Hello good people, Anyone had similar issue on version 25.04.2.6? The system was running stable for months until today, but suddenly I have a lot of checksum errors on my drives. I had these errors on the other pool too, but cleared them with zpool clear command. I doubt it’s a drive related iss…

It “could” be however you will never really know for certain. I would recommend a few things: Memtest86+ for 5 complete test passes, or more. Prime95 (or similar) for 4 hours, or more. Scrub you pool. Ensure you do not have any corrupt files. Well if the file was corrupt when it was written, th…

[image] rumplin: Could be that all this was caused by the faulty cache drive. I suspect some data was being written from one pool to the other, and while being read from the cache drive, the data got corrupted. If data was corrupted on the cache drive and then read, it should have thrown a CK…

[image] joeschmuck: The manufacturer replaced it immediately and did not ask for the old one back. It wasn’t worth the effort for them, which means not cost effective. I guess that’s how we know that SSDs are not actually made of solid gold… :wink:

I can’t say it was the disk. The disk is removed and I still get checksum errors on the drives. The drive itself that was supposed to be faulty is now showing no errors? Error Information (NVMe Log 0x01, 16 of 64 entries) No Errors Logged Self-test Log (NVMe Log 0x06) Self-test status: No self-…

The first five seconds of the memtest showed faulty RAM. (Of course, my RAM dies when the prices for RAM are trough the roof…)

Just to be sure, do you have another system where you can test the RAM? Sometimes MB can cause the RAM to fail the test

For now, only one RAM stick failed. The other one passed the tests a few times. The fun part is now sending the RAM back for RMA… They want the whole Kit to be shipped back. So that leaves me without the RAM. I’m sourcing now a single 8GB DDR4 stick, so that at least I can bridge the return time of…

Just for informational purposes. The RAM was tested when the system was build - PASSED The system was online for over a year, without any issues. The issue started happening this month.

[image] rumplin: The RAM was tested when the system was build - PASSED You’ve blown my mind. It’s possible for RAM to be fine at first, and then later start to fail? :exploding_head: [image] rumplin: So that leaves me without the RAM. Do you have any pets that you’re willing to part …

Are you this forums’ designated moron?

TrueNAS Scale - drive Checksum errors

TrueNAS General

winnielinnie January 21, 2026, 4:34pm 21

Topic for reference.

Topic		Replies	Views
ZFS Permanent Errors - How to resolve TrueNAS General SCALE , ZFS	39	660	February 15, 2026
Checksum error and resilvering disaster TrueNAS General	24	295	May 22, 2025
Identical CKSUM errors across all 7 drives in a raidz1 TrueNAS General ZFS	6	119	July 13, 2026
One or more devices has experienced an unrecoverable error. Not sure of cause TrueNAS General CORE	9	512	May 26, 2025
Checksum errors...CAN'T FIGURE THEM OUT! TrueNAS General	12	192	May 11, 2025

TrueNAS Scale - drive Checksum errors

Related topics