October 5, 20214 yr Hello, I have changed my unraid system from a tower case to a 19'' server case. Mainborad, disks and controller stayed the same. Power supply is different and the Chenbro RM23612 has a backplane. After the conversion everything seemed to run fine, but after a short time the system reported a lot of read errors and kicked one data disk and one of the two parity disks out of the array. Then I installed a new 8TB disk as a data disk replacement and started the resync process. After about 2-3% there were thousands of read errors on other disks and the sync process stopped. I can do what I want, I can't get the array reconstructed. I then mounted all the data disks individually and backed up the data to two drives (unassiged). This worked without any problems. Without error messages. What else I tried: 1. "xfs_repair" on all disks. 2. change the SFF-8087 to SFF-8087 cable 3. selected several "replacement disks" for the failed data disk 4. cursed God and the world 5. was happy about the unraid concept (saved data) I have attached the diagnostic files. Does anyone have any ideas? Br Georg nas.fritz.box-diagnostics-20211005-1532.zip Edited October 17, 20214 yr by Toskache
October 5, 20214 yr Community Expert If backplane and PSU are the only things that changed that's where you should begin, try with a different PSU first, if issues persist it's likely the backplane.
October 6, 20214 yr Author @JorgeB Yes. I now have a "flying" setup with an external power supply and I have the disks connected without the backplane. So far about 65% of the rebuild is done - without errors. Remaining problem causes: PSU Backplane (electronics) Backplane (mechanics (SATA connectors)) Incompatibility between backplane and LSI SAS2308 Does the community's wealth of experience here have a favorite?
October 6, 20214 yr How was the backplane powered ? Is there a difference with your current temporary setup ? For exemple, how many leads from the PSU, splitters, Molex vs SATA, ...
October 6, 20214 yr Author 1 hour ago, ChatNoir said: How was the backplane powered ? Is there a difference with your current temporary setup ? For exemple, how many leads from the PSU, splitters, Molex vs SATA, ... In the current, temporary setup I do not use the backplane. In normal operation, the backplane is powered with 4 Molex connectors (direct from PSU, no splitter).
October 17, 20214 yr Author I switched to another case with a new backplane. Works now fine for a while. THX.
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