IBM Netfinity ServeRAID-4H Ultra160, Справочник пользователя

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The following illustration is an example of a RAID level-10 logical drive.
Start with six physical drives.
Create three arrays (labeled
A, B, and C), each array
using two physical drives.
A A
B C
A
Then, create a spanned array
(labeled as 1) that spans the
three arrays.
A A
B
C
111
A
1
A sub-logical drive is created
within each array (A, B, and
C). Then, the data is striped
across the physical drives in
the array, creating blocks.
Notice that, in each array, the
data on the drive on the right
is a copy of the drive on the
left. This is because the
sub-logical drives (A, B, and
C) are RAID level-1 in a RAID
level-10 implementation (see
the following table).
A A
B
C
1
1
2
3
4
5
7
6
8
1
2
3
4
5
7
6
8
1
2
3
4
5
7
6
8
1
2
3
4
5
7
6
8
1
2
3
4
5
7
6
8
1
2
3
4
5
7
6
8
11
A
1
Then, create a logical drive
within the spanned array (1).
The data is striped across this
logical drive, creating blocks.
Notice that none of these
blocks are redundant. This is
because the logical drive (1)
is RAID level-0 in a RAID
level-x0 implementation (see
the following table).
A A
B
C
1
1
2
3
4
5
7
6
8
1
2
3
4
5
7
6
8
1
2
3
4
5
7
6
8
1
2
3
4
5
7
6
8
1
2
3
4
5
7
6
8
1
2
3
4
5
7
6
8
11
A
1
1
2 3
5 4
7
10
8
11
6
9
12
Chapter 1. Getting started
9