Compaq Parallel Database Cluster Model PDC/O2000 for Oracle8i and Windows 2000 Administrator Guide

Cluster Planning 4-3

Compaq Confidential – Need to Know Required

Writer: John Blackburn Project: Compaq Parallel Database Cluster Model PDC/O2000 for Oracle8i and Windows 2000 Administrator Guide Comments:

Part Number: 225082-002 File Name: e-ch4 Cluster Planning.doc Last Saved On: 6/13/01 10:25 AM

Capacity Planning for Cluster Hardware

Capacity planning determines how much computer hardware is needed to

support the applications and data on your clustered servers. Given the size of

your database and the performance you expect, you must decide how many

servers and shared storage arrays the cluster needs.

Compaq ProLiant Servers

The number of servers you install in a PDC/O2000 cluster should take into

account the levels of availability and scalability your site requires. Start by

planning your cluster so that the failure of a single node will not adversely

impact cluster operations. For example, when running a two-node cluster, the

failure of one node leaves the one remaining node to service all clients. This

could result in an unacceptable level of performance.

Within each server, the appropriate number and speed of the CPUs and

memory size are all determined by several factors. These include the types of

database applications being used and the number of clients connecting to the

servers.

NOTE: Certain restrictions apply to the server models and server configurations that are

supported by the Compaq Parallel Database Cluster. For a current list of

PDC/O2000-certified servers and details on supported configurations, refer to the Compa

Parallel Database Cluster Model PDC/O2000 Certification Matrix for Windows 2000. This

document is available on the Compaq website at

www.compaq.com/solutions/enterprise/ha-pdc.html

Planning Shared Storage Components for

Redundant Fibre Channel Fabrics

Several key components make up the shared storage subsystem for the

PDC/O2000. Each redundant Fibre Channel Fabric in a PDC/O2000 uses these

hardware components:

■ Two or more Compaq StorageWorks 64-bit/66-MHz Fibre Channel

Host Adapters or Compaq StorageWorks Fibre Channel Host Bus

Adapter/Ps (Fibre Host Adapters) in each node

■ Two or more Compaq StorageWorks Fibre Channel SAN Switches

(Fibre Channel SAN Switches)