Hardware manual

Group Administration iSCSI target security
8–5
When an initiator tries to log in to a target, the group uses access control records to determine if access should be
authorized. However, access control records do not prevent multiple initiators, either on the same computer or
different computers, from accessing the same target.
Therefore, by default, the group disabl
es multi-host (shared) access to a target. Therefore, only one iSCSI qualified
name (IQN) can connect to a target at one time.
If all group members are not running PS Series Firmware Ve
rsion 4.0 or higher, the group allows multi-host access
to targets.
An iSNS (Internet Storage Name Service) server can facilitate iSCSI initiator
discovery of iSCSI targets in a SAN.
Configuring the group to use an iSNS server
You can configure a PS Series group to allow an iSNS (Internet Storage Name Service) server to automatically
discover and maintain an up-to-date list of group targets. The iSNS server then provides the target names to
initiators configured to use the server.
Note: By default, the group disables target discovery by iSNS serv
ers. If you want iSNS servers to discover a
target, you must enable this functionality on the target.
Requirement: The iSNS s
erver must be accessible to all the group members.
A group disables automatic discovery of group targets by iSNS servers only if all the group
members are running PS
Series Firmware Version 4.1.4 or a higher version. If a member is running
a previous firmware version, iSNS servers can automatically discover all group targets.
Set up the iSNS server and configure the iSCSI initiator to use the iSNS
server for discovery. See
your iSNS server and iSCSI initiator documentation for details.
To display the iSNS configuration in the group, click
Group, then Group Configuration, and then the iSCSI
tab. The Group Configuration – iSCSI window appears. See the online help for information about the data fields
and options.
To configure an iSNS server:
1. In the iSCSI Discovery panel, under iSNS servers, click
Add.
2. Specify the IP address for an iSNS server and click OK. Use the format ip_address:port if using a port other
than 3205.
You can specify up to three IP addresses. The group uses only one
iSNS server at a time. The first server listed
is the default server. If the default server is not available, the group uses the other servers in the order specified.
Click the up and down arrows to change the IP address order.
3. In the Group iSCSI window, click
Save all changes (Control+S).
Modifying an iSNS server
To modify the IP address for an iSNS server, select the address in the iSCSI Discovery panel in the Group iSCSI
window and click
Modify. Change the IP address, click OK, and then click Save all changes (Control+S).