Compaq ProLiant 6500 Compaq Parallel Database Cluster Model PDC/O2000 for Orac - Page 111

Capacity Planning for Cluster Hardware, Compaq ProLiant Servers

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Cluster Planning 4-3 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 Compaq 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: I 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 I Two or more Compaq StorageWorks Fibre Channel SAN Switches (Fibre Channel SAN Switches)

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Cluster Planning
4-3
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
Compaq
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)