topic Re: Message: ses.multipath.ReqError: SAS disk shelf detected without a multipath configuration. in ONTAP Discussions

Message: ses.multipath.ReqError: SAS disk shelf detected without a multipath configuration.

NAYABRSK — Wed, 04 Jun 2025 14:48:24 GMT

Hi All,

I have been getting the alert as below may i know if this is a kind of BUG ?

Ontap Version :- 8.2.3P5

Message: ses.multipath.ReqError: SAS disk shelf detected without a multipath
configuration.

Description: This message occurs when the system detects that a SAS disk shelf
is in a single-path cabling configuration.

Action: Check for SAS disk shelf enclosures with only a single path using the
'sasadmin expander_map' command. Physically inspect all SAS cables on the
attached storage for secure and correct connection.

Thanks,

Nayab

Re: Message: ses.multipath.ReqError: SAS disk shelf detected without a multipath configuration.

Sahana — Thu, 27 Jul 2017 08:45:35 GMT

Hi,

Found this bug: http://mysupport.netapp.com/NOW/cgi-bin/bol?Type=Detail&Display=950418

Re: Message: ses.multipath.ReqError: SAS disk shelf detected without a multipath configuration.

nigelg1965 — Thu, 27 Jul 2017 10:50:45 GMT

Run config adviser (v 4). It's really good at telling you where you've got cabling problems.

Also I seen this on smaller systems with only 4 SAS ports and someone has decided to put different disk type shelves on separate loops as they traded resilience for possible performance.