![background image](http://html1.mh-extra.com/html/thecus/i8500/i8500_user-manual_1101392009.webp)
- 9 -
RAID 0+1
Mirroring of the member RAID 0 volumes. RAID 0+1 needs at
least four hard drives.
RAID 10
Striping over the member RAID 1 volumes. RAID 10 needs at
least four hard drives.
RAID 30
Striping over the member RAID 3 volumes. RAID 30 needs at
least six hard drives.
RAID 50
Striping over the member RAID 5 volumes. RAID 50 needs at
least six hard drives.
RAID 60
Striping over the member RAID 6 volumes. RAID 60 needs at
least eight hard drives.
JBOD
The abbreviation of
“J
ust a
B
unch
O
f
D
isks
”
. JBOD needs at
least one hard drive.
1.4 Volume relationship diagram
Figure 1.4.1
This is the volume structure of i8500 designed. It describes the relationship of
RAID components. One RG (RAID group) consists of a set of VDs (Virtual disk)
and owns one RAID level attribute. Each RG can be divided into several VDs.
The VDs in one RG share the same RAID level, but may have different volume
capacity. Each VD will be associated with one specific CV (Cache Volume) to
RG
PD 2
PD 3
DS
PD 1
VD 1
VD 2
Snap
VD
RAM
Global CV
Dedicated
CV
+
LUN 1
LUN 2
LUN 3
+
+
Summary of Contents for i8500
Page 1: ...1 Thecus i8500 iSCSI RAID SYSTEM User Manual...
Page 86: ...86 H M B Diagram...