C2F power module has insufficient hold time.

Hello, 

 I'm pretty sure its not a firmware issue.  Does this environment run VMware?   

 Regards.

Don 

Don, 

Yes we are running VMWare 5.5

Your data maybe in danger because of https://kb.vmware.com/kb/2049103

You should upgrade to 6.0.6h2 or higher on your EQLs. About your problem.... if i remember right Dell swapped the effected CM in my member

Regards,
Joerg

Hello, 

 Then you potentially have a problem.  There is a known issue with EQL FW earlier than 6.0.6-H2 that can result in VMFS Datastore Heartbeat corruption.  

 Is this just a single member group?  

 To help mitigate the risk, please make sure that all of the best practices for ESXi with EQL are set. 

http://en.community.dell.com/techcenter/extras/m/white_papers/20434601/download

You should get it back under contact if possible and upgrade the firmware and get the CM replaced. 

 Regards,

Don 

I just encountered the same problem "C2F power module has insufficient hold time", indicating Battery: Failed on active controller. Then I accidentally discovered a possible solution is to press Restart, ie, switching the controllers (active>passive). After the switch over is completed, the failed battery return to GOOD!!! No idea why this fixed the problem, but no harm to try if you guys encountered the same battery failed problem in the future. 

Hello, 

  I would not be sure the resolution is fixed.   Older versions of FW weren't as good at monitoring the passive controller HW.  If you can, during a maint window I would fail back to that controller to be sure that battery is actually a set of capacitors.  Which can leak, and fail.  

 Regards, 

Don 

#iworkfordell 

Just tried to fall back again per your suggestion, everything worked as expected. No more battery problem. Btw, F/W is ancient v5.2.11 

Attached was the original CF/Battery failed capture screen message

Updated: The original failed controller battery FAILED AGAIN after 1 hour! So the switching doesn't work, and the critical warning was not false positive. I need to replace the battery ASAP to avoiding leaking

Hello, 

 Thank you for the update.  I hadn't seen any false positives with those assemblies.  Both will likely need replacement.  

 Regards, 

Don 

#iworkfordell 

I have ordered the capacitor battery 0KYCCH. Is it enough? What do you mean by both? I thought only by replacing the battery shall fix the CF power module problem.

Hello, 

 I was referring to both controllers.  If one has gone bad, given their age the other will likely fail as well 

  Regards,

Don 

#iworkfordell 

Got it, thanks Don! 

Those 0KYCCH boards can be tricky to replace. There's a risk of damaging the connectors.  When we used to be under warranty they wouldn't let the customer replace them, it had to be a call out. 

We have had loads of these break over the years, nowadays they just replace the whole controller with refurb.

Actually, super easy to do, it took me 30 seconds to replace the battery.