provide redundancy should one ESXi host or VM become compromised. In the following figures, the Deep North customer portal shows the inferencing results of both the primary and secondary VMs. Primary and secondary can be selected from a drop-down menu at the top of the portal (shown in a red box).
![Dell Edge Store1 Primary](/static/media/9198938f-8c47-5a0e-82d9-6db6a62cd3f7/DAM-737a7bc8-71cd-44ba-9c4e-d28d62d7cb60/out/store1-primary=GUID-BAB1ADB5-0F62-4B9A-964B-8845FDD54954=1=en-us=Low.png)
![Dell Edge Store1 Secondary](/static/media/9198938f-8c47-5a0e-82d9-6db6a62cd3f7/DAM-737a7bc8-71cd-44ba-9c4e-d28d62d7cb60/out/store1-secondary=GUID-390D8781-B773-4F19-8ED9-1F6803A1EAD9=1=en-us=Low.png)