HP StorageWorks B-Series Remote Replication Solution Best Practices Guide (5697-6731, June 2007)

NOTE:
LSAN zones in the backbone fabric with a 2 Gb MP Router are not supported.
EdgefabricviewofaMetaSAN
To the edge fabric, the MP Router’s EX_Port lo oks like any other FC switch i n the edge fabric. However,
theEX_Portblockstheedgefabricfromseeingtherealtopologyofthebackbonefabricoranyswitches
in any other edge fabrics. To the edge fabric, the backbone fabric appears to be one switch, regardless
of the number of switches in the backbone fabric or the number of IFLs between the edge fabric and
the backbone fabric.
In a ddition to this single logical switch that represents the backbone fabric, the backbone fabric will
present one other logical switch for each ‘remote’ edge fabric that has devices shared bet ween edge
fabrics. Regardless of the number of switches and shared devices in the remote edge fabric, the local
edgefabricwillonlyseethatentireremoteedgefabricasasinglelogicalFCswitch.
Figure 2 Meta SAN with four edge fabrics
Using the Meta SAN depicted in Figure 2 as an example, and assuming that LSAN zones are deployed,
allows sharing of devices between the three edge fabrics: edge fabric#1, edge fabrics #2, and edge
fabric #4. Edge fabric #1‘s logical view of the M eta SAN appears as in Figure 3.
Figure 3 Edge fabrics #1 logical view of Meta SAN
In Figure 3, edge fabric #1 sees the backbone fabric as a single FC switch regardless of the number
of MP Routers, FC Switches, IFLs, or shared devices there are in the backbone fabric. Likewise, each
“remote” edge fabric with devices routed to edge fabric #1 log ically appears to be a single FC switch
connected to the logical switch that represents the backbone fabric.
B-Series remote replication solution
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