Introduction, Disk Mirroring RAID, Disk Striping RAID

HP dx5150 RAID Installation and Setup Guide

Introduction

RAID (Redundant Array of Independent Disks) technology manages multiple disk drives to enhance I/O performance and to provide redundancy in order to withstand the failure of any individual member without loss of data.

SATARAID™ provides two RAID Set types: Striped Set (RAID 0) and Mirrored Set (RAID 1).

Disk Mirroring (RAID 1)

Disk mirroring creates an identical twin for a selected disk by writing the data simultaneously to two disks. This redundancy provides protection from a single disk failure. If a read failure occurs on one drive, the system then reads the data from the other drive.

Disk Striping (RAID 0)

Striping is a performance-oriented, non-redundant data mapping technique. It does not provide fault tolerance. With modern SATA and ATA bus mastering technology, multiple I/O operations can be performed in parallel, enhancing performance. Striping arrays use multiple disks to form a larger virtual disk.

Installation and Setup Guide