LSI MegaRAID SCSI 320-2 RAID Controller Series 518 - Manual (Page 95)

MegaRAID SCSI 320-2 Hardware Guide 7-1
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
Chapter 7
Installing and Configuring
Clusters
This chapter explains how clusters work and how to install and configure
them. It has the following sections:
•
Section 7.1, “Overview”
•
Section 7.2, “Benefits of Clusters”
•
Section 7.3, “Installation and Configuration”
•
Section 7.4, “Cluster Installation”
•
Section 7.5, “Installing SCSI Drives”
7.1 Overview
Physically, a cluster is a grouping of two independent servers that can
access the same shared data storage and provide services to a common
set of clients. With current technology, this usually means servers
connected to common I/O buses and a common network for client
access.
Logically, a cluster is a single management unit. Any server can provide
any available service to any authorized client. The servers must have
access to the same shared data and must share a common security
model. Again, with current technology, this generally means that the
servers in a cluster will have the same architecture and run the same
version of the same operating system.