I have some used rackmount servers (Dell R610, HP DL180 G6, HP DL360 G5) that I intend to use for on demand video streaming in a colocation environment. I would like to have them all on the same OS to make managing them simple, to have one server (HP DL180) that has lots of storage and super fast seek / transfer that will support multiple edge servers which will cache the media locally and will also have rapid seek but with less storage requirements.
I had originally been using Ubuntu but from previous feedback was told that Ubuntu won't have the same level of support for the hardware RAID as CentOS and so have been trying to switch that over on the servers.
In previous experiences with managed dedicated hosting, they would have a custom server configuration of CentOS 5 or 6 with all the little bells and whistles like
nano (I know it is super easy to install, it is just an easy thing to say it isn't part of the CentOS minimal install compared with the default from a hosting company).
The software vendor for the media streaming recommends doing some kernel level optimizations, and I am curious if I should stay with CentOS 6 at this point, or go with CentOS 7? It seems version 7 is still pretty new and so not sure if I would get the same quality of support here on the forums, and since the servers aren't really that new, I imagine there aren't any hardware items that needs 7.
From a security standpoint, am I shooting myself in the foot to not start out with version 7?