Raid System Configuration; Raid - NEC N8100-1417F User Manual

4-22 Configuring Your Server

RAID SYSTEM CONFIGURATION

This section describes how to use the internal hard disk drives as RAID System by Internal RAID
Controller (equivalent to N8103-116).
About the optional RAID Controller, refer to the documents provided with optional RAID
Controller.

RAID

Overview of RAID System
What is RAID (Redundant Array of Inexpensive Disks)?
RAID is an abbreviation for "Redundant Array of Inexpensive Disks". The RAID technology allows
more than one hard disk drive (HDD) to be handled collectively.
In actual, RAID can configure more than one HDDs as a single array (disk group) to operate the
HDDs effectively. This can bring higher performance than a single HDD of a large capacity.
The Internal RAID Controller (equivalent to N8103-116) has a feature to divide a single disk group
into several logical drives. The Internal RAID Controller (equivalent to N8103-116) recognizes
these virtual disks as if it were a single HDD. The Internal RAID Controller (equivalent to N8103-
116) accesses to more than one HDD configuring a disk group in parallel.
Some RAID levels can recover data from remaining data and parity by using rebuild feature if an
error occurs in a single HDD. This can provide high reliability for the system.