Saturday, April 4, 2020

X11SDV-12C-TLN2F stability issues

This post fits with the other X11SDV posts in 2H of 2019. Both of my X11SDV-12C-TLN2F boards had problems where they would run fine for hours or days at full load, but then randomly I would find them shut down.


Things I tried that did not work:

 - separating their electrical connections onto independent battery backups (previously they both shared a single 1500 VA UPS). This was about the same time I was replacing batteries in the UPS units and thought power blips might then lead to overload situations.

- swapping RAM between the units

- swearing a lot

- removing the AOC-SHG3-4M2P cards having the scratch SSD drives


Things I tried that did work:

 - Replacing the Fortron 250 W PSU (FSP250-60FAG) with a Fortron 300 W PSU (FSP300-57FCB)


Running these boards with 128 GB of RAM, boot SSD, and the PCI-E card + 2 SSDs drew 150-180 W. Hence, I figured the 250 W PSU would be fine, but one of the rails must not have been sufficient to supply the required load.

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