Originally posted by Paul Turpin Yeah - but wouldn't a fibre channel based RAID array with four to seven (or 14) drives be better than several non-RAID superfast SCSI drives. Simply using RAID 0 or better yet RAID 5 or even RAID 0+1 (if you had even more drives) - would boost performance.
Yes, a RAID with 4-7 drives, of any RAID type, on fibre channel would out perform a non RAID set of SCSI drives.
But, a fibre channel RAID is not neccesarily faster than a SCSI RAID.
Fibre Channel, like SCSI, is just a way to communicate data between two places. You can actually use Fibre Channel protocol on ethernet cable, or communicate SCSI over a Fibre Channel optical
The bandwith for modern fibre channel is 200MB/s. For Ultra320 SCSI it's 320MB/s. If you need bandwith above 200MB/s total then it's likely that you need a rather expensive storage solution involving an array with multiple HBAs (multiple outputs) and a switch to direct traffic on the storage network. If you want to have your storage centralized.
Originally posted by Paul Turpin
I'm not just looking into fastER times. I'm looking for cheaper amounts of Mass storage that is at least as fast but also has the ability to work with multiple networked systems and the possibility of data redundancy.
So you want data recorded at one workstation to be accessible at another workstation? How many workstations do you want to share data between? You really need data redundancy since you're a commercial studio. If I were you, I'd only consider a RAID 10(0+1) or 5.
If you can give up the hope of fast networked data storage, then you can do things very cheaply by using internal or external directly connected SCSI drives.
Originally posted by Paul Turpin ...and I'm still looking into using an apple Xserve RAID for audio. How does the new Apple system look to you faeflora?
The Xserve looks OK. But it will have more downtime than an enterprise class array. It doesn't have total dual pathing throughout, and it also uses IDE drives. IDE drives aren't tested for reliability nearly as much as SCSI drives are. The use of IDE drives drops the cost lots, but it also reduces possible performance greatly, and as mentioned before, you'll have to replace drives more often.
Would I use it for audio? Well having storage engineer knowledge I'd probably build my own enclosure, use scsi drives, with fibre channel over optical
cabling for about half the cost. If that wasn't an option, I might buy the Xserve. It does cost a premium of about $2000-$2500 over comparable devices, but what do you expect? It's Apple.
Hey, what do you use for backup right now?