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reset disk status flag from failed to OK or Pred. failure

 
Occasional Advisor

reset disk status flag from failed to OK or Pred. failure

Just bad luck ... 2 failing disks in one raid5 array. The system reported 2 failed disks during a reboot. After a power cycle and "F2" we were able to get the array back online and the system started to rebuild 1 disk. I don't know how it selected that one, but during the rebuilding the second bad disk gave a ton of read errors and rebuilding stopped... 2 disk marked failed.

Is there a way to reset that failure flag on the disk and trigger the rebuilding of the 1st disk? Accepting some read errors/failures.

Windows server with smart array 420i controller

=> ctrl slot=0 ld 2 modify reenable forced

Error: This operation is not supported with the current configuration. Use the
       "show" command on devices to show additional details about the  configuration.
Reason: Array status not ok

=> ctrl slot=0 show config

Smart Array P420i in Slot 0 (Embedded)    (sn: xxxxxxxxxxxx)

   Internal Drive Cage at Port 1I, Box 2, OK

   Internal Drive Cage at Port 2I, Box 2, OK
   array A (SAS, Unused Space: 0  MB)

      logicaldrive 1 (279.4 GB, RAID 1, OK)

      physicaldrive 1I:2:1 (port 1I:box 2:bay 1, SAS, 300 GB, OK)
      physicaldrive 1I:2:2 (port 1I:box 2:bay 2, SAS, 300 GB, OK)

   array B (SAS, Unused Space: 0  MB)

      logicaldrive 2 (2.2 TB, RAID 5, Failed)

      physicaldrive 1I:2:3 (port 1I:box 2:bay 3, SAS, 600 GB, Failed) {failed first}
      physicaldrive 1I:2:4 (port 1I:box 2:bay 4, SAS, 600 GB, OK)
      physicaldrive 2I:2:5 (port 2I:box 2:bay 5, SAS, 600 GB, OK)
      physicaldrive 2I:2:6 (port 2I:box 2:bay 6, SAS, 600 GB, OK)
      physicaldrive 2I:2:7 (port 2I:box 2:bay 7, SAS, 600 GB, Failed) {failed after 20 min }
      physicaldrive 2I:2:8 (port 2I:box 2:bay 8, SAS, 600 GB, OK, spare)  {was rebuilding bay3}

   SEP (Vendor ID PMCSIERA, Model SRCv8x6G) 380 

I know it's an older box and it will be replaced, but I just like to know if I can reset/force that.

And when can I use this command ... seems just not to work as expected

ctrl slot=0 ld 2 modify reenable forced