[Tig] Minimum RAID bandwidth for 2K playback?

[Bob Kertesz]

>We use 3ware (9550/9650/9690) controllers with either SAS or SATA in Raid 0, 
>Raid 5, or Raid 1+0.  Arrays are usually 12 drives, but that is usually due 
>to capacity.  We have found that the 3ware controllers scale pretty linearly 
>(in both reads and writes) until about 10 or 11 drives.

Hi Jason,

Can you comment on some real-world data rates using the 3ware 9550 controller?

I'm running an AJA 2K card, and I am looking to move away from an Adaptec U320
SCSI controller with 8 15K Seagate drives. I'd like to move to SATA, but I'm
having a hard time finding real world info on what is required. 

I have a PCIX 133 slot available, and would like to know roughly what kind of
R/W speeds I can expect using a 3ware 9550 controller and 8 7200 rpm drives
such as the Seagate 7200.11 series in Raid 0 and Raid 1+0 modes. 

And can you recommend better 7200 rpm drives than the Seagate 7200.11 series? 

Thanks.

--Bob

Bob Kertesz
BlueScreen LLC
Hollywood, California
bob at bluescreen.com

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