Yes, of course. I'll make a USB memtest from their site with rufus. 

52 minutes ago, trurl said:

Yes, but that builtin memtest only works if you are booting Legacy and not running ECC RAM. It won't work if you are booting UEFI.

 

You can download the latest memtest and boot it from another flash drive.

From the message above I understand it shouldnt be UEFI?

Just now, piratx said:

From the message above I understand it shouldnt be UEFI?

No. UEFI is fine, but you must use a different USB stick to run memtest if you use UEFI.

Now I am confused. I Need a usb stick either way to run it, no?

Different USB, you might mean from the unraid USB?

13 minutes ago, piratx said:

Different USB, you might mean from the unraid USB

Yes 

Okay, I am not crazy. This is what I understood the first time.

Almost there: 

Quote

 Array Started•Parity-Sync / Data-Rebuild 92.8 % 

 

And 3 errors so far. Running for 3 minutes now.




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7 minutes ago, piratx said:

And 3 errors so far. Running for 3 minutes now

No point in continuing. Any at all is unacceptable. It has already failed.

So its the new CPU?

1 minute ago, piratx said:

So its the new CPU?

Why do you think so?

I cannot understand exactly what I am seeing now.. 

The CPU is from Amazon warehouse, I couldnt find brand new at good price

 

Please let me know how can I fix this! TIA!

Remove 2 sticks and retest. If that passes the problem must be with the other 2, or possibly with the open slots.

 

Etc...

 

Process of elimination.

One pair only now.



Trying the other 2 sticks now.
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35 minutes ago, piratx said:

And 3 errors so far.

Which means all the time spent rebuilding disks was wasted, as you can't trust what was written.

 

All the bits and bytes that are read from and written to the disks interact with RAM, so those errors very well could have corrupted any data written to the hard drives at any point in the process.

 

Never use a computer with suspect memory to work with files you care about.

 

 

I've personally had a motherboard that would throw memory errors only when all 4 slots were populated, so it's necessary to test the system as it will be run.

 

In your case, you seem to have found a genuinely bad stick, hopefully you can replace it and be good. In my case, memtest came up clean on any given pair, in any given pair of slots, but once all 4 were together, it would error every time.

 

You need to get at least 1 full clean pass with the memory exactly as you plan to run the system. The downtime is a necessary evil to ensure the best chance of future success.

Same slots on the mobo and the other pair already runs for 8 minutes without any errors.
I can only use these two slots with one pair.

@JonathanM sorry. I am now wishing I had killed that rebuild when you told me too.


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Seems the second pair works!
I also checked the manual and those RAMs arent on rhe support list.
Maybe I will run the machine with 16GB and get the proper ones and memtest those to be sure this time.

I’ve read that unraid works on the RAM but this wasnt expected. I am really glad you guys are one of the best communities and now I have eyes to see clearer.
I am an unraid user for 3 years now without any issues… most of those came the last 5 months.


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2 minutes ago, piratx said:

sorry. I am now wishing I had killed that rebuild when you told me too.

School of hard knocks. Most times it's the knowledge that you earn the hard way that sticks with you best. 🙂

 

BTW, I don't remember if it was you or not, don't think so, but someone in the last day or two made a comment that their memory was new, so it shouldn't be bad. Given the lack of quality control in computer parts, the only memory you can assume is good is what you personally tested. New memory, or any time you make RAM changes, you should run a memtest cycle. Too important to skip.

1 hour ago, piratx said:

I’ve read that unraid works on the RAM but this wasnt expected.

Every computer works on the RAM. Even if the OS is installed on a hard drive or SSD, the CPU can't use it until it is loaded into RAM.

 

Everything goes through RAM, your data, the OS code, any programs you want to run, everything. And it all works like that on every computer regardless of OS or anything else about the hardware or software.

 

You don't want to run ANY computer unless the RAM is trustworthy.

16GB ready and tested. I’ve swapped the one of the sticks after that pass with the one of the failed test (the first one I did). Just to check if its only 1 dimm that causes this.


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Okay! Trying now the last dimm (which errored before) with a good one. In this mobo I cant install 3 dimms it should be either 2 or 4.

And the last dimm errors in the first 2 minutes of the test. So I have only one dimm to replace and rerun the test with 4 dimms now. Right?

 

Should I rebuild with those 2 good checked dimms now?


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Edited April 15, 20224 yr by piratx

7 hours ago, piratx said:

In this mobo I cant install 3 dimms it should be either 2 or 4.

Most times this is for speed reasons, not required. If memtest runs ok with 3 dimms, Unraid should as well.

Most times this is for speed reasons, not required. If memtest runs ok with 3 dimms, Unraid should as well.

It wont even start the Machine!


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1 minute ago, piratx said:

It wont even start the Machine!

Which motherboard?

M/B: ASUSTeK COMPUTER INC. PRIME B365-PLUS Version Rev X.0x

 

50 minutes ago, piratx said:

M/B: ASUSTeK COMPUTER INC. PRIME B365-PLUS Version Rev X.0x

 

https://dlcdnets.asus.com/pub/ASUS/mb/LGA1151/PRIME_B365-PLUS/E15233_PRIME_B365-PLUS_UM_WEB.pdf#p18

Strange to me that it won't start, it's been my experience that mismatched sizes result in single channel mode, not outright failure.