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Onboard RAID question

post #1 of 8
Thread Starter 
Is it possible to have two separate RAID 1 arrays with an onboard sata RAID controller. For example, would the following setup be possible:?

disk 0 - 500gb OS drive
disk 1 - 1tb Data
disk 2 - mirror (raid 1) for disk 1
disk 3 - 1tb media
disk 4 - mirror (raid 1) for disk 4


If not, is there anyway of having all those disks but w/o doing two disks in Raid 0, and using raid 1 on those. I don't want all my data (one copy) spread over multiple disks?

Thanks in advance?
Edited by ddietz - 12/18/10 at 7:01am
Alpha v.2
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Alpha v.2
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post #2 of 8
I don't quite follow what you're asking for in the first part. However, yes some motherboards do support multiple raid volumes but it is not recommended as this eats up CPU usage. A standalone Raid Controller is more suited for this task.
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post #3 of 8
you should be able to do as you want (although your post is really confusing), or you could stick all 4 drives in a single RAID10 array.

You don't need to worry about eating cpu cycles when running RAID 0, 1 or 10 - there is basically no overhead anyway, even with multiple arrays.
post #4 of 8
Thread Starter 
Sorry for the confusion of my post, perhaps it was due to my type where I said I wanted RAID 10 on disk 4. I have changed that.

disk 0 - 500gb OS drive
disk 1 - 1tb Data
disk 2 - mirror (raid 1) for disk 1
disk 3 - 1tb media
disk 4 - mirror (raid 1) for disk 4

Essentially, I would like two separate data drives and I would like each drive to have its own mirror.

I am in the design process of building a desktop for my father-in-law. This will double as a video editing machine and as a backup "server" (LAN and WLAN) for two laptops, though backup for the laptops would be much less frequent. Data would transfered from the laptops to the server on command, but having the server mirrored would be nice. I would also schedule backup of each to an external but this would be a scheduled rcopy command or similar happening at night. External backup is not my question.

I want to keep the video editing drives and backup drives separate. My thought here was that since all video plus laptop data would be more than 1Tb, I need 2 drives for data and two for backup. We want to stick with 1tb drives. I am hesitant to use raid 0 as I think everything would be lost of one of the primary drives fail as data is split between drives. Correct?

Obviously I do not know much about Raid setups. I'd appreciate any help. Buying a separate raid card would be fine, but only if necessary. As for the mobo, it will likely be this or, similar, http://www.newegg.com/Product/Produc...82E16813131655.
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Alpha v.2
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post #5 of 8
Thread Starter 
In doing some reading, it seems Western Digital Green drives don't work all that well with raid, is that correct? If so, are the Samsung F3's a good solution and how quiet are they?
Alpha v.2
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Alpha v.2
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post #6 of 8
Samsung F3s will outperform the Greens, and from what I've read they don't suffer from WD's crippling-to-sell-more-RE-drives issue.

Intel's ICH10R will let you do whatever you like with Arrays on different drives etc... I would assume AMD's driver is also good like this, but I couldn't say.

Also the CPU overhead from RAID is negligible..

Also if you don't trust AMD or Intel you can use Microsoft's Software RAID solution (Disk Management) dynamic disks, and Mirroring.
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post #7 of 8
Thread Starter 

Thank you for the advice.

From what I am reading around various places, it seems that WD Green will work if you use their utility to overwrite the TLER issue. I've also nut found teh Samsung F3's at newegg, Amazon, or TDirect. These where recommended to me though, any thoughts?


Thanks again!
Alpha v.2
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Alpha v.2
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post #8 of 8
Thread Starter 
I'm going to bump this and also ask a couple more questions, we we are down to picking the final components for this build.

This is likely the mobo that will be used:
ASUS M4A89GTD PRO/USB3 AM3 AMD 890GX
http://www.newegg.com/Product/Produc...82E16813131631

As I mentioned before, this build will have 4TB, in 1tb disks, for data storage. I would like to have two separate backup systems: main data on 1x1tb drive and mirrored to a second 1TB. Shared and other media data on a 3rd 1Tb drive, which is mirrored to a final 1Tb drive.

I am fine with hardware Raid 1 for the mirror, or software (Windows Vista) mirroring providing the OS mirroring does not consume much CPU/Memory as this computer will be primarily used for video editing.

I'd love opinions on the best way to handle this. I may have mentioned before, and I may be mistaken in feeling this way, but if I understand correctly, combining two HDDs (Raid 0, making it appear as ~2Tb) and then using Raid 1 or OS mirroring on those, is dangerous as data may be written across drives, and a failure of either primary disk could trash everything. Is that correct?

Thanks again!

*Note: I realize this is not a true backup. All data will have a 3rd copy with manual (or scheduled tasks) backup to externals (eSata or USB).
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Alpha v.2
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