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Preclear Questions

Blade
in Hardware

Featured Replies

Should I run preclear on every new disk before I put it in the system?

 

I just got my UNRAID server up and running and I only have the parity drive in it right now. The parity drive is a brand new 1TB WD green drive.

 

Should I run preclear on it?

  • Quote

    To be able to run the preclear script on a disk it can't be assigned to the array.

     

    But to answer your question yes I would run the preclear script on the parity drive.  there is no use as far as setting up the drive to add to the array but the preclear script will stress the drive and make sure it is up to par and ready to be used as your parity drive.

  • Quote
    • Author

    Great.

    Pre-clear is running on it right now.

    I guess I will see how it goes.

     

  • Quote
    • Author

    Here was the pre-clear results from syslog. Will this drive be ok?

     

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: smartctl version 5.38 [i486-slackware-linux-gnu] Copyright © 2002-8 Bruce Allen

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Home page is http://smartmontools.sourceforge.net/

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]:

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: === START OF INFORMATION SECTION ===

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Device Model: WDC WD10EADS-00M2B0

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Serial Number: WD-WMAV50195436

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Firmware Version: 01.00A01

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: User Capacity: 1,000,203,804,160 bytes

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Device is: Not in smartctl database [for details use: -P showall]

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ATA Version is: 8

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ATA Standard is: Exact ATA specification draft version not indicated

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Local Time is: Wed Aug 26 04:59:06 2009 GMT+4

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: SMART support is: Available - device has SMART capability.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: SMART support is: Enabled

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]:

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: === START OF READ SMART DATA SECTION ===

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: SMART overall-health self-assessment test result: PASSED

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]:

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: General SMART Values:

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Offline data collection status: (0x84)^IOffline data collection activity

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^Iwas suspended by an interrupting command from host.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^IAuto Offline Data Collection: Enabled.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Self-test execution status: ( 0)^IThe previous self-test routine completed

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^Iwithout error or no self-test has ever

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^Ibeen run.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Total time to complete Offline

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: data collection: ^I^I (19980) seconds.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Offline data collection

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: capabilities: ^I^I^I (0x7b) SMART execute Offline immediate.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^IAuto Offline data collection on/off support.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^ISuspend Offline collection upon new

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^Icommand.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^IOffline surface scan supported.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^ISelf-test supported.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^IConveyance Self-test supported.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^ISelective Self-test supported.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: SMART capabilities: (0x0003)^ISaves SMART data before entering

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^Ipower-saving mode.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^ISupports SMART auto save timer.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Error logging capability: (0x01)^IError logging supported.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^IGeneral Purpose Logging supported.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Short self-test routine

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: recommended polling time: ^I ( 2) minutes.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Extended self-test routine

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: recommended polling time: ^I ( 230) minutes.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Conveyance self-test routine

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: recommended polling time: ^I ( 5) minutes.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: SCT capabilities: ^I (0x303f)^ISCT Status supported.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^ISCT Feature Control supported.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ^I^I^I^I^ISCT Data Table supported.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]:

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: SMART Attributes Data Structure revision number: 16

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Vendor Specific SMART Attributes with Thresholds:

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 3 Spin_Up_Time 0x0027 113 113 021 Pre-fail Always - 7308

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 18

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 15

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 14

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 5

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 156

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]:

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: SMART Error Log Version: 1

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: No Errors Logged

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]:

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: SMART Self-test log structure revision number 1

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: No self-tests have been logged. [To run self-tests, use: smartctl -t]

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]:

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]:

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: SMART Selective self-test log data structure revision number 1

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 1 0 0 Not_testing

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 2 0 0 Not_testing

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 3 0 0 Not_testing

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 4 0 0 Not_testing

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: 5 0 0 Not_testing

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: Selective self-test flags (0x0):

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: After scanning selected spans, do NOT read-scan remainder of disk.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]: If Selective self-test is pending on power-up, resume after 0 minute delay.

    Aug 26 04:59:06 Tower preclear_disk-finish[22859]:

     

  • Quote
    • Author

    Anyone know if this is ok. It looks ok, but I want to be sure because it will be my parity drive.

    What is the thing I need to look at in the pre-clear results to determine if there were issues with the drive?

     

  • Quote

    Anyone know if this is ok. It looks ok, but I want to be sure because it will be my parity drive.

    What is the thing I need to look at in the pre-clear results to determine if there were issues with the drive?

     

     

    See the preclear results thread in the Customization section of the forum; you will probably get more answers there.

  • Quote

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