HP A7990A - StorageWorks SAN Director 4/16 Blade Switch, Hardware Reference Manual

Page: 119 / 144

DC SAN Backbone Director hardware reference guide 119
NOTE: Only IQNs can be used as an entry to establish access control.
A Fibre Channel feature, Default Zoning, disallows access to all hosts when
cfgDisable
and
cfgClear
are run. iSCSI ports function the same way for any action based on default zoning. In other words, if
default zoning is on and
cfgDisable
and
cfgClear
are run, the iSCSI hosts are also denied access to
the iSCSI virtual targets irrespective of a discovery domain set defined. To avoid this behavior, verify that
default zoning is turned off. The discovery domain set is activated only after a
cfgEnable
is performed.
NOTE: Neither the discovery domain nor the discovery domain set are deleted when you run
cfgDisable
and
cfgClear
.
Creating discovery domains
A discovery domain provides the flexibility to define the host-to-target access as follows:
iscsicfg [--create | --show | --add | --delete | --clear] dd [-d DD name ]
[–m DD_Members ] args
To create a discovery domain, run the i
scsicfg --create dd
command with the -d and -m operands
using a comma to separate members:
:
Creating/enabling discovery domain sets
Once a discovery domain is created, it can be added to the discovery domain set to enable the
configuration. The discovery domain set contains discovery domains. More than one discovery domain set
can be created/defined but only one can be enabled at any point in time. The active/enabled discovery
domain set will be enforced across all the switches in the fabric.
When you execute
commit
, the switch on which the command is executed will become the master and will
merge the discovery domain database to the rest of the IP-aware switches. Then use
iscsicfg show
fabric
to verify the database merge.
iscsicfg [ --create | --show | --add | --delete | --enable | --disable ]
ddset [-n
DD Set name ] [–d DD_Names ] args
NOTE: If there is a conflict, then the database on the rest of the switches will be overridden by the
database on the current switch (which initiated the merger) and intervention is needed to clear the
conflict. However, the rest of the switches will function normally. There is no segmentation of E_Ports when
the discovery domain set database conflicts.
To create a discovery domain set, use the iscsicfg
--create ddset
command with the -n and -d
operands:
:
An explicit enable operation needs to be done to enable the discovery domain set. To enable the newly
created DDSet, use the following command:
switch:admin> iscsicfg --create dd -d mynewdd -m
iqn.2222-23.mytest1,iqn.2343-58.newtest1
Operation Succeeded
switch:admin> iscsicfg --create ddset -n myddset -d mydd,mynewdd
Operation Succeeded