Timmay

It took longer than expected because I had some cable issues during the parity check, but it's finally done, and there are no remaining errors. Thanks again for your help, JorgeB, I'm very grateful!

Thank you so much! Will mark your first reply as a solution as soon as the two parity checks come out clean. I really, really appreciate your support, kind sir! Cheers!

Thank you, I will run the corrections, run another pass as you advised, and will update here in... 3 to 6 days I guess. Thanks again for the quick response, I really appreciate it. Should I be worried about the two drives for which I attached the SMART logs, BTW?

Hi! Thanks for the advice, but could you please confirm that running a correcting check has no risk of making things worse? Sorry for asking, I appreciate your response, but it'd be nice to understand a little better before I go ahead. Thank you so much!

Hello kind UNRAID enthusiasts! I have been running an odd UNRAID server for the past year or so, with no apparent problem, that is, until a few days ago. Ran a parity check (with no error correction on the first run, as advised on these forums), and early in the process, I started seeing a bunch of sync errors spewing out rapidly. Luckily, it lasted for only about 20-30 minutes and then the whole parity check continued for about 36 hours (I might be wrong, might be a little bit more or less), but no more Sync errors were detected. Now I know I have a weird setup, please have pity on me: It's a former HP ZBook 15 workstation replacement laptop with a faulty keyboard and dying screen, hooked to a bunch of external USB drives. I know it's less than ideal, and I plan to change this setup as soon as budget will allow, but this is what I'm stuck with for the moment. Never had any sync errors in the past year, even though I do a parity check every 90 days or whenever I add/replace a drive in the array, so this bunch of sync errors is a new thing for me, and I don't really know how I should proceed next. Having spent considerable time on these forums in the past few days, my understanding is that : 1. I need to identify the root cause, which could be a faulty controller/cabling, etc. With my current setup, I'd say this is the most likely culprit, and I hope that some kindred spirits here will help me figure this out through my diagnostic log. I often have warnings about the SSD inside the laptop, which serves as a Cache : "Warning [UNRAID] - current pending ecc cnt is 1" (Disk is CT500MX500SSD1_1902E1E1F6BF (sdg)). Also, I have noticed a few SMART errors coming out of a 8GB External USB Drive, this is new and showed up during the Parity Check. It shows a reoccuring issue with the Cache SSD (I'm not sure how to fix this, is the drive failing or it's a bad connection?), and reallocated sectors for the 8GB Drive as well: 30-10-2024 20:23Unraid Cache disk SMART health [197]Warning [UNRAID] - current pending ecc cnt is 1CT500MX500SSD1_1902E1E1F6BF (sdg)warning 30-10-2024 14:04Unraid Disk 3 SMART health [198]Warning [UNRAID] - offline uncorrectable is 8ST8000DM004-2CX188_WCT0A1N1 (sde)warning 30-10-2024 14:04Unraid Disk 3 SMART health [197]Warning [UNRAID] - current pending sector is 8ST8000DM004-2CX188_WCT0A1N1 (sde)warning 30-10-2024 14:04Unraid Disk 3 SMART health [5]Warning [UNRAID] - reallocated sector ct is 16ST8000DM004-2CX188_WCT0A1N1 (sde)warning 29-10-2024 22:53Unraid Cache disk SMART health [197]Warning [UNRAID] - current pending ecc cnt is 1CT500MX500SSD1_1902E1E1F6BF (sdg)warning 29-10-2024 20:31Unraid Cache disk SMART health [197]Warning [UNRAID] - current pending ecc cnt is 1CT500MX500SSD1_1902E1E1F6BF (sdg)warning However, when I run a SMART Self-Test for both drives, no error shows up. I am also attaching the two SMART logs for these drives if it can help. 2. I'm not really sure what to do next : With such a high error count which seems to be localized in a very specific area of one drive (from my limited understanding, I might be wrong here), I'm not sure how to determine if actual data is compromised, or if only the parity is at fault, and if checking "Write corrections to parity" on the next parity check will fix the issue, once the culprit has been identified. I'd be much grateful for any help that you could provide for these 2 points above. As for my setup, feel free to shame me, I can take a few punches, I'd be more than happy for your suggestions on how to improve the setup to make it more reliable overtime. I'll probably end up putting everything in a Server Tower eventually, I'm just not there yet money-wise. But FYI, as I stated before, it's a HP ZBook 15 with 16 GB of RAM, a 512GB SSD which serves as cache and might be problematic, and an array of 5 drives : 3 external USB Drives, and 2 ST16000NE000-2RW103_ZL2JK4WH drives on a UGREEN HDD Docking Station SATA to USB 3.0 Adapter for 2.5 3.5 SSD or HDD drives. I know, you can laugh or cry, but it's what I have ATM. Please don't hate But I'll take any advice you may have. Thanks in advance for your kind help! unraid-diagnostics-20241031-1913.zip unraid-smart-20241101-1322.zip unraid-smart-20241101-1325.zip