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

• 6–fabric architecture: provides the highest availability level
By using the B-Series directors and standalone switches capabilities, and the combination of Fibre
Channel routing, switching, and SAN extension, the physical configuration can be reduced to fewer
elements to drive additional simplification and ease of maintenance.
Continuous Access EVA configurations
The 400 MP Rout
er and MP Router blade support the HP standard Continuous Access EVA replication
configurations. This includes the two-fabric, four-fabric, five-fabric, six-fabric and six-fabric with d edicated
backbone fabric implementations as shown in Figure 7, Figure 8, Figure 9, Figure 1 0,andFigure 11.
These five configuration examples are all drawn showing 400 MP Routers; however, they c ould all be
implemented using the MP Router blade or a combination of both.
Figure 7 shows a typical 2-port EVA 6000/5000/4000/3000 configuration of a Continuous Access
two-fabric LSAN replication zone solution. In this configuration, zoning is used to separate host traffic
from replication traffic in the fabric. Standard B-Series zoning is used for one port from e ach EVA
controller for local host access as in any other fabric. The other EVA por t on each controller is dedicated
to replication traffic, a nd LSA N zoning is used to enable the Fibre Channel Routing feature of the MP
Router to allow these devices to communicate across the FCIP Link as if they were in the same fabric.
This is th
elowestcostconfiguration. However, no path redundancy is provided, and therefore this
configur
ation does not provide any redundancy in the event of a fabric or WAN failure. In addition, the
IP netwo
rk is part of the remote site fabric, and the local site fabric is the backbone fabric.
Figure 7 Contin uous Access EVA t wo-fabric FCIP-router configuration
Figure 8 shows a typical 4-port EVA 8000 config uration of a Continuous Access four-fabric LSAN
replication zone solution. Like the previous configuration, zoning is used to separate host trafficfrom
replication traffic i n each fabric. In each fabric, standard B-Series zoning is used for two ports from each
EVA controller for local host access as in any other fabric. The other EVA ports on each controller
are dedicated to replication traffic, and LSAN zoning is used to enable the Fibre Channel Routing
feature of the MP Router to allow these devices to communicate across the FCIP Link as if they were in
the same fabric.
This configuration is a better solution than the Continuous Access two-fabric LSAN replication zone
solution because there is “No Single Point of Failure” (NSOF) as both the local and remote sites implement
dual redundant fabrics and a separate FCIP link for each fabric pair. Still, the IP networks are part of the
remotesitefabricsandthebackbonefabricsaretheonesonthelocalsite.
B-Series remote replication solution
23