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Author Topic: Warning Signs In HMC  (Read 9397 times)

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Warning Signs In HMC
« on: August 20, 2008, 02:58:13 PM »
We recently experienced an unplanned power outage in our data center and have had a few issues as a result.
Fortunately, as far as I can tell the only components of the system that were affected were the TSM tape library and the HMC, and perhaps a fiber channel switch connecting the tape library to the TSM server (which is extremely lucky).

I have halted and restarted TSM which can now see the library and appears to be using it happily so Im pretty sure that that side of things is o.k.

In my HMC I can see a couple of exclamation mark warnings for each of the P570s.
I checked the SFP and there were a couple of issues: one referred to a communications fault between the service processors and the HMC (not surprising considering it lost power!) and the other was an error stating that too many fiber channel errors had been received (again not surprising as the tape library had lost power).

Now, I have closed both of those down in the SFP, but the yellow exclamation marks remain. Is it the case that I need to reboot the p570s before these are cleared down or is that wishful thinking?

Should I continue to look for problems and escalate to IBM as appropriate?


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Re: Warning Signs In HMC
« Reply #1 on: August 21, 2008, 03:36:36 PM »
There are two ways to take care of this. (Actually three, see last comment, but I doubt it is useful for you).
1) Use the ASMI interface to reset the system LED
2) Use a HMC Service Tool to do the same. (I dont have access to an HMC right now, or I would give you the exact name of the Service Tool)

Note: Power Off/Power On does NOT reset the flashing System Indicator (HMC Warning) - only a Factory Reset, or one of the two methods above will stop the flashing.