Jagger50 - I have 2 x 1 Terrabyte internal hard drives on my main machine - one is for video and the other for audio and misc items. I keep the masters on these internal drives.
For backups I have 2 x 1TB Western Digital Mybook external drives. These also enable me to watch or listen to anything on my TV because I can plug them into my TV's media player via the USB port.
I am running out of space now though so have just bought 2 more 1TB Western Digital external drives from [
www.microdirect.co.uk] which were a steal at 70 GBP each.
Please feel free to ask for any more info.