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Raid for video editing - please review

post #1 of 7
Thread Starter 
Planning a new build for a image and video editing system.

For those who are interested the spec is as below:
* Gigabyte GA-Z58X-UDH3-B3 Motherboard
* Intel i7-2600K CPU
* On board chipset and marvell raids. No plan to add additional raid cards.

Sata ports on board are:
Port 0 and 1 - 6Gbps - Intel Chipset
Ports 2 through 5 - 3Gbps - Intel Chipset. #5 routed to rear panel as e-sata.
Port 6 and 7 - 6 Gbps - Marvell

I'm planning the following raid setup. Some questions below the pic.



1. Please critique / correct / suggest improvements.
2. Would the dual processor on the WDC Black help with reducing load on CPU in this case or is that moot?
3. Generally, what's the difference between 7200K RPM vs 5400/59xx RPM in raids (0,1,5). Looking for synthetic measurements from which I will draw inferences for real world impact. Please point me to any such 7200 vs 5400 RPM comparo measurements if already posted elsewhere.
4. I asked #2 and #3 because I am debating between the WDC Black 1.5Tb drive vs a green 2Tb drive both of which are at the same price point.Feel free to share your recommendations of one over the other.

Thanks.
post #2 of 7
Thread Starter 
Btw,backup will be offline solutions. Neither of the raid arrays are intended to provided backup security.
post #3 of 7
1. I don't like mixing raid levels on disk. It is always a compromise. Also, I would just skip R5 altogether if you are doing backups and are going to be using the drives for anything IO intensive. A software controller just is teh suck for R5.
2. It's moot. It makes it handle its own queue faster
3. http://www.legitreviews.com/article/1077/1/
4. I would go with the blacks. I have both, and the only thing I would ever recommend the greens for after using them (plenty of Raid issues like jumpering to SATA1.5G etc) is for mass storage you don't need to use much if ever. And not ever for anything like video or other IO Intensive processing.
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post #4 of 7
Thread Starter 
Thanks Slavearm.

I also learnt elsewhere that I might run into issues with using WDC Black and Raid 5 together due to TLER being turned off in the desktop black drives (although I am not sure if the software raid 5 is also subject to that...)

So it is all going to be raid zero on the first array.

I already have 3x1TB7200 drives that I wanted to use in these arrays. I was debating whether to use these for the OS array and get the slower green drives for the data/write-to array or go with WDC blacks for the same price point as green albeit with a 25% lower capacity. So far, I am inclined towards the 3x1.5TB7200 blacks and using them for the OS+App+Source Data array and use my existing 2x1TB7200 for the data/write-to array; although I am still skeptical about the TLER limitation on the blacks potentially rendering them useless with hardware raid or raids other than 0 and 1.

Unfortunately Gigabyte routes 6th chipset SATA port over to rear panel, otherwise I could have done 3x1TB Raid 0 on the second data/write-to array as well.
post #5 of 7
+1 on blacks, greens have problems with their power saving features dropping them out of arrays. If you can afford it, spend the extra and get the black re4 drives. They are built for raid, blacks are however a good every day compromise

+1 on no raid 5 with out a real raid card.

I have to admit I get nervous about putting an OS on raid 0 with 3 mechanical drives, but as long as you're taking backups I guess you'll be ok.
     
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by stren View Post
I have to admit I get nervous about putting an OS on raid 0 with 3 mechanical drives, but as long as you're taking backups I guess you'll be ok.
Yes, I plan to image the OS and the Apps separately on offline media. As for the data (both source and edited), in addition to potentially being crossed over between the two arrays, it will be on 2 separate offline media as well.

I am still working out the offline backup aspect. I don't want to spend too much money all at once. I could either go with a couple of greens for the two offline backup copies or if it ends up costing too much, I could just trim down the first array from 3xdrives to 2x drives and use one of the 1.5Tb black and one of the existing 1TB 7200 drives as offline backup media. I have some time to work all that out though as I am not running out of space for backup at the moment!

Thank you both for your inputs!
post #7 of 7
@OP

I wouldn't mix RAID levels on the same disk either, and I certainly wouldn't do RAID 5 without either a) a hardware RAID controller or b) a decent software RAID implementation (which Windows doesn't currently have).

If I was building that kind of workstation using your hardware, my storage configuration would be:

1) 2x 500GB WD Blacks or Samsung F3s in RAID 1 for the OS & Apps, or RAID 0 if regular backups are in place.

2) 4x 1TB Samsung F3s/WD 1TB Caviar Blacks or 4x 2TB WD Caviar Blacks in RAID 10 for a scratch volume.


EDIT:

Just saw your SATA configuration. If possible find a motherboard that has more SATA ports internally, so that you can support more drives internally.
Edited by parityboy - 7/25/11 at 12:12pm
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