Compaq ProLiant 6500 Compaq Parallel Database Cluster Model PDC/O1000 for Orac - Page 36

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Architecture 2-13 Maximum Distances Between Cluster Nodes and Shared Storage Subsystem Components in a Non-Redundant Fibre Channel Fabric 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 Fibre Channel SAN Switch, and the Fibre Channel SAN Switch can be placed up to 500 meters from the Fibre Host Adapter in each cluster node. See Figure 2-4. 500 m RA4000/4100 Array 500 m 500 m Node 3 Node 1 500 m 500 m Node 2 Node 4 Fibre Channel SAN Switch Figure 2-4. Maximum distances between cluster nodes and shared storage components in a non-redundant Fibre Channel Fabric I/O Data Paths for a Non-Redundant Fibre Channel Fabric The shared storage components in a non-redundant Fibre Channel Fabric use two distinct I/O data paths, separated by the Fibre Channel SAN Switch: I One path runs from the Fibre Host Adapter in each node to the Fibre Channel SAN Switch. I Another path runs from the Fibre Channel SAN Switch to the RA4000 Array Controller in each RA4000/RA4100 Array of that Fibre Channel Fabric.

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Architecture
2-13
Maximum Distances Between Cluster Nodes and
Shared Storage Subsystem Components in a
Non-Redundant Fibre Channel Fabric
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 Fibre
Channel SAN Switch, and the Fibre Channel SAN Switch can be placed up to
500 meters from the Fibre Host Adapter in each cluster node. See Figure 2-4.
500 m
500 m
500 m
500 m
500 m
Fibre Channel
SAN Switch
RA4000/4100 Array
Node 1
Node 3
Node 2
Node 4
Figure 2-4.
Maximum distances between cluster nodes and shared
storage components in a non-redundant Fibre Channel Fabric
I/O Data Paths for a Non-Redundant Fibre Channel
Fabric
The shared storage components in a non-redundant Fibre Channel Fabric use
two distinct I/O data paths, separated by the Fibre Channel SAN Switch:
■
One path runs from the Fibre Host Adapter in each node to the Fibre
Channel SAN Switch.
■
Another path runs from the Fibre Channel SAN Switch to the RA4000
Array Controller in each RA4000/RA4100 Array of that Fibre Channel
Fabric.