Capacity Planning For Cluster Hardware; Compaq Proliant Servers - Compaq 112726-001 - ProLiant - 6500 Administrator's Manual

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/O1000 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/O1000-certified servers and details on supported configurations, refer to the
Compaq Parallel Database Cluster Model PDC/O1000 Certification Matrix for
Windows 2000. This document is available on the Compaq website at
www.compaq.com/solutions/enterprise/ha-pdc.html
Cluster Planning 4-3