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RAID 10

Posted on 2011-03-15
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I am installing a new server on a client site and I have decided to go with RAID 10. I have never configured RAID 10 before, so I am looking for advice on this.

I understand how RAID 10 works technically, but does it appear to the system as just 1 drive or can I configure RAID 10 for two seperate drives, one for the system and then one for the data?


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Question by:JBond2010
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by:sentner
ID: 35138701
It depends on the RAID controller you're using.  Some controllers (such as Intel Matrix RAID) will allow you to present sliced-up mini-RAID configurations as separate drives to the OS.

However, doing so adds an extra layer of complication that doesn't actually gain you anything.   A better solution is to have your OS disk simply mirrored (there's really no need to stripe it), and then have your data disks be the remainder.  

For example, in my home desktop PC, I have a pair of SSDs mirrored (RAID 1) as my OS disk, and then 4 large SATA2 drives in RAID 1+0 as the data drives.
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by:JBond2010
ID: 35138752
What I want to be able to do is seperate the data from the system using RAID 10.
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by:sentner
ID: 35138986
How many physical disks do you have in your array?
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by:JBond2010
ID: 35139174
I am going to use 4 disks, 160 GB each.
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by:JBond2010
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If I configure the RAID 10 with 4 disks will it show up as 1 drive?
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by:sentner
ID: 35139280
Ok, then you can't break it up into multiple groups to see it as multiple drives.  However, with Intel Matrix Storage, you can kinda do the same thing (but it may introduce some additional data loss risk and possibly affect performance a bit).  

What RAID controller do you have in this system?
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by:JBond2010
ID: 35139306
It's a Serial ATA-300 integrated.
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sentner earned 500 total points
ID: 35139490
Well, that doesn't really help much, as there are different manufacturers if integrated SATA RAID controllers.  If you go into the configuration for the RAID controller (where you'll set up the RAID types, etc) you should be able to find out what the manufacturer is.

Most though, will not permit you to break up the RAID set further, so you'll only be able to see a single drive in the OS, and can then create 2 partitions on that disk (one for data, one for OS), which will give you the OS/data separation.
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