1. Installing Internal Optional Devices
Express5800/T110h-S User’s Guide
44
Chapter 2 Preparations
Notes on setting up a RAID System
1.7.1
Note the following points when setting up a RAID system.
•
The number of hard disk drives required varies depending on the RAID level.
•
If SW RAID controller or an optional RAID controller (N8103-176/188) is used, the RAID system cannot be
built in RAID5/RAID6/RAID50/RAID60.
RAID level
The minimum number of hard disk drives required to set up a RAID system
SW RAID or
N8103-176
N8103-188 N8103-177/178
RAID 0
1
1
1
RAID 1
2
2
2
RAID 5
3
RAID 6
3
RAID 10
4
4
4
RAID 50
6
RAID 60
6
•
Use SAS/SATA hard disk drives or SSDs that have the same capacity and rotational speed.
•
RAID 10 using a hard disk drive of 2 TB or more cannot be supported if SW RAID controller is used.
•
When installing an OS in your RAID system, you can easily complete the setup process, including RAID
configuration and OS installation, by using EXPRESSBUILDER.
•
If you are installing the OS manually, use the RAID system configuration utility. For details of the utility,
see
Chapter 2 (5. RAID System Configuration)
in "
Maintenance Guide
" or the manual supplied with the
optional RAID controller.
Important
•
Do not change the RAID system mode to hibernate.
•
A mix of SAS and SATA drives cannot be used within the RAID system.