1. Installing Internal Optional Devices
Express5800/T110f-S User’s Guide
58
Chapter 2 Preparations
1.9.1
Notes on setting up a RAID System
Note the following points when setting up a RAID system.
•
The number of hard disk drives required varies in each RAID level.
•
If an on-board RAID controller or optional RAID controller (N8103-128/149) is used, the RAID system
cannot be built in RAID5/RAID6.
The minimum number of hard disk drives required to set up a RAID system
RAID level
On-board RAID Controller or
N8103-171/149
N8103-171/151/167
RAID 0
1
1
RAID 1
2
2
RAID 5
3
RAID 6
3
RAID 10
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 an on-board 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. The utility can be run during POST which starts immediately after the
server is turned on. For details, see
Chapter 2 (4. 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.
