HP StorageWorks Fabric OS 6.x administrator guide (5697-7344, March 2008)

392 Administering Advanced Zoning
• 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 86 shows various HP switch
models, the hardware zoning methodology for each, and tips for best usage.
Table 86 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.
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.
Use domain,port identifiers.
Do not identify a zone
member by its WWN.
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.