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SoftNAS makes use of the vmxnet 3 network driver to support 10 GbE virtual NICs, support which is provided by drivers that come with VMware Tools. These drivers are compatible across all ESXI 5.x versions.
To update VMware Tools on Linux, follow VMware's instructions here. Log in as root (use the default password "Pass4W0rd" if the administrator has not yet changed the root password). To log in, open up a console window on VMware and press F8 in the SoftNAS Console, log in with the root password, then log into the SoftNAS Desktop and launch a command shell, then follow the VMware Tools installation and update instructions.
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