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Maximum Distances Between Cluster Nodes and Shared Storage Subsystem Components in a NonRedundant FCAL, I/O Data Paths for a Non-Redundant FC-AL

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2-20 Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide Maximum Distances Between Cluster Nodes and Shared Storage Subsystem Components in a Non-Redundant FC-AL By using standard short-wave Fibre Channel cables and GBIC-SW modules, an RA4000/RA4100 Array can be placed up to 500 meters from the Storage Hub or FC-AL Switch, and the Storage Hub or FC-AL Switch can be placed up to 500 meters from the Fibre Host Adapter in each cluster node. See Figure 2-9. 500 m RA4000/4100 Array 500 m 500 m Node 3 Node 1 500 m 500 m Node 2 Node 4 Storage Hub/FC-AL Switch Figure 2-9. Maximum distances between cluster nodes and shared storage components in a non-redundant FC-AL I/O Data Paths for a Non-Redundant FC-AL The shared storage components in a non-redundant FC-AL use two distinct I/O data paths, separated by the Storage Hub or FC-AL Switch: I One path runs from the Fibre Host Adapter in each node to the Storage Hub or FC-AL Switch. I Another path runs from the Storage Hub or FC-AL Switch to the RA4000 Array Controller in each RA4000/RA4100 Array of that non-redundant FC-AL.

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2-20
Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide
Maximum Distances Between Cluster Nodes and
Shared Storage Subsystem Components in a
Non-Redundant FC-AL
By using standard short-wave Fibre Channel cables and GBIC-SW modules,
an RA4000/RA4100 Array can be placed up to 500 meters from the Storage
Hub or FC-AL Switch, and the Storage Hub or FC-AL Switch can be placed
up to 500 meters from the Fibre Host Adapter in each cluster node. See
Figure 2-9.
500 m
500 m
500 m
500 m
500 m
Storage Hub/FC-AL Switch
RA4000/4100 Array
Node 1
Node 3
Node 2
Node 4
Figure 2-9.
Maximum distances between cluster nodes and shared
storage components in a non-redundant FC-AL
I/O Data Paths for a Non-Redundant FC-AL
The shared storage components in a non-redundant FC-AL use two distinct
I/O data paths, separated by the Storage Hub or FC-AL Switch:
■
One path runs from the Fibre Host Adapter in each node to the Storage
Hub or FC-AL Switch.
■
Another path runs from the Storage Hub or FC-AL Switch to the
RA4000 Array Controller in each RA4000/RA4100 Array of that
non-redundant FC-AL.