title: File storage server
body: <p>I'm looking for cleaner way to horizontally scale my Java app with minimal impact in sources and infrastructure. Here is my problem: I'm currently saving resources in local file system, so i need to <strong>consistently</strong> share these files among all my new processing processing nodes.
  I know the existence of ehcache and terractora server array but localRestartable (persistence guaranteed) is only available on ehcache enterprise and i want to keep commercial licenses as away as possible.
  Other alternatives could be memcached, redis, mongodb (persistence in mind), even nfs, but i want the opinion of those who have experience using these services as storage services, also i need to clarify: Requirements prevent to use any on-line cloud storage service although i'm open to any alternative that could be installable on my data-center of course!.</p>