Gateway LX6200 8513217 - Gateway Hardware Reference Guide - Page 45

Understanding RAID 10

Page 45 highlights

www.gateway.com In the following graphic, each letter represents a unique block of data, and the number next to each letter represents which copy of the data files are stored on that drive. The "P" next to a letter represents parity (error-checking) information, and each column represents a separate hard drive. RAID 5 A1 A2 AP B1 BP B2 CP C1 C2 Understanding RAID 10 RAID 10 (also called RAID 1+0 or RAID 1&0) contains sets of RAID 1 mirrors acting as drives within a RAID 0 striping array. With this setup, the array could survive one drive failure in each mirrored array. In the following graphic, each letter represents a unique block of data, and each column represents a separate hard drive. RAID 0 RAID 1 RAID 1 A A C C E E B B D D F F Drawback A RAID 5 array is treated as one drive with the capacity of all but one of the drives added together. RAID 10 treats the entire array as a single drive with twice the storage capacity of the smallest drive. So if you have four drives (350 GB, 300 GB, 250 GB, and 200 GB) in a RAID 10 array, your computer recognizes a single drive with 400 GB total capacity. 39

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136

www.gateway.com
39
In the following graphic, each letter represents a unique block
of data, and the number next to each letter represents which
copy of the data files are stored on that drive. The ā€œPā€ next to
a letter represents
parity
(error-checking) information, and
each column represents a separate hard drive.
Understanding RAID 10
RAID 10 (also called
RAID 1+0
or
RAID 1&0
) contains sets of
RAID 1 mirrors acting as drives within a RAID 0 striping array.
With this setup, the array could survive one drive failure in each
mirrored array.
In the following graphic, each letter represents a unique block
of data, and each column represents a separate hard drive.
Drawback
A RAID 5 array is treated as one drive with the capacity of all
but one of the drives added together.
RAID 10 treats the entire array as a single drive with twice the
storage capacity of the smallest drive. So if you have four drives
(350 GB, 300 GB, 250 GB, and 200 GB) in a RAID 10 array, your
computer recognizes a single drive with 400 GB total capacity.
A1
B1
CP
A2
BP
C1
AP
B2
C2
RAID 5
A
C
E
A
C
E
B
D
F
B
D
F
RAID 0
RAID 1
RAID 1