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June 11th, 2019 13:00

Some path to server are down? but not?

We have a SCv3020 with two hosts connected via SAS both controllers cabled. Host one is up and fine, but host two for some reason is saying some paths to the server are down... but I can't seem to see where it's seeing this?

 

the SAS Fault domain 2 (the one this server is on)  has both top and bottom controllers listed as status UP and connected - Yes both green.

Protocol endpoints are listed as Active/Optimized and standby...

 

But when you select the srever in storage center and look at hte Server HBAs group it says port type SAS connectivity Partial

 

not seeing anything odd here...

what am I missing?

1 Rookie

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23 Posts

June 12th, 2019 09:00

not sure what was going on there, but a day later and rebooting all the hosts and its working ok again

2 Intern

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230 Posts

June 12th, 2019 09:00

Hello BSH-RESCH,
Has anything changed since you configured the servers, or is this a new configuration? I would first verify all cables are fully seated, and that you cabled according to Dell EMC SC Series Storage with SAS Front-end Support for VMware vSphere
https://downloads.dell.com/solutions/storage-solution-resources/VMware-with-SAS-FE%20Solutions-Guide-SC-Series-Dell-EMC-2017-(3027-CD-VM).pdf

Also verify the drivers based upon page 12 section 4.2.3 SAS HBAs of Dell EMC SC Series Best Practices with VMware vSphere 5.x–6.x
https://downloads.dell.com/manuals/all-products/esuprt_solutions_int/esuprt_solutions_int_solutions_resources/general-solution-resources_white-papers8_en-us.pdf

 

1 Rookie

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23 Posts

June 12th, 2019 12:00

we actually just configured it and began testing the failover capabilities... which worked correctly... the second time everything came back up as expected except for that message about partial connectivity but nothing indicated there was a link down and everything worked right.. all current best pratice guides were followed for the SCv3020 and ESX 6.7 on SAS today everything is working correctly, just an odd case for that one time
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