Dell AX100i Power Supply Fault

something else is wrong if the lun did not trespass to SPA.  You need to have that looked at.  The array should be fully functional if you have 2 powersupplies and 1 fails.

On the AX100 series, each storage processor is fed only from it's own powersupply (EMC changed this with the AX150).

So when 1 powersupply fails, it's matching storage processor is down till the powersupply is replaced.

I never could figure out why they did that, but it had 1 advantage; to reboot a storage processor you'd just pull the powersupply for it.

On the AX150 under services EMC added an option to reboot a storage processor, but the AX100 didn't have this, so the single powersupply per SP came in handy in the end.

Everything you said is true, but that doesnt answer the question as to why the luns didnt fail over.  Is powerpath installed on the HOSTS.  If not, maybe the luns wouldnt have access anyway.  Or maybe only have a link to that one SP.

Hey guys, also working on this issus (same company) and powerpath is not installed.

 

This is not the first time we've had a powersupply go in it but in the past we were able to run both virtual disk from 1 power supply with 1 storage processor (without write caching).  For whatever reason in this case we're stuck. 

 

Basically right now we have PSA/SPA plugged in and running, PSB is out of the machine and SPB is offline because of that.  We have 2 virtual disks, virtual disk 1 is fine, readable and accessible.  Virtual disk 2 says its faulted.  I can log into navisphere and try to force virtual disk 2 to go to SPA but it says "transfer of ownership failed".  On suggestion of the dell rep I did try powering off the ax100i and putting the good power supply into slot b and booting up but for whatever reason virtual disk 1 was then assigned to PSB/SPB and virtual disk 2 was now assigned to PSA/SPA and still faulted, tried to reassign and same "transfer of ownership failed" message.  The dell tech thought this might free it up and allow me to move to the other SP but no luck.  At this point we spent the weekend moving what we could off of virtual disk 1 (as I don't trust it anymore) and restoring what was on virtual disk 2 and creating some poor man's storage (temp!!).  So basically nothing is using this SAN right now in case I need to try anything with it.  Any one have any idea's?

Do any drives show faulted?  Do SPCOLLECTS show anything that might point you to a failure?

? You got SPB online and VD 2 moved over to SPA?  Thank makes no sense.

 

Yes, the SPCOLLECTS are the diagnostic files.

all drives show normal, sorry I'm not sure what SPCOLLECTS is? Are you refering to the diagnostic files?

Yes, it definitely isn't what I expected.  Once a good power supply was in SPB (and SPAwas left blank) then VD1 and VD2 swapped places.  VD1 was still accessible on SPB and VD2 (now on SPA) was still faulted. Strange.

 

I sent the files to Dell though I didn't look at them myself, I'll look now as it was a long weekend and honestly didn't think of it.  Next day service on a friday at 5pm means tuesday for the new PS....