We are looking to build a realtime playback machine using Linux and a RAID (5 or 10) setup. The current setup looks like:
- 12GB memory
- 5 x 7200rpm drive (software raid)
- centOS 6 (Kernel Linux 2.6.32-71.29.1.el6.x86_64)
- NVidia Quadro 5000 (driver 280.13)
- Intel(R) Xeon(R) CPU X5650 @ 2.67GHz
I did run Bonnie++ and iozone to do some benchmark with different raid setup (5 and 10), with different fs type (ext4 and xfs), and different stripe size. Unfortunately it seems that I can't get the speed I want out of it (always <200MB/s).
The other test I made was directly in the playback software (RV - http://www.tweaksoftware.com/products/rv), but could not get it to play faster than 20 frame per second (looking for 24 fps) with more than 3 sequences.
These playback details are a little futile, I just want to know what would be the best setup to get something like ~700MB/s read performance? Is it possible?
I've been reading quite a bit, seems like a hardware controller could be better. Also I guess 7200rpm is not enough. 10 or 15k might be better? What about SSD?
I've another constraint with this project, this machine will store all the sequences for all the projects, so density matter (I bet it will cost way more to get the same storage amount with SSD drives vs. std 10k rpm drive).
Any suggestions or tips will be appreciated to get the best read speed/storage amount.
Edit: Just stumble upon this http://www.fusionio.com/products/iodrive/. Anyone has experience with this card?