June 14, 20215 yr I have two Sabrent 2TB NVME drives in a btrfs raid 0 cache array called "Rocket" Does anyone know what the below errors mean? I started getting this last week, I wiped the cache and recreated it and it's come back. I've attached the unraid diagnostics too. Thanks in advance! tower-diagnostics-20210614-1412.zip Edited June 14, 20215 yr by Congles Update title to solved
June 14, 20215 yr Community Expert If means data corruption is being detected, and since you're overclocking the RAM with Ryzen that's a likely cause, or just bad RAM, see here: https://forums.unraid.net/topic/46802-faq-for-unraid-v6/?do=findComment&comment=819173
June 14, 20215 yr Author Oh wow... thank you. I didn't realise the RAM was overclocked, it shouldn't be. I must have got confused one day (as I have multiple machines) and set the ram at 3600 instead of 3200. I'll be fixing that ASAP. I'll report back if I continue to get the error
June 14, 20215 yr 50 minutes ago, Congles said: instead of 3200 You have 4 DIMMs of dual rank memory, 3200 MT/s is still too high as per the FAQ, you should aim for 2667 MT/s.
June 14, 20215 yr Author @ChatNoir thanks for pointing that out. Do you know, or have a link to, why we can't run the RAM at even spec speeds? I'm about to set it to 2667 but kinda bummed I didn't know about this before I purchased the ram because I could have saved myself a big of $$ going for slower ram (especially 128gb of the stuff) Thanks again!
June 14, 20215 yr 10 minutes ago, Congles said: Do you know, or have a link to, why we can't run the RAM at even spec speeds? Looks like it is pulled from Wikipedia : https://en.wikipedia.org/wiki/Ryzen The official Datasheets from AMD website are pretty basic, I guess you'd have to dig in more complex document to find details of the architecture's RAM management.
June 14, 20215 yr Author Ahh thanks, so it seems like an amd/architecture thing and not an Unraid OS / Server thing. I'll have a further read. Hopefully this fixes the recent instability I've been having. Thanks guys
June 14, 20215 yr Author Thanks @ChatNoir and @JorgeB for your help, Your discovery fixed my problem and the log events have now gone and everything seems to be stable again. Thanks!
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