User's Guide

1. Installing Internal Optional Devices
Express5800/R120f-2M User’s Guide
102
Chapter 2 Preparations
1.20.2
Notes on Building RAID System
Note the following points when building a RAID System.
• The number of hard disk drives required varies in each RAID level.
• If the optional RAID Controller N8103-176 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
N8103-176 N8103-177/178
RAID 0
1
1
RAID 1
2
2
RAID 5
3
RAID 6 3
RAID 10 4 4
RAID 50 6
RAID 60 6
• In the RAID System, all the hard disk drives in a group (pack) must have the same capacity, interface
type, and rotational speed.
• If you intend to install the OS to the RAID System, the process from RAID configuration to OS installation
can be easily completed by using EXPRESSBUILDER.
• If you wish to install the OS manually, use RAID System Off-line Utility (Ctrl-R or HII). For details, see
Chapter 2 (4. RAID System Configuration) in "Maintenance Guide" or the manual supplied with the
optional RAID Controller (N8103-176/177/178).
Important
• Do not change the mode to hibernate while building a RAID System.
• Build a Disk Array in the RAID System using hard disk drives that have the
same specifications (capacity, rotational speed, and standard).