iSCSI Portsets - Adding Interfaces.. disruptive??

GregNOAA — Wed, 04 Jun 2025 14:29:34 GMT

I noticed that my portset "PG_iscsi" only has my interfaces for nodes 1-2 of a 4-node cluster.

Would adding the interfaces for nodes 3 and 4 cause any disruption or would this be similar to adding WWPNs to an igroup?

The problem is that some of my hosts cannot "see" the LUNs as they are on nodes 3 and 4.

Ontap 9.1P6

Thank you!

Re: iSCSI Portsets - Adding Interfaces.. disruptive??

sgrant — Thu, 12 Oct 2017 14:34:37 GMT

Hi Greg,

Adding additional LIFs to a portset will not be disruptive. The igroup is already bound to the portset, the hosts are just waiting for you to open those LIFs on the other nodes so they can access the LUNs.

This will however add additional paths to the LUNs on the current nodes 1&2 - so need to ensure Selective LUN mapping (SLM ) is configured to ensure only the local nodes hosting the LUNs are available, or that the additional paths do not exceed any maximums for the OS type - see SAN Configuration Guide.

Hope this helps.

Cheers,

Grant.

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iSCSI Portsets - Adding Interfaces.. disruptive??

Re: iSCSI Portsets - Adding Interfaces.. disruptive??