The one thing about disk-based shooting is that it starts to follow an IT model rather than a media model. Which is new for us media-only types, and sometimes just plain too much work. I can't really afford all the infrastructure for a three tier storage system and the time to manage it properly. I'm a one-man show.
I need something that approximates videotape or film; shoot, bring it online for editing, put it in the vault. Forget it.
My experience has been corporate/educational/documentary with some drama. The drama usually gets archived forever, almost never being brought back online after completion.
But the other stuff gets reused for years, sometimes decades. And you need to bring it online relatively quickly. I've had some experience with DLT backup in the past, and it was always faster to redigitize from the camera tapes. And if you weren't sure which videotape something was on, DLT would have taken silly amounts of time compared to scanning videotapes.
So I kind of wince at an IT Solution which involves thousands of dollars of investment in the kind of technology that normally goes obsolete in a very few years, takes many hours of management on every show, and is rather difficult to bring back online. And if I put "data management" as a line item on an invoice, my clients won't complain, they'll go elsewhere.
It has to be stupid easy. Putting a show on firewire drives fits that model. I'm not dissing data tape as a reliable, cheap long-term storage medium. Go ahead and use it. But it won't work for me.