Understanding SAN
These three components remain the same regardless of which protocol is used on the network. In some cases, the network may even be a cable between the initiator and the target, but in most cases, there is some type of switching involved.
Targets and initiators are configured by protocol. Refer to the documentation on a particular protocol (SAN Fibre Channel Configuration, iSCSI or SRP Configuration) for details.
Target and initiator groups define sets of targets and initiators that can be associated with LUNs. A LUN that is associated with a target group can only be seen via the targets in the group. If a LUN is not explicitly associated with a target group, it is in the default target group and will be accessible via all targets, regardless of protocol. Similarly, a LUN can only be seen by the initiators in the group or groups to which it belongs. If a LUN is not explicitly associated with an initiator group, it is in the default initiator group and can be accessed by all initiators. While using the default initiator group can be useful for evaluation purposes, its use is discouraged since it may result in exposure of the LUN to unwanted or conflicting initiators.
To avoid possible LUN conflicts when an initiator belongs to multiple groups, configure initiators within all groups before associating groups with LUNs.
To configure targets, go to the Configuration > SAN BUI page, use Fibre Channel, iSCSI, and SRP to navigate, and then configure the Ports, Initiator, and Target Groups controls.
To associate a LUN, go to the Shares > Shares > Protocols page and then configure the Target Group and Initiator Group controls.
Figure 18 Associate a LUN
Use the configuration san context of the CLI to operate on targets and initiators by protocol type. Then, use the shares CLI context to create LUNs and associate them with target and initiator groups.
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