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Seagate Backup Plus 8TB Desktop External Hard Drive with 200GB of Cloud Storage


outdooritguy

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Just harvested and attempted to use a 5TB external portable like this one. I ran into some seriously bizarre issues clearing the drive. Performance started out at 150mb/s but within an hour was down to 30mb/s and it never rose. I did some research and found a few postings about this same thing https://lime-technology.com/forum/index.php?topic=34052.0

 

It seems that the 5TB may be shingled drives, I feel pretty certain the 8TB drives are. When I tried to abort the clearing process my system hung badly, it's currently undergoing a parity check and I've packed up the drive to send back. Not comfortable using one of these as a Parity drive and wish I could've tested it more but I'm not willing to risk data over it. Supposedly the portable drives have aggressive head parking and sleep cycling in the firmware and may not be too great for our usage patterns. Food for thought if you're considering one at least...

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Turns out these are quite easy to harvest, compared to the older version of this drive - this one is blue and i was able to do it with a flat head screw driver and a few quarters.  - No apparent damage to enclosure and no serial number on enclosure, so it would be pretty easy to keep it and return the enclosure in the event the drive failed. - I did 1 preclear successfully.  Here are the results - seems some of the numbers are high, but i dont really know that much regarding smart values

I will preclear another as well as this one again... Also i had problems with clearing the 5tb which i harvested from seagate backup plus a year or so ago, so i never used them in an enclosure.

 

I bought 5 of them during amazon's sale, would love to hear other's experiences with the harvested 8tb's.  What i have read here is that the drives purchased as 8tb internals are working fine.

 

 

update - i have asked these questions here, and gotten some good answers if anyone else stumbles on this - http://lime-technology.com/forum/index.php?topic=39526.0

 

 

- ================================================================== 1.15b

=                unRAID server Pre-Clear disk /dev/sdv

=              cycle 1 of 1, partition start on sector 1

= Disk Pre-Clear-Read completed                                DONE

= Step 1 of 10 - Copying zeros to first 2048k bytes            DONE

= Step 2 of 10 - Copying zeros to remainder of disk to clear it DONE

= Step 3 of 10 - Disk is now cleared from MBR onward.          DONE

= Step 4 of 10 - Clearing MBR bytes for partition 2,3 & 4      DONE

= Step 5 of 10 - Clearing MBR code area                        DONE

= Step 6 of 10 - Setting MBR signature bytes                    DONE

= Step 7 of 10 - Setting partition 1 to precleared state        DONE

= Step 8 of 10 - Notifying kernel we changed the partitioning  DONE

= Step 9 of 10 - Creating the /dev/disk/by* entries            DONE

= Step 10 of 10 - Verifying if the MBR is cleared.              DONE

= Disk Post-Clear-Read completed                                DONE

Disk Temperature: 26C, Elapsed Time:  59:01:20

========================================================================1.15b

== ST8000AS0002-1NA17Z  Z8408NKD

== Disk /dev/sdv has been successfully precleared

== with a starting sector of 1

============================================================================

** Changed attributes in files: /tmp/smart_start_sdv  /tmp/smart_finish_sdv

                ATTRIBUTE  NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS      RAW_VALUE

      Raw_Read_Error_Rate =  117    103            6        ok          149191024

          Seek_Error_Rate =    72    100          30        ok          16611905

        Spin_Retry_Count =  100    100          97        near_thresh 0

        End-to-End_Error =  100    100          99        near_thresh 0

  Airflow_Temperature_Cel =    74      77          45        ok          26

      Temperature_Celsius =    26      23            0        ok          26

  Hardware_ECC_Recovered =  117    103            0        ok          149191024

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.

 

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