D-Link DSN-656 User Manual - Page 18

RAID Levels, Volume Relationship, Just a Bunch Of Disks

Get D-Link DSN-656 PDF manuals and user guides View all D-Link DSN-656 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 18 highlights

D-Link Document - User Manual RAID Levels There are various RAID levels with different degrees of data protection, data availability, and performance. A description of supported RAID levels follow: Type RAID 0 RAID 1 N-way mirror RAID 3 RAID 5 RAID 6 RAID 0+1 RAID 10 RAID 30 RAID 50 RAID 60 JBOD Description Disk striping. Disk mirroring over two disks. Extension to RAID 1 level. It has N copies of the disk. Striping with parity on the dedicated disk. Striping with interspersed parity over the member disks. 2-dimensional parity protection over the member disks. Mirroring of the member RAID 0 volumes. Striping over the member RAID 1 volumes. Striping over the member RAID 3 volumes. Striping over the member RAID 5 volumes. Striping over the member RAID 6 volumes. The abbreviation of Just a Bunch Of Disks. Independently address a drive. Min. No. of Drives 1 2 N 3 3 4 4 4 6 6 8 1 Volume Relationship The following graphic is the volume structure which D-Link has designed. It describes the relationship of RAID components. LUN 1 VD 1 LUN 2 VD 2 LUN 3 VD + RG + + PD 1 PD 2 PD 3 DS Cache Volume RAM Copyright@2014 D-Link System, Inc. All Rights Reserved. 18

  • 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
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
D-Link Document – User Manual
RAID Levels
There are various RAID levels with different degrees of data protection, data availability, and
performance. A description of supported RAID levels follow:
Type
Description
Min. No. of Drives
RAID 0
Disk striping.
1
RAID 1
Disk mirroring over two disks.
2
N-way
mirror
Extension to RAID 1 level. It has N copies of the disk.
N
RAID 3
Striping with parity on the dedicated disk.
3
RAID 5
Striping with interspersed parity over the member
disks.
3
RAID 6
2-dimensional parity protection over the member
disks.
4
RAID 0+1
Mirroring of the member RAID 0 volumes.
4
RAID 10
Striping over the member RAID 1 volumes.
4
RAID 30
Striping over the member RAID 3 volumes.
6
RAID 50
Striping over the member RAID 5 volumes.
6
RAID 60
Striping over the member RAID 6 volumes.
8
JBOD
The abbreviation of
Just a Bunch Of Disks
.
Independently address a drive.
1
Volume Relationship
The following graphic is the volume structure which D-Link has designed. It describes the
relationship of RAID components.
RG
PD 2
PD 3
DS
PD 1
VD 1
VD 2
VD
RAM
Cache Volume
+
LUN 1
LUN 2
LUN 3
+
+
18
Copyright@2014 D-Link System, Inc. All Rights Reserved.