I have a red with it set to non-zero. The red's do seem to not as easily reallocate sectors as some other drivers I have had. Device Model: WDC WD30EFRX-68EUZN0 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 940 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 9 9 Power_On_Hours 0x0032 079 079 000 Old_age Always - 16032 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 15 196 Reallocated_Event_Count 0x0032 196 196 000 Old_age Always - 4 # 1 Extended offline Completed without error 00% 16010 -