Hey, i'm new with the all thing here, i'm about to install the opnfv and have few questions before starting. 1. which version should I install (arno or Brahmaputra) and what are the difference? 2. which install tool should I pick? will they all provide the same outcome? 3. can I install the opnfv on A single server? 4. which OS should I install before starting the opnfv installation? centos? redhat? the all opnfv versions and installation tools support all os? (prefer RedHat) little confused maybe someone can pour some light here... Thanks,Itay.