Multiple target mode, Automatically configure multiple target mode, Manually configure multiple target mode – ATTO Technology 2500C User Manual
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Configuration: mapping iSCSI
Multiple Target mode
Multiple Target mode breaks the single iSCSI
node of the iPBridge and replaces it with a much
more configurable mapping scheme. This new
mapping scheme allows you to segregate storage
into different iSCSI nodes within the iPBridge,
with each iSCSI target having its own set of
access criteria.
For example, if you have two servers and a library
with four tapes and a media changer, the default
mapping would provide both servers access to all
tapes and the media changer (single target mode).
If you configured Multiple Target mode, you
would be able to map some devices to one server
and other devices to the other server, requiring
separate usernames and passwords for access.
CAUTION
CAUTION
If actual storage is mapped to more than
one iSCSI target and a server has
authorization for both targets, the server
could show duplicate storage without any
warning to the user.
If Multiple Target mode is enabled, the
Automap, Route, RouteDisplay and CHAP
CLI commands behave differently. (Refer to
To control access, different CHAP account names
and CHAP secrets can be assigned to each target.
(Refer to
Single Target mode is the default. Use ATTO
ExpressNAV interface to map devices
automatically or manually. Refer to
Automatically configure Multiple Target
mode
1
From the ExpressNAV main menu, click on the
iSCSI menu item on the left side of the screen.
2
Click on the Multi Target Mode enabled
button.
3
Click Submit.
4
Go to the Mapping page and type [name] in
the Add an iSCSI target box
The name is a suffix appended to the standard
IPBridge iqn name. The suffix name can be up
to 24 characters.
5
Click on Submit.
6
In the greyed box at the bottom of the page,
click on the target name you created.
7
In the next mapping page, click on AutoMap
• All the CLI commands necessary to enable
mapping are performed.
• The iPBridge maps itself as a device at LUN
0.
• A target name suffix is added to the iqn of
each SCSI device such as
bxtyy-vendorid-devicename
• x is the iPBridge SCSI port number
• yy is the SCSI device SCSI target ID
• vendorid is the SCSI device vendor ID
• devicename is the SCSI device’s
inquiry device name.
8
To save the configuration, go the Restart
Firmware page and click Restart.
Manually configure Multiple Target mode
1
From the ExpressNAV main menu, click on the
iSCSI menu item on the left side of the screen.
2
Click on the Multi Target Mode enabled
button.
3
Click Submit.
4
Go to the Mapping page and type [name] in
the Add an iSCSI target box
The name is a suffix appended to the standard
IPBridge iqn name. The suffix name can be up
to 24 characters.
5
Click on Submit.
6
In the greyed box at the bottom of the page,
click on the target name you created.
7
After the next mapping page opens, drag the
boxes representing SCSI devices to the LUNs
you want. (See Exhibit 2.4-2.)
8
Click Submit.
9
Repeat from
Step 4
for each target you want to
configure.
10 To save the configuration, go the Restart
Firmware page and click Restart.