ISCSI and ISNS

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I'm finishing up the ISCSI and ISNS set up videos. What does isns do for iscsi that I can observe or work with? I set up the services in my lab, but now what? The RFC in the show describes auto discovery. Well, in the beginning of the show Cherokee set up the iscsi initiator and target which were automatically found and added in the set up. I read this in the rfc for example, and it seems that action is already happening without isns. So I'm curious as to what would happen without isns. I'm not sure of how to lab it with and without.

An iSCSI initiator will query the iSNS server to discover the
presence and location of iSCSI target devices. It may also request
state change notifications (SCNs) so that it can be notified of new
targets that appear on the network after the initial bootup and
discovery. SCNs can also inform the iSCSI initiator of targets that
have been removed from or no longer available in the storage network,
so that incomplete storage sessions can be gracefully terminated and
resources for non-existent targets can be reallocated.

@John-DeWilde
Internet Storage Name Service (iSNS), is a protocol that can be used to supplement the iSCSI configuration. You can install it via the add roles and features wizard on your Windows server. It is typically leveraged for large scale deployments because once configured with each initiator server(s) iSNS acts similarly to DNS to Autodiscover the targets instead of going through that process individually like in the demonstration.

I'm very grateful for such a clear explanation. i've continued to try and read additional resources, but I've not been successful Thank you for your time, and pointing out the difference between the lab and production.

@John-DeWilde
Anytime!