[Tig] Minimum RAID bandwidth for 2K playback?

[Bob Friesenhahn]

A rather bright engineer in another forum has posulated that the path 
to successful real-time 2K playback is to eliminate disk seeks 
entirely. However, I proposed that a few disk seeks are ok given that 
the data can just be read a little faster to make up the difference.

I am interesting in hearing what sort of storage hardware is in 
current use for real-time 2K playback and if the ultimate solution was 
to purchase a packaged solution from a proprietary/specialty vendor, 
or to apply sensible engineering and purchase competitive "IT" 
hardware sufficient (capacity and data rate) for the task.

What raw storage bandwidth capacity has been proven to be necessary to 
satisfy the minimum 292MB/second data rate necessary for real-time 2K 
playback?  What sort of RAID topology is used (RAID-0, RAID-5, RAID-6, 
RAID 1+0)?  How many disk drives and what technology (e.g. Ultra-320 
SCSI, SATA, SAS, FC) are they?

Thanks,

Bob
======================================
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/