I am looking at building a new system for saving HD Video and playback, live streaming. no editing as such. Need advise on RAID controller/Drives/MB/RAM/VIDEO, will use Windows 2008 server or W7. No real budget as such. Thanks in advance
They are affordable 2 Tb drives. You may wish to research NAS enclosures as part of a media file server. It may be possible to set up a raid 0 in an NAS that would have some redundancy for drive failure, but I have no experience with that.
For streaming video, your bottleneck is likely to be your wireless network so I would look at high speed routers and adapters to sink some money into.