Notes On Setting Up A Raid System - NEC Express5800/T110g-S User Manual

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 (N8103-171/172) is used, the RAID system
cannot be built in RAID5/RAID6.
RAID level
RAID 0
RAID 1
RAID 5
RAID 6
RAID 10
RAID 50
RAID 60

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.
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The minimum number of hard disk drives required to set up a RAID system
On-board RAID Controller or
N8103-171/172
1
2
4
Important  Do not change the RAID system mode to hibernate.
 A mix of SAS and SATA drives cannot be used within the RAID system.
Express5800/T110g-S User's Guide
1. Installing Internal Optional Devices
N8103-173/174/168
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