HP AE370A HP StorageWorks Fabric OS 6.x administrator guide (5697-0015, May 20 - Page 388
For the 4/256 SAN Director with an, FC4-48 port blade and the DC Director, with an FC8-48 port blade
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• Is available on 1, 2, 4, 8 and 10 Gbps platforms. • Ensures that the name server does not return any information to an unauthorized initiator in response to a name server query. • Is exclusively enforced through selective information presented to end nodes through the fabric Simple Name Server (SNS). When an initiator queries the name server for accessible devices in the fabric, the name server returns only those devices that are in the same zone as the initiator. Devices that are not part of the zone are not returned as accessible devices. Fabric OS uses hardware-enforced zoning (on a per-zone basis) whenever the fabric membership or zone configuration changes. The exact zoning methodology varies on different switch models. Table 87 shows various HP switch models, the hardware zoning methodology for each, and tips for best usage. Table 87 Enforcing hardware zoning Fabric type Methodology Best practice Brocade 2000-series Enable hardware-enforced zoning only on domain,port zones; WWN or mixed zones are not hardware-enforced. Any domain,port zone that overlaps a mixed or WWN zone is not hardware-enforced. Use domain,port identifiers. Do not identify a zone member by its WWN. An overlap occurs when a member specified by WWN is connected to a port in a domain,port zone. The domain,port zone loses its hardware enforcement even though a review of the zone configuration does not indicate it. HP StorageWorks 4/8 SAN Switch, 4/16 SAN Switch, Brocade 4Gb SAN Switch for HP p-Class BladeSystem, Brocade 4Gb SAN Switch for HP c-Class BladeSystem, SAN Switch 4/32, 4/64 SAN Switch, SAN Switch 4/32B, 400 MP Router, 4/256 SAN Director, and the DC SAN Backbone Director (short name, DC Director) Enable hardware-enforced zoning on domain,port zones, and WWN zones. Overlap of similar zone types does not result in the loss of hardware enforcement. Overlap with other zone type results in the loss of hardware enforcement. As in the Brocade 2000-series switches, connecting a device specified by WWN to a port specified in a domain,port zone results in loss of the hardware enforcement in both zones. For the 4/256 SAN Director with an FC4-48 port blade and the DC Director with an FC8-48 port blade: If ports 16 through 47 on the FC4-48 port blade use domain,port identifiers, then session-based zoning is enforced on these ports. Use either WWN or domain,port identifiers. Mixed switches Enable hardware-enforced zoning according to each switch type. Use the portZoneShow command to find the zone type to which a device is attached. Use domain,port identifiers. You can use WWN identifiers if you place disk and tape targets on HP 2Gb and SAN Director 2/128 models, and do not use domain,port identifiers. 388 Administering Advanced Zoning
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