superfans124

thanks, I'm setting up kiwi syslog server with your instructions, let's see... there were 300-ish errors during last parity check, though I have always enabled auto-correction to parity errors, not sure if any of these matters.

gotcha, thanks unryzend-diagnostics-20200324-1104.zip

oh, for whatever it's worth, the case is https://www.amazon.com/gp/product/B07KTCSWPP/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 drives are connected via a back panel, and I have another pci-e sata card, though the system has been stable for many months until now.

Hi, I was in the process of replacing/upgrading data disc (from 3TB to 12TB, my 1 parity drive is also 12TB). I've done this 3/4 times before, never had a problem, but now parity rebuild crashes around 2% mark, have already tried 3 times, crashed 3 times (lost connection, and forced to reboot, even took the case apart and blew the interior for dust). my PSU is Seasonic 80+gold 550W https://www.newegg.com/seasonic-focus-plus-550-gold-ssr-550fx-550w/p/N82E16817151189?Item=N82E16817151189 UPS monitor shows my PSU load during parity rebuild is 111W. My system did a scheduled parity check a week ago, I remember the process was "interrupted" (1st time for me since using Unraid for about 6 months now), but was able to resume, so took me 2 sessions to complete that scheduled parity check, but I didn't think too much about it and didn't think to syslog it (not that I know what to do with it anyways). attached is the latest syslog, one note-worthy line is: tsc: Fast TSC calibration failed any help would be much appreciated. SanDisk_Ultra_Fit_04014e0f09611353daac5735697dfc78bf564f546e637cf62b923c8e5a2b5f0d9cf700000000000000000000c07313f7ff1d1b18835581076c26c0d6-0-0-20200324-1104 flash (sda).txt

so I was following the Parity Swap procedure https://wiki.unraid.net/The_parity_swap_procedure doing my 1st parity swap, or that's what I thought I was doing... except in hindsight, I didn't have a old data drive to upgrade and swap out, I only wanted to upgrade my prior parity drive of 10TB to the new drive of 12TB, and put the old 10TB into data drive array. but I was following the "standard procedure": 2. instead of the old data drive, I unassigned my 10TB parity (clearly neither my brain nor my eyes were functioning properly). all else the same, until... 13. I assigned the new 12TB to parity, and assigned old parity drive of 10TB to data, but instead of getting as prescribed in the standard procedure, I got error message saying "you may not add new disk(s) and also remove existing disk(s)." (of course not because I messed up). I should've stopped at there, and came here for help, but I didn't... I thought, "I'll just assign the 12TB to parity, let Unraid rebuild the parity, then once that's done, I'll add the old 10TB into data array", that sounds pretty "logical and straight forward", to me... except it is not working. after 26 hours of parity-sync to rebuild the 12TB parity, everything was green. Then, I assigned the old 10TB into a data drive slot, the entire parity sync went kaput, again. I'm still getting the "you may not add new disk(s) and also remove existing disk(s)." message, and worse, the previous 26 hours spent on syncing parity gone wasted as it became invalid once more. I need help...thanks.