Point7

me too. They seem to always be re-written into place, so I'd suspect the power supply as an additional thing to check. (poor quality power might contribute to a poor quality write of the disk) In general, I'd not trust my data on it. Joe L. That's my second Samsung HD154UI in a few weeks time that is gone bad. The first Samsung drive gave read errors (bad sectors) when restoring a Windows Home Server backup. Luckily I could restore an 3 month old image from that drive (all the other images where bad). This drive does not pass the pre-clear test when I removed it from my WHS. Now I make backups of my backup images on the WHS.

Is it save to use following disk ? I'm worried about the re-allocation sectors. first run of pre-clear ========================================================================1.13 == invoked as: ./preclear_disk.sh -A /dev/sda == SAMSUNG HD154UI S1Y6J90SA57135 == Disk /dev/sda has been successfully precleared == with a starting sector of 64 == Ran 1 cycle == == Using :Read block size = 8225280 Bytes == Last Cycle's Pre Read Time : 5:33:51 (74 MB/s) == Last Cycle's Zeroing time : 5:39:43 (73 MB/s) == Last Cycle's Post Read Time : 10:30:29 (39 MB/s) == Last Cycle's Total Time : 21:45:02 == == Total Elapsed Time 21:45:02 == == Disk Start Temperature: 17C == == Current Disk Temperature: 13C, == ============================================================================ ** Changed attributes in files: /tmp/smart_start_sda /tmp/smart_finish_sda ATTRIBUTE NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS RAW_VALUE Airflow_Temperature_Cel = 87 83 0 ok 13 Temperature_Celsius = 87 84 0 ok 13 No SMART attributes are FAILING_NOW 13 sectors were pending re-allocation before the start of the preclear. 21 sectors were pending re-allocation after pre-read in cycle 1 of 1. 0 sectors were pending re-allocation after zero of disk in cycle 1 of 1. 2 sectors are pending re-allocation at the end of the preclear, a change of -11 in the number of sectors pending re-allocation. 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. ============================================================================ second run: ========================================================================1.13 == invoked as: ./preclear_disk.sh -A /dev/sda == SAMSUNG HD154UI S1Y6J90SA57135 == Disk /dev/sda has been successfully precleared == with a starting sector of 64 == Ran 1 cycle == == Using :Read block size = 8225280 Bytes == Last Cycle's Pre Read Time : 5:36:20 (74 MB/s) == Last Cycle's Zeroing time : 4:59:05 (83 MB/s) == Last Cycle's Post Read Time : 10:31:55 (39 MB/s) == Last Cycle's Total Time : 21:08:19 == == Total Elapsed Time 21:08:19 == == Disk Start Temperature: 14C == == Current Disk Temperature: 13C, == ============================================================================ ** Changed attributes in files: /tmp/smart_start_sda /tmp/smart_finish_sda ATTRIBUTE NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS RAW_VALUE Airflow_Temperature_Cel = 87 86 0 ok 13 No SMART attributes are FAILING_NOW 0 sectors were pending re-allocation before the start of the preclear. 16 sectors were pending re-allocation after pre-read in cycle 1 of 1. 0 sectors were pending re-allocation after zero of disk in cycle 1 of 1. 9 sectors are pending re-allocation at the end of the preclear, a change of 9 in the number of sectors pending re-allocation. 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. ============================================================================ 3th run: ========================================================================1.13 == invoked as: ./preclear_disk.sh -A /dev/sda == SAMSUNG HD154UI S1Y6J90SA57135 == Disk /dev/sda has been successfully precleared == with a starting sector of 64 == Ran 1 cycle == == Using :Read block size = 8225280 Bytes == Last Cycle's Pre Read Time : 14:07:24 (29 MB/s) == Last Cycle's Zeroing time : 5:21:18 (77 MB/s) == Last Cycle's Post Read Time : 11:04:59 (37 MB/s) == Last Cycle's Total Time : 30:34:41 == == Total Elapsed Time 30:34:41 == == Disk Start Temperature: 22C == == Current Disk Temperature: 13C, == ============================================================================ ** Changed attributes in files: /tmp/smart_start_sda /tmp/smart_finish_sda ATTRIBUTE NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS RAW_VALUE Raw_Read_Error_Rate = 99 99 51 In_the_past 16799 Airflow_Temperature_Cel = 87 78 0 ok 13 Temperature_Celsius = 87 79 0 ok 13 Current_Pending_Sector = 98 71 0 ok 67 No SMART attributes are FAILING_NOW 1198 sectors were pending re-allocation before the start of the preclear. 2306 sectors were pending re-allocation after pre-read in cycle 1 of 1. 0 sectors were pending re-allocation after zero of disk in cycle 1 of 1. 67 sectors are pending re-allocation at the end of the preclear, a change of -1131 in the number of sectors pending re-allocation. 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. ============================================================================ 4th run: ========================================================================1.13 == invoked as: ./preclear_disk.sh -A /dev/sda == SAMSUNG HD154UI S1Y6J90SA57135 == Disk /dev/sda has been successfully precleared == with a starting sector of 64 == Ran 1 cycle == == Using :Read block size = 8225280 Bytes == Last Cycle's Pre Read Time : 5:43:46 (72 MB/s) == Last Cycle's Zeroing time : 4:52:19 (85 MB/s) == Last Cycle's Post Read Time : 10:23:24 (40 MB/s) == Last Cycle's Total Time : 21:00:27 == == Total Elapsed Time 21:00:27 == == Disk Start Temperature: 11C == == Current Disk Temperature: 22C, == ============================================================================ ** Changed attributes in files: /tmp/smart_start_sda /tmp/smart_finish_sda ATTRIBUTE NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS RAW_VALUE Raw_Read_Error_Rate = 99 99 51 In_the_past 4433 Airflow_Temperature_Cel = 78 89 0 ok 22 Temperature_Celsius = 78 88 0 ok 22 Current_Pending_Sector = 100 98 0 ok 0 No SMART attributes are FAILING_NOW 67 sectors were pending re-allocation before the start of the preclear. 77 sectors were pending re-allocation after pre-read in cycle 1 of 1. 0 sectors were pending re-allocation after zero of disk in cycle 1 of 1. 0 sectors are pending re-allocation at the end of the preclear, a change of -67 in the number of sectors pending re-allocation. 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. ============================================================================