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

2-42 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
Multiple Redundant Fibre Channel Arbitrated Loops
The PDC/O2000 supports the use of multiple redundant FC-ALs within the
same cluster. You would install additional redundant FC-ALs in a
PDC/O2000 to:
■ Increase the amount of shared storage space available to the cluster’s
nodes. Each redundant FC-AL can connect to a finite number of
RA4000/RA4100 Arrays. These RA4000/RA4100 Arrays are available
only to the Fibre Host Adapters connected to that redundant FC-AL.
■ Increase the cluster’s I/O performance.
Adding a second redundant FC-AL to the cluster involves duplicating the
hardware components used in the first redundant FC-AL.
The maximum number of redundant FC-ALs you can install in a PDC/O2000
cluster is restricted by the number of Fibre Host Adapters your Compaq
servers support. Refer to the Compaq server documentation for this
information.