Re: INFORTREND Speed....

You're making it more complex than it needs to be, and using software RAID on a production volume, not only adds a point of failure, but makes it more difficult to reliably move the array to another machine.

Reformat the array as one RAID5 volume, with a hot spare if you can afford the loss of space. Without it if you can't. Use a 64Kb stripe size for mixed video, images, and graphics, or 128Kb stripe for pure video.

Connect it to your HBA with one fibre cable, and you should get over 300 MB/s read and write. A 16-bay Infortrend chassis gets about 375MB/s read/write when configured the same way. Also, your test results will vary dramatically depending on what frame size you use in AJA Stystem Test, so test for the format you'll actually be using if you want a realistic estimate of how the array will perform in actual use.

JM