January 30, 201412 yr So I opened up my unraid GUI the other day and I saw a red ball. Read through all the forums and proceeded to move data off the drive, removed it from the array and rebuilt parity per instructions. That all worked fine and my array is fully operational at the lower capacity. I set about investigating the drive in question. I ran a single preclear, followed by 3 additional preclears, all with the same result: ================================================================== 1.13 = unRAID server Pre-Clear disk /dev/sdl = cycle 3 of 3, partition start on sector 64 = = Step 1 of 10 - Copying zeros to first 2048k bytes DONE = Step 2 of 10 - Copying zeros to remainder of disk to clear it DONE = Step 3 of 10 - Disk is now cleared from MBR onward. DONE = Step 4 of 10 - Clearing MBR bytes for partition 2,3 & 4 DONE = Step 5 of 10 - Clearing MBR code area DONE = Step 6 of 10 - Setting MBR signature bytes DONE = Step 7 of 10 - Setting partition 1 to precleared state DONE = Step 8 of 10 - Notifying kernel we changed the partitioning DONE = Step 9 of 10 - Creating the /dev/disk/by* entries DONE = Step 10 of 10 - Verifying if the MBR is cleared. DONE = Disk Post-Clear-Read completed DONE Disk Temperature: 39C, Elapsed Time: 61:53:53 ========================================================================1.13 == Hitachi HDS722020ALA330 JK11H1B9GM9YKR == Disk /dev/sdl has been successfully precleared == with a starting sector of 64 ============================================================================ No SMART attributes are FAILING_NOW 0 sectors were pending re-allocation before the start of the preclear. 0 sectors were pending re-allocation after pre-read in cycle 1 of 3. 0 sectors were pending re-allocation after zero of disk in cycle 1 of 3. 0 sectors were pending re-allocation after post-read in cycle 1 of 3. 0 sectors were pending re-allocation after zero of disk in cycle 2 of 3. 0 sectors were pending re-allocation after post-read in cycle 2 of 3. 0 sectors were pending re-allocation after zero of disk in cycle 3 of 3. 0 sectors are pending re-allocation at the end of the preclear, the number of sectors pending re-allocation did not change. 0 sectors had been re-allocated before the start of the preclear. 0 sectors are re-allocated at the end of the preclear, the number of sectors re-allocated did not change. root@Tower:/boot# I've attached the SMART report from the drive. Any advice on whether I can use this drive again? I don't see any issues with it but wanted to check here since I know UnRaid will red ball a drive if it cannot write to it. Thanks, Brian smart.txt
January 30, 201412 yr Author Thanks! I think I'll keep it out of the array as a PreCleared spare until I have enough $ for another spare. Sucked having to move files around and shrink the array size. Lesson learned re: always having a spare drive at the ready. Would have much preferred to simply rebuild the red balled drive.
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