parazit Posted November 4, 2021 Share Posted November 4, 2021 (edited) Hello guys! I have just purchased a new WD Red Pro 6TB and i am seeing a lot of "blk_update_request: critical medium error" in the pre-clear log. The disk is connected through a USB Adapter instead of SATA at the moment, because all SATA ports are in use. Is that a normal behavior? Edited November 8, 2021 by parazit Quote Link to comment
itimpi Posted November 4, 2021 Share Posted November 4, 2021 No - sounds like a faulty disk. You could try running an extended SMART test to confirm. Quote Link to comment
parazit Posted November 5, 2021 Author Share Posted November 5, 2021 I have did the extended SMART test and the test was good. After that i ran the pre clear script and everything was fine except of the post read verification. Is that something that i have to worry about? Also the medium error in the Disk Information Log is still present, but thats kinda weird to me because i have those errors with a disk that failed and which i already replaced. Any ideas? Logs are attached. Log.rtf preclear_disk_V9G95D3R_25071.txt Quote Link to comment
trurl Posted November 5, 2021 Share Posted November 5, 2021 7 minutes ago, parazit said: post read verification Have you done memtest? Quote Link to comment
itimpi Posted November 5, 2021 Share Posted November 5, 2021 1 hour ago, parazit said: After that i ran the pre clear script and everything was fine except of the post read verification. Yes - this means that UnRaid cannot read successfully the data that has just been written. Quote Link to comment
parazit Posted November 6, 2021 Author Share Posted November 6, 2021 @trurl thank you for your answer. Could you be so kind an tell me how to run a memtest? I made several searches but didn't find a solution how to run a memtest. @itimpi thank you also for your answer. Is it possible to only run a post read instead of performing a complete pre clear? I just want to make sure the disk is fine, so i can investigate where the error is coming from. Quote Link to comment
itimpi Posted November 6, 2021 Share Posted November 6, 2021 10 hours ago, parazit said: Could you be so kind an tell me how to run a memtest? I made several searches but didn't find a solution how to run a memtest. It is one of the options on the Unraid boot menu. Having said that if you boot in UEFI mode then y/u need to download a UEFI compatible version from the memtert86 site. 10 hours ago, parazit said: Is it possible to only run a post read instead of performing a complete pre clear? I just want to make sure the disk is fine, so i can investigate where the error is coming fro It is a long time since I ran a pre-clear I think that you are forced to run the write phase but have options to skip the pre-read and/or post-read. Quote Link to comment
parazit Posted November 6, 2021 Author Share Posted November 6, 2021 thanks for your instruction. I ran a memtest and everything was fine without any errors. Just started the pre-clear once again and the log doesn't show any errors so far. Hope it will stay like this Quote Link to comment
parazit Posted November 8, 2021 Author Share Posted November 8, 2021 Unfortunately i still had errors during the post-read. Zeroing the disk was fine. "4168 sectors are pending re-allocation..." does that mean i should RMA the disk eventhough the SMART Test was good? WDC_WD6003FFBX-68MU3N0_V9G95D3R-20211108-1309 (sdh).txt Quote Link to comment
JonathanM Posted November 8, 2021 Share Posted November 8, 2021 7 minutes ago, parazit said: does that mean i should RMA the disk eventhough the SMART Test was good? I'd run a long smart test again, followed by another preclear cycle. Is there any possible way to connect directly instead of USB? Quote Link to comment
parazit Posted November 8, 2021 Author Share Posted November 8, 2021 (edited) I will run another long smart to see the result. All SATA-Ports are occupied but i can disconnect one of the data drives, run the tests on the new HDD and reconnect the drive again. That should normally work right? EDIT: Just connected the HDD directly and ran the extended SMART test. Unfortunately the test failed. I am going to RMA the disk. Thank you everybody who tried to help me in this case Edited November 8, 2021 by parazit Quote Link to comment
itimpi Posted November 8, 2021 Share Posted November 8, 2021 48 minutes ago, parazit said: "4168 sectors are pending re-allocation... On a new disk I would expect this value to be 0. Even on an old disk a number this large would be a cause for concern. Quote Link to comment
parazit Posted November 8, 2021 Author Share Posted November 8, 2021 Yes this value is 0 on all my disks thats why i don't even want to invest more to time for any other test. The result clearly shows that there is something wrong with the disk eventhough it's brand new. Quote Link to comment
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