Can My Cloud mirror be us as a web server?

Yes, it can very easily be used as a web server - but you don’t have to load it with Apache or anything. It comes pre-loaded with the lighttpd web server (which is very similar to Apache but has a smaller memory footprint and is a more nimbler web server). You do have to make a couple small changes first - see my post →   http://community.wd.com/t5/WD-My-Cloud-EX2/Share-your-files-with-friends-using-http-links/td-p/785417

Also, see my followup post about security implications if you do choose to use it as a web server…see →   http://community.wd.com/t5/WD-My-Cloud-EX2/Enabling-logging-for-lighttpd-web-server/td-p/788667

Finally, check out my post about how to install the website (CMS) app called Joomla that is included amongst the apps with the Mirror, if you want to simply setup a sophisticated website with minimal hassle →   http://community.wd.com/t5/WD-My-Cloud-EX2/Need-help-with-Joomla-install/td-p/774765

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