Replaced Standby Power Supply Still Shows Faulted

Try removing the sense cable from the back of the SP, then reboot (turn off the power on the SPS) and while it's booting, plug the cable back in. We've seen some issue where the IEEE serial port on the back of the SP gets locked up and won't work any more until you power cycle the SP.

glen

Thanks for the suggestion. I tried what you said but now in Navishpere it has an error stating that Cabling Status is Unknown. Does that mean the serial cable is bad and should be replaced?

If you've already tried the above step suggested by Glen, try reseating SPS Sense Cable one more time then restart the management server for both the SP's  If this doesn't clear the error "Cabling Status Unknown' replacing Sense Cable will be the next feasible step.

I am not an expert with this hardware, how would I restart management server for the SP's?

Thank you, I will try that next.

Please, refer toHow to restart the Management Server for step by step instructions.

Hi,

Verify the TLA part number of new SPS with the old one.

It should be same. If it is different, contact EMC to get verified, if it is compatible with given model of the Array.

Thanks

Madhusudan

in the past it happened to me several time that the SPS monitoring cable wasn't connected right. After reconnecting it the fault went away.

We just had an SPS on one of our CX4-240s replaced twice before Support said to wait until the SPS test cycle runs on the weekend. They believe that the error will go away as soon as the normal test cycle completes and verifies the new SPS.

Has anyone else run across this before? I don't remember ever having to wait, but maybe this is something new with the CX4s. Or has it always been there and could be affecting this situation as well.

IMHO, Why would one has to wait until the SPS test cycle i.e. Battery Testing?! One could do test the batteries manually as well. I do not agree with the above solution provided they have any hardware revisions which is backed up by a proper documentation or a Primus Article.

glen Can you please, verify if EMC has any internal KB Article where it suggests this?

As you mentioned you have 2 SPS replacement for the same storage system and it still did not clear the fault/error. Here is something which I can suggest with out SP Collects Analysis: (Sorry, believe it or not even for single HDD failure I analyze/insist SP Collect analysis and most of the time end up with correcting hidden issues too)

- Verify the LED on the SPS.

- Reseat SPS

- Reseat Sense Cable

- Replace Sense Cable if Required

- Restart both the management servers together.

- Still no joy then, you might need to reboot the SP of the SPS showing faulted/cabling status unknown.

Only reason, I do not agree with the Support Resolution is, if the SPS is actually faulted and if you wait for an initial cycle to run you are putting your storage system vulnerable to second SPS failure!

Well, thank you for the kind words Rob but I am still wondering and waiting for glen to confirm if there was in revision made in the actual hardware Five 9% says, NO there wasn't. However, I just want to make sure of that and in this way update myself as well! Allen Ward, you might need to to Private Message Glen or may be me (I will try what I can) to verify the Support Resolution.

replacing the sense cable does actually make a lot of sense! Listen to Ankit, these are exactly the steps that I would take

Aren't you always tied up, Master Yoda! Force is getting weaker w/o your inputs!

Allen Ward : There you have it! So my action plan still remains the same.

I understand you have vast experience with all this but lets not assume things! Perhaps, you can PM me the Support Ticket Number, I might be able to verify what is going on.

Sorry guys, been tied up recently. As far as I know there has been no changes to the way the SPS works. If you install a new SPS, there is a charging time, but once the battery is charged it should send the signal to the SP that it's finished transisting. If the lites on the SPS are green, then it should be ready. The battery test on the weekend would tell you if the battery has the capacity to handle a discharge/recharge cycle.

We have seem issues with the actual SPS sense cable port on the CX4 (the IO Management Module), where the RS232 interface seems to be locked up. In some cases, reseating this module (a SP reboot would do the same thing), that seems to clear this issue. If a SP reboot of the SP reporting the sense cable fault does not clear the error and the cables have been replaced, then I would look at replacing the IO Management module, the RS232 port may be bad.

glen