Factors To Consider When Implementing Zoning; Obtaining Professional Services - HP 316095-B21 - StorageWorks Edge Switch 2/24 Planning Manual

Physical Planning Considerations
If the configurations cannot merge, E_Ports that form the ISL for each fabric
element become segmented. The ports cannot transmit data frames between
attached switches (Class 2 or 3 traffic) but can transmit control frames (Class F
traffic).
Zoning configurations are compatible if there are no duplicate domain IDs, the
active zone set name is the same for each fabric (or switch in the fabric), and
zones with the same names in each fabric have identical members.

Factors to Consider When Implementing Zoning

Consider the following factors when planning to implement zoning for one or
more directors or switches in the enterprise. In particular, consider the
implications of zoning within a multi-switch fabric.

Obtaining Professional Services

Planning and implementing a multi-switch fabric can be a complex and difficult
task. HP recommends that you obtain planning assistance from our professional
services organization before implementing a fabric topology.
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Reasons for zone implementation — Determine if zoning is to be
implemented for the enterprise. If so, evaluate if the purpose of zoning is to
differentiate between operating systems, data sets, user groups, devices,
processes, or some combination thereof. Plan the use of zone members, zones,
and zone sets accordingly.
Zone members specified by port number or WWN — Determine if zoning
is to be implemented by port number or WWN. Because changes to port
connections or fiber-optic cable configurations disrupt zone operation and
may incorrectly include or exclude a device from a zone, zoning by WWN is
recommended. However, if zoning is implemented by WWN, removal and
replacement of a device's HBA or Fibre Channel interface disrupts zone
operation and will exclude a new device from a zone unless the device is
added to the zone set.
Zoning implications for a multi-switch fabric — For a multi-switch fabric,
zoning is configured on a fabric-wide basis, and any change to the zoning
configuration is applied to all switches in the fabric. To ensure zoning is
consistent across a fabric, there can be no duplicate domain IDs, the active
zone set name must be consistent, and zones with the same name must have
identical elements. Ensure these rules are enforced when planning zones and
zone sets, and carefully coordinate the zoning and multi-switch fabric tasks.
SAN High Availability Planning Guide