Starting in vSphere Plugin version 5.2.0, logs from the plugin are phoned home by default but users are able to disable phone home. They are labeled external_rest.log and, similar to the REST logs, will only phone home to the FlashArray if there were any REST calls made.
From the VMware appliance, run the command below and follow the instructions at the prompt. This bundle should be visible to all:
puresupport bundle