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

2-8 Compaq Parallel Database Cluster Model PDC/O2000 for Oracle8i and Windows 2000 Administrator Guide
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: c-ch2 Cluster Architecture.doc Last Saved On: 6/13/01 10:21 AM
The PDC/O2000 allows the use of either the Storage Hub 7 (with 7 ports) or
the Storage Hub 12 (with 12 ports). Using the Storage Hub 7 limits the size of
the PDC/O2000 cluster. For example, a cluster with four cluster nodes and
four RA4000/RA4100 Arrays requires Storage Hubs with at least 8 ports
(Storage Hub 12s). In your selection of Storage Hubs, you should also
consider the likelihood of cluster growth.
Refer to the Compaq StorageWorks Fibre Channel Storage Hub 7 Installation
Guide and the Compaq StorageWorks Fibre Channel Storage Hub 12
Installation Guide for further information about the Storage Hubs.
Fibre Host Adapters
Each redundant Fibre Channel Fabric or redundant FC-AL in a PDC/O2000
contains a dedicated set of Fibre Host Adapters in every cluster node. Across
servers, Fibre Host Adapters in the same slot are connected to the same
Storage Hub, FC-AL Switch, or Fibre Channel Fabric SAN.
If the PDC/O2000 cluster contains multiple redundant Fibre Channel Fabrics
or redundant FC-ALs, each redundant Fibre Channel Fabric or redundant
FC-AL must have its own dedicated set of Fibre Host Adapters in each cluster
node.
Compaq Secure Path software is installed on each cluster node to ensure the
proper detection of failures on an active I/O path and successful failover to the
standby I/O path. For information about installing Secure Path, see “Installing
Secure Path Software for Windows 2000” in Chapter 5, “Installation and
Configuration.”
For more information about the Fibre Channel Host Adapter, refer to the
Compaq StorageWorks Fibre Channel Host Bus Adapter Installation Guide or
the Compaq StorageWorks 64-Bit/66-MHz Fibre Channel Host Adapter
Installation Guide.
Gigabit Interface Converter-Shortwave Modules
A Gigabit Interface Converter-Shortwave (GBIC-SW) module must be
installed at both ends of a Fibre Channel cable. A GBIC-SW module is
inserted in each Fibre Host Adapter, each active port on a Storage Hub,
FC-AL Switch, or Fibre Channel SAN Switch, and each RA4000 Array
Controller.
GBIC-SW modules provide 100 MB/second performance. Fibre Channel
cables connected to these modules can be up to 500 meters in length.