Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide

1-2 Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i on Windows 2000 Administrator Guide

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Writer: John Blackburn Project: Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i on Windows 2000 Administrator Guide Comments:

Part Number: 225083-002 File Name: b-ch1 Clustering Overview.doc Last Saved On: 6/15/01 11:42 AM

Clusters Defined

A cluster is an integration of software and hardware products that enables a set

of loosely coupled servers and shared storage subsystem components to

present a single system image to clients and to operate as a single system. As a

cluster, the group of servers and shared storage subsystem components offers a

level of availability and scalability far exceeding that obtained if each cluster

node operated as a standalone server.

The PDC/O1000 uses Oracle8i Parallel Server, which is a parallel database

that can distribute its workload among the cluster nodes.

Figure 1-1 shows a PDC/O1000 cluster that contains:

■ Six cluster nodes (ProLiant

servers)

■ One Compaq StorageWorks

RAID Array 4000 (RA4000 Array) or

4100 (RA4100 Array)

■ One Compaq StorageWorks Fibre Channel Storage Hub (Storage Hub),

Compaq StorageWorks FC-AL Switch (FC-AL Switch), or

Compaq StorageWorks Fibre Channel SAN Switch

(Fibre Channel SAN Switch)

■ An Ethernet cluster interconnect

■ A client local area network (LAN)

Clients

Storage Hub/Switch

Switch

(Cluster Interconnect)

Client LAN

RA4000/4100 Array

Node 1Node 3Node 5

Node 2 Node 4 Node 6

Figure 1-1. Example of a six-node Compaq Parallel Database Cluster

Model PDC/

O1000