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The Seagate Barracuda in my 2011 iMac started to have hard drive failures.
However, disk utility and system information report S.M.A.R.T. status: verified
I've retrieved detailed information using smartctl from https://www.smartmontools.org/:
smartctl 6.7 2018-08-20 r4761 [Darwin 15.6.0 x86_64] (daily-20180820)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Seagate Barracuda 7200.12
Device Model: ST31000528AS
Serial Number: 5VPAE0WQ
LU WWN Device Id: 5 000c50 044e5e5f4
Firmware Version: AP63
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Size: 512 bytes logical/physical
Rotation Rate: 7200 rpm
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 2.6, 3.0 Gb/s
Local Time is: Thu Aug 23 12:42:35 2018 CEST
==> WARNING: A firmware update for this drive may be available,
see the following Seagate web pages:
http://knowledge.seagate.com/articles/en_US/FAQ/207931en
http://knowledge.seagate.com/articles/en_US/FAQ/213891en
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
See vendor-specific Attribute list for marginal Attributes.
General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 600) seconds.
Offline data collection
capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 171) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x103f) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000e 083 077 006 Old_age Always - 70023408
3 Spin_Up_Time 0x0003 100 100 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 419
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 2
7 Seek_Error_Rate 0x000f 080 060 030 Pre-fail Always - 109788937
9 Power_On_Hours 0x0032 055 055 000 Old_age Always - 40043
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 394
184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0
187 Reported_Uncorrect 0x0032 001 001 000 Old_age Always - 3500
188 Command_Timeout 0x0032 100 099 000 Old_age Always - 4295032833
189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0022 053 042 045 Old_age Always In_the_past 47 (Min/Max 46/47 #3224)
194 Temperature_Celsius 0x0022 047 058 000 Old_age Always - 47 (0 13 0 0 0)
195 Hardware_ECC_Recovered 0x001a 042 015 000 Old_age Always - 70023408
197 Current_Pending_Sector 0x0012 098 097 000 Old_age Always - 109
198 Offline_Uncorrectable 0x0010 098 097 000 Old_age Offline - 109
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
SMART Error Log Version: 1
ATA Error Count: 3500 (device log contains only the most recent five errors)
CR = Command Register [HEX]
FR = Features Register [HEX]
SC = Sector Count Register [HEX]
SN = Sector Number Register [HEX]
CL = Cylinder Low Register [HEX]
CH = Cylinder High Register [HEX]
DH = Device/Head Register [HEX]
DC = Device Command Register [HEX]
ER = Error register [HEX]
ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.
Error 3500 occurred at disk power-on lifetime: 40041 hours (1668 days + 9 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 00 08 ff ff ff 4f 00 22:15:49.306 READ FPDMA QUEUED
27 00 00 00 00 00 e0 00 22:15:49.303 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
ec 00 00 00 00 00 a0 00 22:15:49.266 IDENTIFY DEVICE
ef 03 46 00 00 00 a0 00 22:15:49.265 SET FEATURES [Set transfer mode]
27 00 00 00 00 00 e0 00 22:15:49.265 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
Error 3499 occurred at disk power-on lifetime: 40041 hours (1668 days + 9 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 00 08 ff ff ff 4f 00 22:15:46.313 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 22:15:46.313 READ FPDMA QUEUED
27 00 00 00 00 00 e0 00 22:15:46.310 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
ec 00 00 00 00 00 a0 00 22:15:46.309 IDENTIFY DEVICE
ef 03 46 00 00 00 a0 00 22:15:46.309 SET FEATURES [Set transfer mode]
Error 3498 occurred at disk power-on lifetime: 40041 hours (1668 days + 9 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: WP at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
61 00 08 ff ff ff 4f 00 22:15:43.320 WRITE FPDMA QUEUED
60 00 08 ff ff ff 4f 00 22:15:43.317 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 22:15:43.317 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 22:15:43.317 READ FPDMA QUEUED
27 00 00 00 00 00 e0 00 22:15:43.314 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
Error 3497 occurred at disk power-on lifetime: 40041 hours (1668 days + 9 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 00 08 ff ff ff 4f 00 22:15:40.378 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 22:15:40.378 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 22:15:40.378 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 22:15:40.378 READ FPDMA QUEUED
27 00 00 00 00 00 e0 00 22:15:40.375 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
Error 3496 occurred at disk power-on lifetime: 40041 hours (1668 days + 9 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 00 08 ff ff ff 4f 00 22:15:37.423 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 22:15:37.423 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 22:15:37.422 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 22:15:37.422 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 22:15:37.422 READ FPDMA QUEUED
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.
This does not look very good: pending, uncorrectable sectors, logged errors.
Loading the output on Linux into GSmartControl:
So I'm wondering:
- I have a broken hard drive that results in read/write and file system failures
- S.M.A.R.T. attributes confirm that the drive is broken
Why does my iMac still report a verified S.M.A.R.T. status ?
gollum
Posted 2018-08-23T11:58:41.447
Reputation: 355
1I don't know exactly what if anything "verified" means, but can confirm that it doesn't mean the drive is OK. I've seen several clearly failing drives that showed "verified" status, including one that sounded disturbingly like a coffee grinder when running. – Gordon Davisson – 2018-08-24T17:19:17.543
I'm not sure, but "verified" may mean just that the data could be retrieved. Not verified would mean that the utility was unable to get the data. But just a guess. – fixer1234 – 2019-07-30T04:29:18.460