November 25, 201510 yr I got a Toshiba X300 6 TB from Amazon Warehousedeals. I gonna run 3 preclear cycles on it. How long is this gonna take using bjp's version of the preclear script? How long does preread phase take. This is on my main server.
November 27, 201510 yr Looks like 83 hours based on this for my HGST 6TB NAS drive below: =======================================================================1.15b == invoked as: ./preclear.sh -f -c 3 /dev/sda == HGSTHDN726060ALE610 == Disk /dev/sda has been successfully precleared == with a starting sector of 1 == Ran 3 cycles == == Using :Read block size = 8388608 Bytes == Last Cycle's Pre Read Time : 10:41:15 (155 MB/s) == Last Cycle's Zeroing time : 12:09:00 (137 MB/s) == Last Cycle's Post Read Time : 12:00:14 (138 MB/s) == Last Cycle's Total Time : 24:10:14 == == Total Elapsed Time 83:10:10 == == Disk Start Temperature: 30C == == Current Disk Temperature: 26C, == ============================================================================ ** Changed attributes in files: /tmp/smart_start_sda /tmp/smart_finish_sda ATTRIBUTE NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS RAW_VALUE Seek_Time_Performance = 128 100 20 ok 18 Temperature_Celsius = 230 200 0 ok 26 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. ============================================================================
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