When using Storage Navigator Modular 2 (SNM2) to edit a host group on an AMS2000 array you have the option to select multiple ports (see screenshot #1 below). You should not select multiple ports when editing host groups unless you have configured all the ports so that the host group numbers match exactly. If you do select multiple ports and the host group numbers do not match, then you risk losing access to your storage for the given host group number on the other ports.
When you select multiple ports SNM2 modifies the host groups based on group number, not name. As an example, screenshot #1 below will modify Group 002 on each port that you have selected regardless of what you have named the host groups. Host Group 002 may or may not have the same configuration (Name, associated LUN mappings, etc) across the ports based on the order in which you have created host groups across the different ports.
If you do select multiple ports you will get the warning that is shown in screenshot #2 that you are editing host groups across multiple ports. The key here is that SNM2 is going to edit the Host Group on the other ports based on Host Group number and not the Host Group Name.
Refer to Screenshot #3 and look at Host Group 003 across all the ports. Host Group 003 is different for ports 0A and 0B. If you were modifying Host Group 003 on port 0A and selected all ports you would overwrite the Host Group 003 on ports 0B and 1B.
As another example look at host Group Named “Test Group 3” across all ports and notice that it has a different Host Group number on port 0A and port 0B. For this reason we recommend that you do not select multiple ports when editing Host Groups on the AMS2000 arrays using SNM2.
If you have any questions you can contact Lumenate at (866) 358-8999.
Screenshot #1
Screenshot #2
Screenshot #3
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