Hello,
I guess installing it on a Network Storage would work only if you have any sort of virtualization in place.
However, instead of this, you can consume a hosted PBX service available on our private telephony cloud, or install it on a standalone machine, coz as far as I am aware Asterisk gives lot of voice related issue when installed on virtualized environment.
Please open private message board for more clarification on the same,
Regards,
Mitul Limbani