Assigning Luns To Storage Subsystems; About Read-Only Zones - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

Chapter 30 Configuring and Managing Zones
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Click the zone where you want to add members and click the Insert icon.
Step 3
You see the Add Member to Zone dialog box shown in
Figure 30-42
Click either the WWN or FCID radio button from the Zone By options to create a LUN-based zone.
Step 4
Check the LUN check box and click the browse button to configure LUNs.
Step 5
Click Add to add this LUN-based zone.
Step 6

Assigning LUNs to Storage Subsystems

LUN masking and mapping restricts server access to specific LUNs. If LUN masking is enabled on a
storage subsystem and if you want to perform additional LUN zoning in a Cisco MDS 9000 Family
switch, obtain the LUN number for each host bus adapter (HBA) from the storage subsystem and then
configure the LUN-based zone procedure provided in the
page
Refer to the relevant user manuals to obtain the LUN number for each HBA.
Note
Caution If you make any errors when assigning LUNs, you might lose data.

About Read-Only Zones

By default, an initiator has both read and write access to the target's media when they are members of
the same Fibre Channel zone. The read-only zone feature allows members to have only read access to
the media within a read-only Fibre Channel zone.
You can also configure LUN zones as read-only zones.
Any zone can be identified as a read-only zone. By default all zones have read-write permission unless
explicitly configured as a read-only zone.
Follow these guidelines when configuring read-only zones:
•
•
•
OL-17256-03, Cisco MDS NX-OS Release 4.x
Add Member to Zone Dialog Box
30-40.
If read-only zones are implemented, the switch prevents write access to user data within the zone.
If two members belong to a read-only zone and to a read-write zone, the read-only zone takes
priority and write access is denied.
LUN zoning can only be implemented in Cisco MDS 9000 Family switches. If LUN zoning is
implemented in a switch, you cannot configure interop mode in that switch.
Figure 30-42.
"Configuring a LUN-Based Zone" section on
Cisco MDS 9000 Family Fabric Manager Configuration Guide
Advanced Zone Attributes
30-41