Configuring Your Server 4-37
RAID Levels
The record mode enabling the RAID feature includes several levels. Among the levels, the on-board
RAID (MegaRAID ROMB) supports the following levels; RAID 0, RAID 1, RAID 5, RAID 6,
RAID10, and RAID 50. The number of HDDs required to create a disk group varies depending on
the RAID level as shown in the table below.
RAID level
Number of required HDDs
Min. Max.
RAID 0
1
8
RAID 1
2
2
RAID 5
3
8
RAID 6
3
8
RAID 10
4
8
RAID 50
6
8
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.
The figure below shows a sample configuration. The three HDDs are connected to the Onboard
RAID Controller (MegaRAID ROMB), creating one disk group (DG).
HDD 1
(36 GB)
HDD 2
(36 GB)
HDD 3
(36 GB)
RAID Controller
Disk Group 0: 108 GB
Содержание Express5800/140Rf-4
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