Can someone explain the physical architecture of RAID 10 in complete layman's terms? [duplicate]

I am a newbie in the world of storage and I am having a hard time digesting the physical architecture of some of the RAID levels. I am particularly interested in RAID 10, and 50. I asked the question specifically about RAID 10, because I feel if I understand that, I'll understand the other.

So, I get the definition of RAID 10 - "minimum 4 disks, a striped array whose segments are mirrored". If I've got 4 disks and Disks 1 and 2 are a mirrored pair, and Disks 3 and 4 are a mirrored pair - where does the data get striped?

Thanks.


In the following A, B, C, D area pieces of data.

RAID 0:

DISK1    DISK2
  A        B

RAID 1:

DISK 1   DISK2
  A        A

RAID 10:

DISK 1   DISK2   DISK3   DISK4
  A        A       B       B

RAID 5: (p is parity, recovery information)

DISK 1   DISK2   DISKn
  A        B       p

RIAD 50: (p and q are parity, it's two of the above side by side...)

DISK 1   DISK2   DISKn   DISK4   DISK5   DISKm
  A        B       p       C       D       q

The Wikipedia RAID article has much more information and pretty pictures.


http://en.wikipedia.org/wiki/File:RAID_10.png

you have 2 raid 1 that go together into a raid 0 - raid 10.

look at this article as well - describes also the benefits etc. about it.

http://www.linux-mag.com/id/7928?hq_e=el&hq_m=1151565&hq_l=4&hq_v=bf05dd41dc