HP P6000 Continuous Access Implementation Guide (T3680-96431, August 2012)

Dual physical fabric with six zones
Figure 28 (page 68) shows a dual physical fabric with six zones used between eight–port controller
pairs. Four zones are dedicated to host I/O and two zones are dedicated to replication.
Figure 29 (page 69) shows the connections used when one four-port controller pair is used.
NOTE:
• In a dual physical fabric with a six-zone configuration, each HP P6000 Continuous Access
relationship must include at least one EVA8x00 or one EVA6400.
• When using a dual physical with a six-zone configuration with fabric zoning, ISLs cannot be
included in the zones. See Figure 28 (page 68). Replication can be load balanced across
ISLs due to the preferred port algorithm and by preferring DR groups to both controllers on
the array. Controller software releases prior to XCS 6.xxx do not implement the preferred port
algorithm for tunnel creation and cannot guarantee proper I/O load balancing regardless of
which controller DR groups are preferred to. Not properly load balancing DR groups across
controllers may result in one of the ISLs being overloaded, negatively impacting replication
performance.
Creating fabrics and zones 67