Nexus 3604 - iSCSI Host

Hello Guys,

I've been tasked to check a peculiar setup.

So the client has 2 Cisco Nexus 3604 who pose as their Storage Switching. They are connected to a SAN server via ISCSI.

The connection itself is fully on Ethernet ports, I do not see any special type of configuration for the ISCSI, I haven't really touched ISCSI all that often so I'm guessing it's normal that they just connect to Ethernet ports.

So the 2 Cisco Nexus have a vPC domain configured between them, but the connections to the ISCSI servers are all orphan-ports, again in a normal setup you would tell them to look at this. The ports are just access ports in a single VLAN with no port-channel configuration (hence the orphan port).

Now my simple idea of the server access would be to hook both ISCSI1 and ISCSI2 into an LACP port-channel so we can have full vPC down to the host, but I'm not sure if the host will take this and if this how it should be. I've always remembered that SAN should be Path A and Path B and there should be no interferences, no idea if this is the same with ISCSI?

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Problem Scenario:

Nexus 3K2 has been damaged in the front and is showing weird behaviour, spontane reboots. (I can't see the logs as they are flushed each time the chassis reboots). In the below setup the ISCSI hosts should survive as the 3K1 has never rebooted. But they have to perform manual actions sometimes on their DB to set things correct.

I would propose to replace the faulty switch as well, just to avoid the reboots. But they are also asking if the below setup is ok, I would say no because having a vPC domain with orphan ports is just missing the point, but it's an ISCSI server and I have no experience with that.

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So the setup is a follows (simple drawing):

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NEXUS 3K1. ---------------------- vPC Domain 100: VLAN Trunked: 100 ----------------------------- Nexus 3K2

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DB03 ------------------------------------------------------------------------------------------------------------------DB04

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So DB03 is connected to Port 1 on 3K1 and 3K2

So DB04 is connected to Port 2 on 3K1 and 3K2

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Ports 1 and 2 on 3K1 are marked as ISCSI1

Ports 1 and 2 on 3K2 are marked as ISCSI2 (Something I don't fully understand)

All ports are configured in access plan 100 and are orphan ports, there is no logical port-channel configuration anywhere. Only the vPC domain is configured and the ports.