I'm looking at zoning 2 FC switches which were not zoned when initially implemented for some reason. They are IBM/Brocade switches and I've found this page to be quite helpful.
I'm just trying to figure out whether to use the WWN or WWPN when adding devices to a zone. I understand that the WWN identifies a device and the WWPN a specific port.
In simplified form lets say I have:
- 1 host/WWN with 2 HBAs/WWPNs, and
- 1 storage array/WWN with 2 FC ports/WWPNs.
In English, I would say "grant host1 access to storage1", so does that mean I just use the WWNs in the zone definition?
Is there a reason why using the WWPNs is preferable?
Should I just use both?