July 13, 20232 yr Hi. My configuration is 4 nos. HDD (1 Parity + 3 data) 2 TB each and one cache SSD of 240 GB. After starting the server array did not start as disk 2 & 3 were listed as missing and both could be seen as UD (with 4.14 GB size?). Went through missing disk threads on forum & got confused if I have to go for new config without loosing data. Then downloaded diagnostics & flash backup (time 1455). Upgraded OS from 6.10.9 to 6.12.2 latest and after reboot, disk 2 started showing as data disk & disk 3 is still UD. Now downloaded diagnostics (time 1306). Now array can be started & disk 3 I guess can be rebuilt. But I thought of seeking support first, what could be problem, how come disk 2 started showing automatically. There should be way to get back disk in array. It is not listed in dropdown of disk 3 slot. prashant-diagnostics-20230713-1455.zip prashant-diagnostics-20230713-1506.zip
July 13, 20232 yr Disk3 might be failing, it's not even giving a valid SMART report, but first replace cables and post new diags.
July 13, 20232 yr Author Noted. But please check disk 2 smart report in before upgrade diagnostic, it was same and without touching hardware it is perfect now. Is is something to do with pendrive?
July 13, 20232 yr Solution 14 minutes ago, Prashant said: it was same It was, so replacing cables might also fix the other one, you should also replace cables for disk2, if it happen once it might happen again.
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