RAID 0 SLOWS DOWN VIDEO ENCODING PERFORMANCE

[muskyx1]

So I decided to experiment with Raid 0 on my i7 system to see if it had any impact on video encoding performance using 2 500Gb Green Caviar WD HDD's. Specifically, I encoded a 700Mb AVI to DVD. Unfortunately, it took almost 3 times longer over a single HDD setup.

Prior to this, I installed Vista Ultimate (non-Raid mode) on 5 different 500Gb HDD's and a Velociraptor and ran the same test above. Keep in mind that the video file and the software were always on the Main Drive.

Here's A summary:

WD 500Gb Green Caviar 16mb Cache = 13 mins
WD 500Gb Green Caviar 16mb Cache = 36 mins
WD 500Gb Green Caviar 16mb Cache = 13.5 mins
WD VelociRaptor 150Gb 16mb Cache = 12.5 mins
Seagate Barracuda 500Gb 16mb Cache = 39 mins
Seagate Barracuda 500Gb 32mb Cache = 37 mins
Raid0 WD 2 x 500Gb Green Caviar = 34 mins



So is this AAM related causing such dramatic variations?

When I get home tonight, I plan to run a program that's supposed to disable AAM.

 

[Knavish]

Shouldn't video transcoding be CPU limited, not disk limited?

 

[yh125d]

It has to read and write all that data on the disk.

I think you'd see the best performance by using two drive not in raid. Read the avi file off one, encode it in the cpu, and write the dvd file to the second drive