
Hardware
333
RAID System Configuration
This section describes how to use the internal hard disk drives as a RAID System using the RAID
Controller (MegaRAID).
For more information about the optional RAID Controller, refer to the documents provided with
the optional Products.
RAID
Overview of the RAID System
What is RAID?
RAID is an abbreviation for "Redundant Array of Inexpensive Disks". The RAID technology
allows several hard disk drives (HDD) to be handled collectively.
RAID can configure several 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 RAID Controller (MegaRAID) has a feature to divide a single disk group into several logical
drives (virtual disks). Operating system recognizes these virtual disks as if it were a single hard
disk drive. Operating system accesses to more than one hard disk drive 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.
Summary of Contents for Express5800/A1080a
Page 87: ...87 Memo ...
Page 292: ...Hardware 292 3 BIOS Menu screen is displayed ...
Page 302: ...Hardware 302 Note 1 Enable is set only for slot 1 and slot 14 at factory shipment ...
Page 351: ...Hardware 351 3 BIOS will start Select Save Exit then press Enter ...
Page 442: ...Hardware 442 5 6 ...
Page 473: ...Hardware 473 Screen for changing keyboard layout in Java Console ...
Page 554: ...Hardware 554 Memo ...
Page 565: ...Software 565 Memo ...
Page 668: ...Operation and Maintenance 668 Memo ...
Page 696: ...XXVIII Memo ...