Erroneous smart output from older RE16 SATA Caviar


#1

I have an older WD Caviar RE16 160GB (model WD1600YD).

It was failing a DLG read test due to bad sectors. I decided to try writing zeroes to the drive as it contained no valuable information. After running the write zeros test from DLG, the drive *seems* to  have no more bad sectors, however its smart output is erroneous.

Here’s the report from Linux smartctl.

Bear in mind that before running the Write Zeroes test, the SMARt output included all the attributes as expected.

smartctl 5.40 2010-02-03 r3060 [i686-pc-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Model Family: Western Digital RE Serial ATA family
Device Model: WDC WD1600YD-01NVB1
Serial Number: WD-WCANM4246351
Firmware Version: 10.02E01
User Capacity: 164,696,555,520 bytes
Device is: In smartctl database [for details use: -P show]
ATA Version is: 7
ATA Standard is: Exact ATA specification draft version not indicated
Local Time is: Tue Jan 4 04:57:38 2011 CET
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

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: (5580) seconds.
Offline data collection
capabilities: (0x33) SMART execute Offline immediate.
                                        Auto Offline data collection on/off support.
                                        Suspend Offline collection upon new
                                        command.
                                        No Offline surface scan supported.
                                        Self-test supported.
                                        Conveyance Self-test supported.
                                        No Selective Self-test supported.
SMART capabilities: (0x0000) Automatic saving of SMART data is not implemented.
Error logging capability: (0x00) Error logging supported.
                                        General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 67) minutes.
Conveyance self-test routine
recommended polling time: ( 6) minutes.
SCT capabilities: (0x103f) SCT Status supported.
                                        SCT Feature Control supported.
                                        SCT Data Table supported.

SMART Attributes Data Structure revision number: 0
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
 56 Unknown_Attribute 0x0028 200 000 --- Old_age Offline - 194446054391824
 56 Unknown_Attribute <== Data Page | WARNING: PREVIOUS ATTRIBUTE HAS TWO
197 Current_Pending_Sector <== Threshold Page | INCONSISTENT IDENTITIES IN THE DATA
114 Unknown_Attribute 0x0028 091 000 --- Old_age Offline - 214748371864
114 Unknown_Attribute <== Data Page | WARNING: PREVIOUS ATTRIBUTE HAS TWO
198 Offline_Uncorrectable <== Threshold Page | INCONSISTENT IDENTITIES IN THE DATA

SMART Error Log Version: 1
ATA Error Count: 1648 (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 1648 occurred at disk power-on lifetime: 7063 hours (294 days + 7 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 dd dd 40 e0 Error: UNC at LBA = 0x0040dddd = 4251101

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
  -- -- -- -- -- -- -- -- ---------------- --------------------
  c8 00 80 70 dd 40 00 00 00:24:18.670 READ DMA
  c8 00 80 f0 dc 40 00 00 00:24:18.669 READ DMA
  c8 00 80 70 dc 40 00 00 00:24:18.667 READ DMA
  c8 00 80 f0 db 40 00 00 00:24:18.667 READ DMA
  c8 00 80 70 db 40 00 00 00:24:18.666 READ DMA

Error 1647 occurred at disk power-on lifetime: 7063 hours (294 days + 7 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 5d ce 40 e0 Error: UNC at LBA = 0x0040ce5d = 4247133

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
  -- -- -- -- -- -- -- -- ---------------- --------------------
  c8 00 80 00 ce 40 00 00 00:24:15.399 READ DMA
  ec 00 00 00 00 00 00 00 00:24:15.393 IDENTIFY DEVICE
  ef 03 46 00 00 00 00 00 00:24:15.393 SET FEATURES [Set transfer mode]
  ec 00 00 00 00 00 00 00 00:24:15.387 IDENTIFY DEVICE
  c8 00 80 00 ce 40 00 00 00:24:13.534 READ DMA

Error 1646 occurred at disk power-on lifetime: 7063 hours (294 days + 7 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 5d ce 40 e0 Error: UNC at LBA = 0x0040ce5d = 4247133

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
  -- -- -- -- -- -- -- -- ---------------- --------------------
  c8 00 80 00 ce 40 00 00 00:24:13.534 READ DMA
  ec 00 00 00 00 00 00 00 00:24:13.528 IDENTIFY DEVICE
  ef 03 46 00 00 00 00 00 00:24:13.528 SET FEATURES [Set transfer mode]
  ec 00 00 00 00 00 00 00 00:24:13.524 IDENTIFY DEVICE
  c8 00 80 00 ce 40 00 00 00:24:11.623 READ DMA

Error 1645 occurred at disk power-on lifetime: 7063 hours (294 days + 7 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 5d ce 40 e0 Error: UNC at LBA = 0x0040ce5d = 4247133

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
  -- -- -- -- -- -- -- -- ---------------- --------------------
  c8 00 80 00 ce 40 00 00 00:24:11.623 READ DMA
  ec 00 00 00 00 00 00 00 00:24:11.617 IDENTIFY DEVICE
  ef 03 46 00 00 00 00 00 00:24:11.617 SET FEATURES [Set transfer mode]
  ec 00 00 00 00 00 00 00 00:24:11.610 IDENTIFY DEVICE
  c8 00 80 00 ce 40 00 00 00:24:09.748 READ DMA

Error 1644 occurred at disk power-on lifetime: 7063 hours (294 days + 7 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 5d ce 40 e0 Error: UNC at LBA = 0x0040ce5d = 4247133

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
  -- -- -- -- -- -- -- -- ---------------- --------------------
  c8 00 80 00 ce 40 00 00 00:24:09.748 READ DMA
  ec 00 00 00 00 00 00 00 00:24:09.742 IDENTIFY DEVICE
  ef 03 46 00 00 00 00 00 00:24:09.741 SET FEATURES [Set transfer mode]
  ec 00 00 00 00 00 00 00 00:24:09.737 IDENTIFY DEVICE
  c8 00 80 00 ce 40 00 00 00:24:07.787 READ DMA

SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Offline Completed without error 00% 292 -
# 2 Offline Completed without error 00% 292 -

Device does not support Selective Self Tests/Logging

Notice the strange output in the smart attributes section.

I’m thinking it may be safe to assume this disk is not safe? The badblocks scan in Linux also reports 0 errors now, as does the DLG extended test, however, that odd SMART output worries me.

Anyone know what would cause it?

FM


#2

Try another SMART utility. For example, HD Sentinel has a freeware Linux version.

http://www.hdsentinel.com/hdslin.php

You could also try reposting your question to the smartmontools support mailing list:
https://lists.sourceforge.net/lists/listinfo/smartmontools-support

The developers are always on hand to answer questions.