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You say that post read is comparing values. So what is the defining factor in post read speed? CPU? If is is that would make sense since my MB (ASUS C60M1-I) has SATA3 controller but a weak CPU. It has to perform more operations on a post read so a slower CPU would perform slower than a faster one. But even increasing the processing speed can only do so much. So are my results and speed ok?

You say that post read is comparing values. So what is the defining factor in post read speed? CPU? If is is that would make sense since my MB (ASUS C60M1-I) has SATA3 controller but a weak CPU.

Is it normal for the post read speed to be 1/3 that of the pre read? This is the 2nd preclear of this drive. First time I was running 2 simultaneous preclears of two of the same drives. These results are from a single pass of a single preclear. Other users of the same drive are reporting preclear times of ~36h. Is this something I should be worried about ========================================================================1.13 == invoked as: ./preclear_disk.sh /dev/sda == WDC WD30EZRX-00MMMB0 WD-WMAWZ0333927 == Disk /dev/sda has been successfully precleared == with a starting sector of 1 == Ran 1 cycle == == Using :Read block size = 8225280 Bytes == Last Cycle's Pre Read Time : 9:20:54 (89 MB/s) == Last Cycle's Zeroing time : 8:27:11 (98 MB/s) == Last Cycle's Post Read Time : 27:30:18 (30 MB/s) == Last Cycle's Total Time : 45:19:25 == == Total Elapsed Time 45:19:25 == == Disk Start Temperature: 31C == == Current Disk Temperature: 30C, == ============================================================================ ** Changed attributes in files: /tmp/smart_start_sda /tmp/smart_finish_sda ATTRIBUTE NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS RAW_VALUE Temperature_Celsius = 122 121 0 ok 30 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 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, 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. ============================================================================