Raid Levels; Disk Group - NEC N8100-1410F User Manual

RAID Levels

The record mode enabling the RAID feature includes several levels. Among the levels, the Internal
RAID Controller (equivalent to N8103-116) supports the following levels; RAID 0, RAID 1, RAID
5, and RAID 6. The number of HDDs 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
IMPORTANT:
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 Internal
RAID Controller (equivalent to N8103-116), creating one disk group (DG).
HDD 1
(36 GB)
Number of required HDDs
Min.
1
2
3
3
To use RAID 5 or RAID 6, you need to additionally
For details of the RAID levels, see "RAID Levels" described
RAID Controller
HDD 2
(36 GB)
Configuring Your Server 4-23
Max.
8
2
8
8
Disk Group 0: 108 GB
HDD 3
(36 GB)