Octavius

Thanks!

Just finished preclearing a drive. Got the drive out of an old computer...is it OK/safe to use in my server??? Seems like some things are "near threshold". Thanks in advance! ========================================================================1.15 == invoked as: ./preclear_disk.sh /dev/sdb == ST3500413AS Z2A8GC0E == Disk /dev/sdb has been successfully precleared == with a starting sector of 64 == Ran 1 cycle == == Using :Read block size = 8388608 Bytes == Last Cycle's Pre Read Time : 1:27:09 (95 MB/s) == Last Cycle's Zeroing time : 1:17:55 (106 MB/s) == Last Cycle's Post Read Time : 3:05:32 (44 MB/s) == Last Cycle's Total Time : 5:51:37 == == Total Elapsed Time 5:51:37 == == Disk Start Temperature: 26C == == Current Disk Temperature: 30C, == ============================================================================ ** Changed attributes in files: /tmp/smart_start_sdb /tmp/smart_finish_sdb ATTRIBUTE NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS RAW_VALUE Raw_Read_Error_Rate = 117 114 6 ok 151669370 Spin_Retry_Count = 100 100 97 near_thresh 0 End-to-End_Error = 100 100 99 near_thresh 0 Airflow_Temperature_Cel = 70 74 45 near_thresh 30 Temperature_Celsius = 30 26 0 ok 30 Hardware_ECC_Recovered = 51 41 0 ok 151669370 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. ============================================================================

Welcome, and congrats on building your first server! If you are anything like the rest of us, it won't be your last Interpretting SMART reports can be somewhat involved, but Joe L. (the author of the preclear script) has created this nifty output report that makes it much easier. Each of your drives will have a report that looks like this: What this does is run a SMART report before the preclear cycle, then another one after the preclear cycle. It then subtracts the before values from the after values and shows you the difference (the bold numbers above). In this case, there were no differences, so the numbers are all zero. This is a good thing. Numbers greater than zero generally indicate some sort of mechanical problem with a drive, but they don't necessarily mean that the drive must be replaced immediately. You have to evaluate the numbers on a case-by-case basis. This is a topic that you'll learn about little bit at a time as you spend more time on these forums, don't try to digest it all at once. There are a lot of parameters involved in assessing a hard drive's health. In your case, all of your drives look perfectly healthy. Awesome. Thanks very much for the warm welcome and the interpretation of the smart report. I'll keep an eye out for any anomalies! Thanks again!

Hi all, With the help of many of your community's posts, I've just build my first unRAID server. I was looking for something to replace my inadequate DNS-323, and I really liked everything that unRAID had to offer. Thank you all so much for being so helpful to the users and for answering their questions. It has made it that much easier for me to make the plunge (especially since while I'm quite the Linux noobie). I've precleared to WDD HDD's twice, and both times on each drive it has said that the preclear was successful. I tried reading the output results but I couldn't really make heads or tails over much of what was in there. Can someone please look through my log and tell me: 1) What specifically I should be looking for in determining if someone is wrong with an HDD 2) Whether or not my HDDs are good to go Thanks in advance! Looking forward to getting more familiar with unRAID and in being a contributing member to the unRAID community! I just attached the 2nd half of the tests, let me know if the first half is needed. preclear_results_002.txt