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9
Configuring Tape Device Extension
9-5
Network Configuration Examples
Note: McDATA prefers World Wide Name (WWN) zoning
over port zoning. It allows the zoning to continue working
when cables are moved from port to port during switch
troubleshooting. Also, when using interop mode, it is the
only allowable zoning method.
Required Static
Edge LUN Mapping
The Automatic DataPath Mapping function of the Edge will
automatically discover and map host LUNs on a first learned basis. It
will fill the host LUN map from the lowest to the highest order. Static
Edge LUN mapping should be used when a specific order is desired
in the host LUN table.
When using static LUN mapping to configure a remote target LUN,
the automatic LUN discovery function is disabled for that target. This
allows a method for “zoning” remote LUNs available through this
pair of Edges.
A configurable number of LUNs (default is 8) will be attempted to be
discovered for each discovered remote target. This is configured in
the Discover LUN Count field on page
-35 and page -40. If the
remote target LUN is out of this range, this LUN will need to be
statically mapped.
Table 9-2 Fibre Channel Switch Zoning Definitions for Figure 8-3
Fibre Channel
Switch
Zone Device
FC Switch 1
Zone 1 Server A, Edge 10
Zone 2 Server C, Edge 10
Zone 3 Server C, Tape C1, Tape C2, Tape C3, Media Changer 1
Zone 4 Edge 10, Tape B2, Media Changer 1
FC Switch 2
Zone 1 Server B, Edge 20
Zone 2 Server B, Tape B1, Media Changer 2
Zone 3 Edge 20, Tape A1, Tape A2, Tape C4, Media Changer 2