Kris wrote:...TV land requires much higher bandwith...
Not really, uncompressed SD PAL video is under 30MB/sec, almost the same as 48 channels of 192KHz, 24bit audio. Something which even my laptop's hard drive can handle without breaking a sweat, and desktop drives that can do twice that are not uncommon.
Kris wrote:but SCSI or Fibre Channel is the only stuff we would consider
Considering the backend of most cheap (which means pretty much everything bar EMC or IBM) Fibre Channel array's is SATA these days, all you're doing is moving the drives externally.
Also firewire's data storage protocol IS SCSI (same with Fibre Channel) so as long as it has a decent controller chip (eg the LaCie cases) you're fine.
Kris wrote:snd the amount of audio set ups that don't use RAID arrays. Redundancy is your friend.
Yes, but unless it's genuine hardware raid (ie not adaptec or similar) it can be more trouble then it's worth, and unless it's a really good you have the very real problem of controller failure being more likely.
The nice bit about non-destructive DAW's is that it's normally very hard to modify the underlying audio file, which means that all the editing and mixing work takes place on one small EDL file that you can back up every version of and will still only be a few MB.
Whilst a 10k or even 15k RPM drive is nice for a system drive, it really wouldn't help audio that much, as audio generally doesn't cause lots of seeks, rather you get a lot of long (by drive standards) reads and small seeks to nearby sectors.