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unraid 6.11.5 interpreting preclear failure log

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new to unraid.  testing out parity drive for server and it failed in the preread stage. i t said to check the log for more details and it did but doesn't seem to indicate what the failure actually was.  can anyone help me interpret this.  someone on another forum suggested i should rerun with a different sata cable but was hoping to figure out what went wrong.  the drive is brand new and can be returned easily i just want to be fairly sure it actualliy is the drive.

 

Mar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 5353465+0 records outMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 11227029831680 bytes (11 TB, 10 TiB) copied, 58447.6 s, 192 MB/sMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 5354224+0 records inMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 5354223+0 records outMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 11228619472896 bytes (11 TB, 10 TiB) copied, 58460 s, 192 MB/sMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 5354967+0 records inMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 5354966+0 records outMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 11230177656832 bytes (11 TB, 10 TiB) copied, 58472.4 s, 192 MB/sMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 5355721+0 records inMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 5355720+0 records outMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 11231758909440 bytes (11 TB, 10 TiB) copied, 58484.9 s, 192 MB/sMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 5356470+0 records inMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 5356469+0 records outMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 11233329676288 bytes (11 TB, 10 TiB) copied, 58497.3 s, 192 MB/sMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 5356487+0 records inMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 5356487+0 records outMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-Read: dd output: 11233367425024 bytes (11 TB, 10 TiB) copied, 58497.6 s, 192 MB/sMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: Pre-read: pre-read verification failed!Mar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: S.M.A.R.T.: Error:Mar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: S.M.A.R.T.:Mar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: S.M.A.R.T.: ATTRIBUTE               INITIAL NOW STATUSMar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: S.M.A.R.T.: Reallocated_Sector_Ct   0       0   -Mar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: S.M.A.R.T.: Power_On_Hours          7       23  Up 16Mar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: S.M.A.R.T.: Reported_Uncorrect      0       0   -Mar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: S.M.A.R.T.: Airflow_Temperature_Cel 31      33  Up 2Mar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: S.M.A.R.T.: Current_Pending_Sector  0       0   -Mar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: S.M.A.R.T.: Offline_Uncorrectable   0       0   -Mar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: S.M.A.R.T.: UDMA_CRC_Error_Count    0       0   -Mar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: S.M.A.R.T.: Mar 11 08:24:13 preclear_disk_ZR5CLZVV_14183: error encountered, exiting ...

  • Community Expert

Run memtest, bad RAM can cause that error.

  • Author

this server was just built.  i did run mprime blend for 24 hours and this is ddr5 ecc memory.  24 hours of that test showed no correctable errors on the ram even.  i don't see how to view ecc errors in unraid yet if you know how to check that i would love to know as well.  Is memory still likely to be the issue given it recently went through a mprime test that does push the memory as well as the cpu without issue?  i have 2 other drives that will finish preclear within a few hours and i can run memtest then though.  do i use the one that is bundled with unraid or should i download passmarks?

  • Community Expert

If the other drives pass preclear run it on that one again.

  • Author

those drives finished fine and with a 3rd small one i cleared as well for this.  ran this a second time in a jbod i attached to the server rather than internal to the mobo on a sata port.  it failed within an hour of starting the post read.  am starting the rma process. but have also started running memtest from passmark about 4 hours in now and will let it run till after work tomorrow but my gut says the ram is fine

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