Using Wwns; Using Port Numbers - HP 316095-B21 - StorageWorks Edge Switch 2/24 User Manual

Using WWNs

To identify a zone member by WWN, use the 16-digit WWN of the device. For
example:
10:00:08:00:88:40:C0:D4
In EWS the WWN displays with the Switch or Director manufacturer's name before
the WWN. The WWN is assigned to the Fibre Channel interface or HBA installed in
devices such as servers or storage devices. Although the device may also have a node
WWN, this WWN is not used for zoning identification.
NOTE: Nicknames can be assigned to the WWN using the HAFM Product Manager, not EWS.
The advantage of identifying a zone member as the WWN of the attached device is
that the identification will not change if fiber cable connections to ports are
rearranged. This is especially important if you are using spare ports. You can simply
move the fiber cable to a spare port from a failed port and still maintain the zoning
configuration.
The disadvantage of identifying a zone member by the WWN is that removal and
replacement of a device HBA or Fibre Channel interface (thereby changing the device
WWN) disrupts zone operation and may incorrectly include or exclude a device from
a zone.

Using Port Numbers

To identify a zone member by port number, use the domain identification number of
the managed product and the port number on that managed product. For example:
Domain 1, Port 1
NOTE: Port numbers cannot be used for zone members if the interoperability mode for the
Switch or Director is set to Open Fabric 1.0 mode.
Port numbers can be 0 through n, with n representing the number of ports on the
managed product minus one. When you define a zone member by a port number, any
device attached through that port is included in the zone. A port number that you
assign as a zone member is automatically prefixed with the domain identification
number of the managed product.
The advantage of identifying a zone member by port number is that if the HBA on an
attached device fails, you don't have to identify the member with the WWN of the
replacement HBA.
embedded web server user guide
Configuring Zones
3–7