User Guide
84
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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
and 1. The Internal RAID Controller supports RAID levels 0, 1, 5, and 6. The number
of hard disk drives required to create a disk group varies depending on the RAID level
as shown in the table below.
Caution
To use RAID 5 or RAID 6 with the Internal RAID Controller, you
need to install the optional RAID Upgrade Kit.
Note:For details of the RAID levels, see "RAID Levels"
described 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.
Table 22: RAID levels
RAID level Number of required HDDs
Min. Max.
RAID 0 1 8
RAID 1 2 2
RAID 5 3 8
RAID 6 3 8
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