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

2-46 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
Storage Hub/Switch-to-Array Controller Paths
Figure 2-19 highlights the I/O data paths that run between the Storage Hubs or
FC-AL Switches and the two single-port RA4000 Array Controllers in each
RA4000/RA4100 Array.
Fibre Host
Adapters (2)
RA4000/4100
Array #1
RA4000/4100
Array #2
FC-AL
Switch/Storage
Hub #1
Node 1 Node 2
FC-AL
Switch/Storage
Hub #2
Fibre Host
Adapters (2)
Figure 2-19. FC-AL Switch/Storage Hub-to-RA4000/RA4100 Array data paths
If any component along an active path fails, Secure Path detects the failure and
automatically transfers all I/O activity to the components on the defined
backup path.