iSCSI paths

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koopa79
Posts: 189
Joined: Mon Apr 14, 2014 9:07 am

iSCSI paths

Post by koopa79 »

I was wondering if anyone could help me. When i Look at a host on our 3par, i can see it has 8 paths but we seem to have duplicates on each port. So i would expect to see 4 paths not 8.

The question is can this cause issues have duplicates as we've been having issues with this host. I'm also not saying all our hosts have this issue, just a few.
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Rodix
Posts: 5
Joined: Mon Nov 25, 2013 4:29 pm

Re: iSCSI paths

Post by Rodix »

You have 4 nodes with 2 Ethernet ports each, so each host has 8 paths.
koopa79
Posts: 189
Joined: Mon Apr 14, 2014 9:07 am

Re: iSCSI paths

Post by koopa79 »

I understand the 4 nodes. but the 2 connections on each node are on the same port on each, i can understand 2 connections to a node but on different ports on those nodes.

or am i missing something?
RitonLaBevue
Posts: 390
Joined: Fri Jun 27, 2014 2:01 am

Re: iSCSI paths

Post by RitonLaBevue »

Maybe your host got 2 IPs and each of these IP sees 4 ports ?
Schmoog
Posts: 242
Joined: Wed Oct 30, 2013 2:30 pm

Re: iSCSI paths

Post by Schmoog »

at the end of the day, if you look at the screenshot, it says "host ports: 1" and "storage system ports: 8"

so 1 host port talking to 8 storage system ports equals 8 paths.
RitonLaBevue
Posts: 390
Joined: Fri Jun 27, 2014 2:01 am

Re: iSCSI paths

Post by RitonLaBevue »

1 host port, ok. I would say 1 IQN.
On ESX you can set an iqn for each ethernet adapter connected to storage or one iqn for the host.

I'm wrong ?
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