Storage Hub; Kgpsa-Bc And Kgpsa-Cb Host Adapter - Compaq 112726-001 - ProLiant - 6500 Administrator's Manual

2-6 Compaq Parallel Database Cluster Model PDC/O5000 for Oracle8i and Windows 2000 Administrator Guide

Storage Hub

KGPSA-BC and KGPSA-CB Host Adapter

For further information, refer to these manuals provided with each Fibre
Channel SAN Switch:
I
Compaq StorageWorks Fibre Channel SAN Switch 8 Installation and
Hardware Guide
I
Compaq StorageWorks Fibre Channel SAN Switch 16 Installation and
Hardware Guide
I
Compaq StorageWorks Fibre Channel SAN Switch Management Guide
provided with the Fibre Channel SAN Switch
Storage Hubs are installed between cluster nodes and shared storage
subsystems in clusters to create redundant Fibre Channel Arbitrated Loops.
Storage Hubs connect the host adapters in cluster nodes with the HSG80 Array
Controllers in MA8000/EMA12000 Storage Subsystems. From two to four
Storage Hubs are used in each redundant FC-AL of a PDC/O5000. Using two
or more Storage Hubs provides fault tolerance and supports the redundant
architecture implemented by the PDC/O5000.
You can use either the Storage Hub 7 (with 7 ports) or the Storage Hub 12
(with 12 ports). Using the Storage Hub 7 may limit the size of the
PDC/O5000. For more detailed information, refer to Chapter 4, "Cluster
Planning," in this guide.
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.
Each redundant Fibre Channel Fabric or redundant FC-AL contains a
dedicated set of KGPSA-BC or KGPSA-CB Host Adapters in every cluster
node. Each host adapter in a node should be connected to a different Fibre
Channel SAN Switch or Storage Hub.
If the cluster contains multiple redundant Fibre Channel Fabrics or multiple
redundant FC-ALs, then host adapters cannot be shared between them. Each
redundant Fibre Channel Fabric or redundant FC-AL must have its own set of
host adapters installed in each cluster node.