topic Re: NMBLA-0002-1200 verity automatically failover in HPE Nimble Storage Solution Specialists

NMBLA-0002-1200 verity automatically failover

socr — Fri, 08 Sep 2023 14:12:33 GMT

Hi Admin

How to shut down controller A of NMBLA-0002-1200 to verity automatically failover? In the GUI window, there is only Shut Down Array.

There is a paragraph in HPE's operating document::
While you can manually perform a failover, a failover can also be system driven. For example, in an iSCSI array, a failover can occur when the standby controller has better connectivity. In a Fiber Channel array, a failover will occur when the active controller loses all connectivity.
Note: A failover will not start automatically until connectivity to the array is lost for ~6 seconds.

I don't understand whether "connectivity"is only mean network (including ethernet or fiber)?
not ncludes power supplies and fans,right?
So I can just unplug controller A's fiber channel to verify automatic failover?

Re: NMBLA-0002-1200 verity automatically failover

SprinkleJames — Fri, 08 Sep 2023 13:59:13 GMT

Yep, "connectivity" means Ethernet or Fibre Channel. Indeed, unplugging the cable(s) from all configured Fibre Channel ports on the active controller should trigger a controller failover.

Management ports apply as well - if you unplug an Ethernet port used for management on the active controller, I would expect that to trigger a controller failover.

I don't know the failover rules that apply to other components, such as fans / power supplies.

Re: NMBLA-0002-1200 verity automatically failover

socr — Mon, 11 Sep 2023 01:26:04 GMT

We'll test on 9/12 and then get back with the test results.
Thank you.

Re: NMBLA-0002-1200 verity automatically failover

socr — Wed, 13 Sep 2023 01:17:53 GMT

Thanks, It works.

Re: NMBLA-0002-1200 verity automatically failover

Sunitha_Mod — Wed, 13 Sep 2023 06:57:21 GMT

Hello @socr,

That's excellent!

We are extremely glad to know the issue has been resolved,