Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide

Architecture 2-7
Compaq Confidential – Need to Know Required
Writer: John Blackburn Project: Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide
Comments:
Part Number: 225083-002 File Name: c-ch2 Cluster Architecture.doc Last Saved On: 6/11/01 11:20 AM
FC-AL Switch
One FC-AL Switch can also be installed between cluster nodes and shared
storage arrays in a PDC/O1000 cluster to create a non-redundant Fibre
Channel Arbitrated Loop (FC-AL).
The FC-AL Switch is another device for connecting one Fibre Host Adapter in
each node with the array controller in the RA4000/RA4100 Array. The Fibre
Host Adapter in each node, the FC-AL Switch, and the RA4000/RA41000
Arrays to which they are connected belong to the same non-redundant FC-AL.
The FC-AL Switch 8 supports eight ports. With the addition of the 3-port
Expansion Module (PEM), the switch supports 11 ports.
For further information, refer to the Compaq StorageWorks Fibre Channel
Arbitrated Loop Switch (FC-AL Switch) User Guide.
Fibre Host Adapters
Fibre Host Adapters are the interface between the cluster nodes (servers) and
the RA4000/RA4100 Arrays to which they are connected. As Figure 2-1
shows, a Fibre Channel cable runs from one Fibre Host Adapter in each cluster
node to a port on the Fibre Channel SAN Switch, FC-AL Switch, or
Storage Hub.
Storage Hub/Switch
Switch
(Cluster Interconnect)
Client LAN
Node 1
Node 2
RA4000/4100
Array
RA4000/4100
Array
RA4000/4100
Array
Fibre
Host Adapter
Fibre
Host Adapter
ProLiant
Server
ProLiant
Server
Figure 2-1. Fibre Host Adapters in a two-node PDC/O1000 cluster