Just built my first unRAID box. Decided better safe than sorry. Here are my pre-clear results for my 2 WD 15EARs with jumpers installed.
HD1
: smartctl version 5.38 [i486-slackware-linux-gnu] Copyright (C) 2002-8 Bruce Allen
: Home page is http://smartmontools.sourceforge.net/
:
: === START OF INFORMATION SECTION ===
: Device Model: WDC WD15EARS-00Z5B1
: Serial Number: WD-WMAVU2866034
: Firmware Version: 80.00A80
: User Capacity: 1,500,301,910,016 bytes
: Device is: Not in smartctl database [for details use: -P showall]
: ATA Version is: 8
: ATA Standard is: Exact ATA specification draft version not indicated
: Local Time is: Mon Jul 26 22:33:11 2010 CDT
: SMART support is: Available - device has SMART capability.
: SMART support is: Enabled
:
: SMART Attributes Data Structure revision number: 16
: Vendor Specific SMART Attributes with Thresholds:
: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
: 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0
: 3 Spin_Up_Time 0x0027 190 189 021 Pre-fail Always - 5458
: 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 17
: 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
: 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
: 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 26
: 10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0
: 11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0
: 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 15
: 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 11
: 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 35
: 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
: 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
: 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0
: 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
: 200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0
:
: SMART Error Log Version: 1
: No Errors Logged
:
: SMART Self-test log structure revision number 1
: Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
: # 1 Short offline Completed without error 00% 0 -
:
: SMART Selective self-test log data structure revision number 1
: SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
: 1 0 0 Not_testing
: 2 0 0 Not_testing
: 3 0 0 Not_testing
: 4 0 0 Not_testing
: 5 0 0 Not_testing
: Selective self-test flags (0x0):
: After scanning selected spans, do NOT read-scan remainder of disk.
: If Selective self-test is pending on power-up, resume after 0 minute delay.
:
: ============================================================================
: ==
: == Disk /dev/sda has been successfully precleared
: ==
: == Ran 1 preclear-disk cycle
: ==
: == Using :Read block size = 8225280 Bytes
: == Last Cycle's Pre Read Time : 6:23:20 (65 MB/s)
: == Last Cycle's Zeroing time : 6:56:01 (60 MB/s)
: == Last Cycle's Post Read Time : 11:39:50 (35 MB/s)
: == Last Cycle's Total Time : 25:00:20
: ==
: == Total Elapsed Time 25:00:20
: ==
: == Disk Start Temperature: 28C
: ==
: == Current Disk Temperature: 34C,
: ==
: ============================================================================
: S.M.A.R.T. error count differences detected after pre-clear
: note, some 'raw' values may change, but not be an indication of a problem
: 19,20c19,20
: < Offline data collection status: (0x80)^IOffline data collection activity
: < ^I^I^I^I^Iwas never started.
: ---
: > Offline data collection status: (0x84)^IOffline data collection activity
: > ^I^I^I^I^Iwas suspended by an interrupting command from host.
: 54c54
: < 1 Raw_Read_Error_Rate 0x002f 100 253 051 Pre-fail Always - 0
: ---
: > 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0
: 58c58
: < 7 Seek_Error_Rate 0x002e 100 253 000 Old_age Always - 0
: ---
: > 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
: 63c63
: < 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 34
: ---
: > 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 35
: ============================================================================
:
HD2
: smartctl version 5.38 [i486-slackware-linux-gnu] Copyright (C) 2002-8 Bruce Allen
: Home page is http://smartmontools.sourceforge.net/
:
: === START OF INFORMATION SECTION ===
: Device Model: WDC WD15EARS-00Z5B1
: Serial Number: WD-WMAVU2807772
: Firmware Version: 80.00A80
: User Capacity: 1,500,301,910,016 bytes
: Device is: Not in smartctl database [for details use: -P showall]
: ATA Version is: 8
: ATA Standard is: Exact ATA specification draft version not indicated
: Local Time is: Mon Jul 26 22:45:02 2010 CDT
: SMART support is: Available - device has SMART capability.
: SMART support is: Enabled
:
: === START OF READ SMART DATA SECTION ===
: SMART overall-health self-assessment test result: PASSED
:
: SMART Attributes Data Structure revision number: 16
: Vendor Specific SMART Attributes with Thresholds:
: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
: 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0
: 3 Spin_Up_Time 0x0027 189 187 021 Pre-fail Always - 5550
: 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 17
: 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
: 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
: 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 26
: 10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0
: 11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0
: 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 15
: 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 11
: 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 41
: 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
: 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
: 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0
: 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
: 200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0
:
: SMART Error Log Version: 1
: No Errors Logged
:
: SMART Self-test log structure revision number 1
: No self-tests have been logged. [To run self-tests, use: smartctl -t]
:
:
: SMART Selective self-test log data structure revision number 1
: SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
: 1 0 0 Not_testing
: 2 0 0 Not_testing
: 3 0 0 Not_testing
: 4 0 0 Not_testing
: 5 0 0 Not_testing
: Selective self-test flags (0x0):
: After scanning selected spans, do NOT read-scan remainder of disk.
: If Selective self-test is pending on power-up, resume after 0 minute delay.
:
: ============================================================================
: ==
: == Disk /dev/sdb has been successfully precleared
: ==
: == Ran 1 preclear-disk cycle
: ==
: == Using :Read block size = 8225280 Bytes
: == Last Cycle's Pre Read Time : 6:25:07 (64 MB/s)
: == Last Cycle's Zeroing time : 6:56:40 (60 MB/s)
: == Last Cycle's Post Read Time : 11:47:39 (35 MB/s)
: == Last Cycle's Total Time : 25:10:33
: ==
: == Total Elapsed Time 25:10:33
: ==
: == Disk Start Temperature: 27C
: ==
: == Current Disk Temperature: 33C,
: ==
: ============================================================================
: S.M.A.R.T. error count differences detected after pre-clear
: note, some 'raw' values may change, but not be an indication of a problem
: 19,20c19,20
: < Offline data collection status: (0x80)^IOffline data collection activity
: < ^I^I^I^I^Iwas never started.
: ---
: > Offline data collection status: (0x84)^IOffline data collection activity
: > ^I^I^I^I^Iwas suspended by an interrupting command from host.
: 54c54
: < 1 Raw_Read_Error_Rate 0x002f 100 253 051 Pre-fail Always - 0
: ---
: > 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0
: 58c58
: < 7 Seek_Error_Rate 0x002e 100 253 000 Old_age Always - 0
: ---
: > 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
: 63c63
: < 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 40
: ---
: > 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 41
: ============================================================================
:
I think it all looks good (but I've been known to wrong). Please take a look and let me know.
Thanks.