ECC Errors - Which RDIMM?

[lunadesign]

Fairly sure they are zero numbered.
These were corrected 1 bit errors by the way, so not errors that are going to cause a problem (just yet).

Thanks David! Would any of the other screens within MemTest confirm the zero-based numbering?

The fun part is that Supermicro labels the slots DIMMA1 through DIMMH1 but I'm not sure "A" is the first channel. I'm thinking this because their memory population guidelines suggest populating DIMMC1 first, then DIMMD1.

Since this is for a file server, I'm definitely going to want to fix this one way or another.

[David (PassMark)]

Fairly sure they are zero numbered.
These were corrected 1 bit errors by the way, so not errors that are going to cause a problem (just yet).

[lunadesign]

I'm using MemTest86 V10.0 Pro to test some new ECC RDIMMs on a Supermicro H12SSL-NT with an EPYC 7262.

I'm nearing the end of Pass 1 and have already seen 3 ECC Errors detected (one during Test 8, two during Test 13).

In each case, the message identifies "Channel-Slot: 3-X".

Do the channel numbers on this platform start with 0 or 1? I'd like to know so I can figure out which RDIMM I need to re-seat and/or replace.

I'm guessing the "X" part means "N/A" since this motherboard has only 1 DIMM slot per memory channel.

Thanks!