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

2-64 Compaq Parallel Database Cluster Model PDC/O2000 for Oracle8i and Windows 2000 Administrator Guide
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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
Summary of I/O Path Failure and Failover
Scenarios for Redundant FC-ALs
Table 2-7 identifies possible I/O path failure events in redundant FC-ALs for
active/standby configurations with one RA4000/RA4100 Array and the
failover response, if any, implemented by Secure Path for each failure.
Table 2-7
I/O Path Failure and Failover Scenarios in Redundant FC-ALs for Active/Standby
Configurations With One RA4000/RA4100 Array
Description of Failure Failover Response
The active array controller in the
RA4000/RA4100 Array fails.
Secure Path forces a complete failover to the standby I/O path
components, including the standby Fibre Host Adapter in each
node, the other Storage Hub or FC-AL Switch, the standby array
controller in the RA4000/RA4100 Array, and Fibre Channel cables.
The standby array controller in the
RA4000/RA4100 Array fails.
None
The Fibre Channel cable
connection between the active
array controller and its Storage
Hub or FC-AL Switch is broken.
Secure Path forces a complete failover to the standby I/O path
components, including the standby Fibre Host Adapter in each
node, the other Storage Hub or FC-AL Switch, the standby array
controller in the RA4000/RA4100 Array, and Fibre Channel cables.
The Fibre Channel cable
connection between the standby
array controller and its Storage
Hub or FC-AL Switch is broken.
None
The Storage Hub or FC-AL Switch
connected to the active array
controller fails.
Secure Path forces a complete failover to the standby I/O path
components, including the standby Fibre Host Adapter in each
node, the other Storage Hub or FC-AL Switch, the standby array
controller in the RA4000/RA4100 Array, and Fibre Channel cables.
The Storage Hub or FC-AL Switch
connected to the standby array
controller fails.
None
The Fibre Channel cable
connection between a Fibre Host
Adapter and the Storage Hub or
FC-AL Switch connected to the
active array controller is broken.
Secure Path forces a complete failover to the standby I/O path
components, including the standby Fibre Host Adapter in each
node, the other Storage Hub or FC-AL Switch, the standby array
controller in the RA4000/RA4100 Array, and Fibre Channel cables.
continued