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4-24 Configuring Your Server
RAID Levels
The record mode enabling the RAID feature includes several levels. Among the levels, the Onboard
RAID Controller (LSI Embedded MegaRAID) supports RAID levels 0, 1, and 10. The Internal
RAID Controller (equivalent to N8103-116A) supports RAID levels 0, 1, 5, 6, 10, and 50. The
number of hard disk drives required to create a disk group varies depending on the RAID level as
shown in the table below.
RAID level
RAID 0
RAID 1
RAID 5
RAID 6
RAID 10
RAID 50
* To configure RAID6 using Express Setup, at least four hard disk drives of
same capacity must be installed.
IMPORTANT:
RAID Controller (equivalent to N8103-116A), you need to additionally
install the optional N8103-119 RAID Upgrade Kit.
NOTE:
later in this chapter.
Disk Group
A disk group is configured with more than one HDDs.
The allowable number of disk groups is equal to the number of HDDs.
The figure below shows a sample configuration. The three HDDs are connected to the Onboard
RAID Controller (LSI Embedded MegaRAID) or Internal RAID Controller (equivalent to N8103-
116A), creating one disk group (DG).
HDD 1
(36 GB)
Number of required HDDs
Min.
1
2
3
3*
4
6
To use RAID 5, RAID 6, or RAID 50 with Internal
For details of the RAID levels, see "RAID Levels" described
RAID Controller
HDD 2
(36 GB)
Max.
8
2
8
8
8
8
Disk Group 0: 108 GB
HDD 3
(36 GB)
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