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

2-44 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
Maximum Distances Between Nodes and Shared
Storage Components in a Redundant FC-AL
By using standard short-wave Fibre Channel cables with Gigabit Interface
Converter-Shortwave (GBIC-SW) modules, the following maximum distances
apply:
■ Each RA4000/RA4100 Array can be placed up to 500 meters from the
Storage Hubs or FC-AL Switches to which it is cabled.
■ Each Storage Hub or FC-AL Switch can be placed up to 500 meters
from the Fibre Host Adapters to which it is cabled.
Figure 2-17 illustrates these maximum cable distances for a redundant FC-AL.
Fibre Host
Adapters (2)
RA4000/4100 Array #1
RA4000/4100 Array #2
FC-AL
Switch/Storage
Hub #1
Node 1
500 meters
maximum
500 meters
maximum
Node 2
FC-AL
Switch/Storage
Hub #2
Fibre Host
Adapters (2)
Figure 2-17. Maximum distances between PDC/O2000 cluster nodes and
shared storage subsystem components in a redundant FC-AL