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

• When adding array controllers to a zone, use the controller port World Wide Port Name
(WWPN), not the node WWN. For example, use the WWPN 5000-1FE1-001A-012A, not
the WWN 5000-1FE1-001A-0120.
• When creating a replication zone, include only arrays that have an HP P6000 Continuous
Access relationship with each other. Avoid including other arrays in the zone.
• Zoning allows you to enforce supported maximum visible connections. Create separate zones
for resources that exceed the following:
◦ Maximum number of arrays in the SAN
◦ Maximum number of HBAs per array controller (see Part III of the HP SAN Design
Reference Guide)
◦ Maximum number of switches in the SAN (see Part II of the HP SAN Design Reference
Guide)
• When setting up specific HP P6000 Continuous Access replication zones, HP recommends
that you exclude all servers from these zones.
Zoning management servers
Management servers must be in the same zones as the local and remote array host ports that are
used for the intersite links. Only one server at a time can be used to manage an array. However,
you should include one active management server and one standby management server in each
array management/intersite link zone.
Zoning best practices for traffic and fault isolation
This section describes how to use switch zoning to achieve two important benefits when using HP
P6000 Continuous Access: traffic isolation and fault isolation. Traffic isolation separates host I/O
traffic from HP P6000 Continuous Access replication traffic. This prevents excessive latency, caused
by insufficient ISL bandwidth or line quality issues, from negatively impacting host I/O performance.
Fault isolation is achieved through the use of multiple zones, which facilitates the quick isolation
of SAN components when a disruption occurs. This zoning technique also supports the recommended
practice of isolating an initiator with its targets; for example, zoning a host’s HBA ports with the
host ports of a target array. The initiator-to-target port zoning is applicable to all initiator-target
relationships, including the HP P6000 Command View server-to-array and source array-to-destination
array communications.
NOTE: This information is applicable to all HP P6000 Continuous Access implementations but
is particularly important in configurations using FCIP intersite links. See “FCIP gateway zoning
configurations” (page 95) for more information on FCIP configurations.
Three types of zones are used for traffic and fault isolation.
• Host I/O zones—The I/O hosts are each zoned separately to the host ports of the targeted
array. If the configuration includes multiple arrays, additional zones are created to isolate the
I/O hosts HBA ports with the additional arrays. Host fan-out configurations are shown in the
following sections.
• Replication zone—The replication zone includes only the array host ports intended to provide
HP P6000 Continuous Access replication traffic. The ports selected from each array should
be similar. For example, use ports 1 and 3 from a pair of 8-port controllers or use FP1 from
a 4-port to an 8-port relationship. This zone limits the FP ports that an array can access for
creation of HP P6000 Continuous Access communication paths. When additional array pairs
70 Implementing remote replication