There was a bug about this too. As long as the ports ( a/b ) are not used to the same stack and ports (c/d) are not used on the same stack you are most of the way there.

Send the node shell output of
sadadmin expander_map

That would say a lot.

Typing errors courtesy of GBoard

Tim McCarthy, Principal Consultant

Proud Member of the NetApp ATeam
 
From: toasters-bounces@teaparty.net on behalf of Payne, Richard <richard.payne@amd.com>
Sent: Tuesday, April 16, 2019 11:11 AM
To: John Stoffel; Toasters
Subject: RE: SAS Connectivity Monitor: DualPathToDiskShelf_Alert
 
Hello,

If memory serves, this is due to multiple paths to a stack using the same SAS controller card. Best practice is of course to make sure that each of the redundant paths is on different hardware to remove that single point of failure.

IMHO it's more a warning (at least that's how I have interpreted it) than an error.

--rdp

-----Original Message-----
From: toasters-bounces@teaparty.net <toasters-bounces@teaparty.net> On Behalf Of John Stoffel
Sent: Tuesday, April 16, 2019 11:01 AM
To: Toasters <toasters@teaparty.net>
Subject: SAS Connectivity Monitor: DualPathToDiskShelf_Alert


Hi guys,

My out of support FAS3120 running 8.1.2 7-Mode has suddenly had two instances of the following message sent via autosupport notifications.

SAS Connectivity Monitor: DualPathToDiskShelf_Alert[50:05:0c:c1:02:04:db:ad] on mafs1a at Mon
Apr 15 20:04:00 PDT 2019

But I'm not seeing anything in the event or alert logs, nor do I see any problems via sysconfig, storage shelf show, etc.

I know the cables haven't been touched since I was just at the site this past weekend and the rack doors are closed and locked.

Thanks,
John

P.S. And yes, this sucker should have been upgraded two years ago, but management won't let us...
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