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Hitachi HDS722020ALA330 2TB Fry's special Aug 7 04:48:04 Tower preclear_disk-diff[15359]: ============================================================================ Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Disk /dev/sdc has been successfully precleared Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Ran 1 preclear-disk cycle Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Using :Read block size = 8225280 Bytes Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Last Cycle's Pre Read Time : 6:29:41 (85 MB/s) Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Last Cycle's Zeroing time : 12:51:24 (43 MB/s) Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Last Cycle's Post Read Time : 12:57:48 (42 MB/s) Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Last Cycle's Total Time : 32:20:09 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Total Elapsed Time 32:20:09 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Disk Start Temperature: 33C Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Current Disk Temperature: 34C, Aug 7 04:48:04 Tower preclear_disk-diff[15359]: == Aug 7 04:48:04 Tower preclear_disk-diff[15359]: ============================================================================ Aug 7 04:48:04 Tower preclear_disk-diff[15359]: S.M.A.R.T. error count differences detected after pre-clear Aug 7 04:48:04 Tower preclear_disk-diff[15359]: note, some 'raw' values may change, but not be an indication of a problem Aug 7 04:48:04 Tower preclear_disk-diff[15359]: 19,20c19,20 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: < Offline data collection status: (0x80)^IOffline data collection activity Aug 7 04:48:04 Tower preclear_disk-diff[15359]: < ^I^I^I^I^Iwas never started. Aug 7 04:48:04 Tower preclear_disk-diff[15359]: --- Aug 7 04:48:04 Tower preclear_disk-diff[15359]: > Offline data collection status: (0x82)^IOffline data collection activity Aug 7 04:48:04 Tower preclear_disk-diff[15359]: > ^I^I^I^I^Iwas completed without error. Aug 7 04:48:04 Tower preclear_disk-diff[15359]: 53c53 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: < 2 Throughput_Performance 0x0005 100 100 054 Pre-fail Offline - 0 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: --- Aug 7 04:48:04 Tower preclear_disk-diff[15359]: > 2 Throughput_Performance 0x0005 131 131 054 Pre-fail Offline - 108 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: 58c58 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: < 8 Seek_Time_Performance 0x0005 100 100 020 Pre-fail Offline - 0 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: --- Aug 7 04:48:04 Tower preclear_disk-diff[15359]: > 8 Seek_Time_Performance 0x0005 119 119 020 Pre-fail Offline - 36 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: 61,62c61,62 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: < 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 3 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: < 193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 3 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: --- Aug 7 04:48:04 Tower preclear_disk-diff[15359]: > 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 4 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: > 193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 4 Aug 7 04:48:04 Tower preclear_disk-diff[15359]: ============================================================================

Thanks for your reply. I was focusing on the high fly writes. I thought these were serious errors. I also thought that since the value was 001 and the threshold was 000 that I was close to running out of "allowed" high fly writes.

Hi everyone. I replaced my parity drive with new one then ran preclear on my old parity drive. Here is the differences at the start and end of preclear: === START OF INFORMATION SECTION === Model Family: Seagate Barracuda 7200.11 Device Model: ST3750330AS Firmware Version: SD15 User Capacity: 750,156,374,016 bytes Device is: In smartctl database [for details use: -P show] ATA Version is: 8 ATA Standard is: ATA-8-ACS revision 4 Local Time is: Tue Aug 4 05:02:36 2009 EDT SMART support is: Available - device has SMART capability. SMART support is: Enabled SMART Attributes Data Structure revision number: 10 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000f 115 099 006 Pre-fail Always - 87686600 ================== 1 Raw_Read_Error_Rate 0x000f 111 099 006 Pre-fail Always - 36177112 7 Seek_Error_Rate 0x000f 072 060 030 Pre-fail Always - 16010428 ================== 7 Seek_Error_Rate 0x000f 072 060 030 Pre-fail Always - 4311566057 189 High_Fly_Writes 0x003a 006 006 000 Old_age Always - 94 ================== 189 High_Fly_Writes 0x003a 001 001 000 Old_age Always - 120 190 Airflow_Temperature_Cel 0x0022 069 047 045 Old_age Always - 31 (Lifetime Min/Max 26/33) ================== 190 Airflow_Temperature_Cel 0x0022 067 047 045 Old_age Always - 33 (Lifetime Min/Max 26/34) 195 Hardware_ECC_Recovered 0x001a 038 032 000 Old_age Always - 87686600 ================== 195 Hardware_ECC_Recovered 0x001a 060 032 000 Old_age Always - 36177112 Looking at the results I think it is time to send this drive back. Any thoughts on this readout are appreciated! For what it is worth my new Hitachi Deskstar made it through 1 preclear pass with no changes. === START OF INFORMATION SECTION === Device Model: Hitachi HDT721010SLA360 Serial Number: STN604MR3X2THP Firmware Version: ST6OA3AA User Capacity: 1,000,204,886,016 bytes Device is: Not in smartctl database [for details use: -P showall] ATA Version is: 8 ATA Standard is: ATA-8-ACS revision 4 Local Time is: Mon Aug 3 02:16:10 2009 EDT SMART support is: Available - device has SMART capability. SMART support is: Enabled SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0 2 Throughput_Performance 0x0005 100 100 054 Pre-fail Offline - 0 3 Spin_Up_Time 0x0007 100 100 024 Pre-fail Always - 0 4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 4 5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0 7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0 8 Seek_Time_Performance 0x0005 100 100 020 Pre-fail Offline - 0 9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 9 10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 4 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 4 193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 4 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0 197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0