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Drive or ReadyNAS failure? I can't decipher alert...
I've had this ReadyNAS NV+ a long time, and this one has given me no trouble until now.
I'm receiving email alerts "Access to the disk on channel (??) is producing I/O errors. Although the array is still redundant, please replace this drive as soon as possible, as it is likely to fail soon." which I cannot decifer. I do not understand why it would not be able to tell me what disk is causing problems, if any disk is causing problems.
Searching here and on Google, I believe it is either an indication that at least 1 disk is failing (tolerable) or that the ReadyNAS itself is failing (unacceptable). Although the exact alert I've received has been described various times, I never found anyone who posted a resolution of the issue (except for 1 who replaced his Duo). I've included the SMART log from the ReadyNAS below.
The SMART status is "OK+" across the board, and the Health tab on the ReadyNAS shows no problems. The drives resynced as an array several weeks ago, but otherwise nothing has changed. The SMART status "windows" I can open up from the admin page show very similar (practically identical) values for all 4 drives, including "Hard disk resets - 486" on all 4 drives. Only drive 1 shows "Retries - 486" - the others are "0." These values are not included in the SMART log for some reason. That's the only thing that seems concerning to me, but I can't find a description of that value anywhere.
Any tips or suggestions?
Thanks!
I'm receiving email alerts "Access to the disk on channel (??) is producing I/O errors. Although the array is still redundant, please replace this drive as soon as possible, as it is likely to fail soon." which I cannot decifer. I do not understand why it would not be able to tell me what disk is causing problems, if any disk is causing problems.
Searching here and on Google, I believe it is either an indication that at least 1 disk is failing (tolerable) or that the ReadyNAS itself is failing (unacceptable). Although the exact alert I've received has been described various times, I never found anyone who posted a resolution of the issue (except for 1 who replaced his Duo). I've included the SMART log from the ReadyNAS below.
The SMART status is "OK+" across the board, and the Health tab on the ReadyNAS shows no problems. The drives resynced as an array several weeks ago, but otherwise nothing has changed. The SMART status "windows" I can open up from the admin page show very similar (practically identical) values for all 4 drives, including "Hard disk resets - 486" on all 4 drives. Only drive 1 shows "Retries - 486" - the others are "0." These values are not included in the SMART log for some reason. That's the only thing that seems concerning to me, but I can't find a description of that value anywhere.
Any tips or suggestions?
Thanks!
***** smartctl output for hdc *****
smartctl version 5.36 [sparc64-unknown-linux-gnu] Copyright (C) 2002-6 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model: WDC WD20EARS-00MVWB0
Serial Number: WD-WMAZA4135788
Firmware Version: 51.0AB51
User Capacity: 2,000,398,934,016 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: Wed Nov 7 17:37:04 2012 PST
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: (36600) 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: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 255) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
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 253 253 021 Pre-fail Always - 941
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 33
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 084 084 000 Old_age Always - 12375
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 - 31
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 30
193 Load_Cycle_Count 0x0032 056 056 000 Old_age Always - 433980
194 Temperature_Celsius 0x0022 118 108 000 Old_age Always - 32
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 200 200 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 200 200 000 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.
***** smartctl output for hde *****
smartctl version 5.36 [sparc64-unknown-linux-gnu] Copyright (C) 2002-6 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model: WDC WD20EARS-00MVWB0
Serial Number: WD-WMAZA3710116
Firmware Version: 51.0AB51
User Capacity: 2,000,398,934,016 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: Wed Nov 7 17:37:06 2012 PST
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: (36480) 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: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 255) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
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 253 253 021 Pre-fail Always - 950
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 33
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 084 084 000 Old_age Always - 12375
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 - 31
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 30
193 Load_Cycle_Count 0x0032 053 053 000 Old_age Always - 443192
194 Temperature_Celsius 0x0022 115 104 000 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 200 200 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 200 200 000 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.
***** smartctl output for hdg *****
smartctl version 5.36 [sparc64-unknown-linux-gnu] Copyright (C) 2002-6 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model: WDC WD20EARS-00MVWB0
Serial Number: WD-WMAZA3769474
Firmware Version: 51.0AB51
User Capacity: 2,000,398,934,016 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: Wed Nov 7 17:37:08 2012 PST
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: (39000) 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: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 255) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
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 253 253 021 Pre-fail Always - 1033
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 33
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 199 196 000 Old_age Always - 41
9 Power_On_Hours 0x0032 084 084 000 Old_age Always - 12375
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 - 31
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 30
193 Load_Cycle_Count 0x0032 050 050 000 Old_age Always - 451469
194 Temperature_Celsius 0x0022 116 104 000 Old_age Always - 34
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 196 196 000 Old_age Always - 1465
198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 200 200 000 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.
***** smartctl output for hdi *****
smartctl version 5.36 [sparc64-unknown-linux-gnu] Copyright (C) 2002-6 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model: WDC WD20EARS-00MVWB0
Serial Number: WD-WMAZA3875475
Firmware Version: 51.0AB51
User Capacity: 2,000,398,934,016 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: Wed Nov 7 17:37:10 2012 PST
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: (37260) 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: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 255) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
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 100 253 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0027 253 253 021 Pre-fail Always - 958
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 33
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 084 084 000 Old_age Always - 12379
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 - 31
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 30
193 Load_Cycle_Count 0x0032 040 040 000 Old_age Always - 480596
194 Temperature_Celsius 0x0022 118 105 000 Old_age Always - 32
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 200 200 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 200 200 000 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.
4 Replies
Replies have been turned off for this discussion
- Probably /dev/hdg is the culprit looking at the current pending sector count.
Your disks are not on the compatibility list. Also the Load Cycle Count on your disks is pretty high.
I'd suggest you power down your NAS, remove disks (label order), connect them up to a SATA port in your PC and check them using WD Lifeguard Diagnostics. - A current pending sector count of 1465 is definitely a bad sign. I'd replace that disk no matter what Lifeguard said.
- Yikes! Thanks! There are several things you both brought to my attention.
I didn't realize the Load Cycle Counts were that high - most drives are rated for 300,000-600,000, and I thought that number was in the 40,000s, not 400,000s.
Somehow I didn't spot the Current Pending Sector Count on that one drive either.
I also had no idea these drives weren't on the compatibility list - I swear they were when I ordered and installed them (I'm careful about that kind of thing) but they clearly are not. I must have looked in the wrong place, read something that was optimistic about them, or simply misread the list.
I plan to finish backing things up fully, power down, test the drives with Lifeguard, and put compatible drives in the NAS regardless of the result.
I will post back with anything that I find or do so that others can at least refer to this. - The compatibility list did specify a different suffix for the WD20EARS. It specified the 00S8B1. So even when the WD20EARS was on the compatibility list your model was not.
The Load Cycle Count increasing rapidly is due to a WDIDLE3 setting on the drive. You can hook it up to a PC and run WDIDLE3 on it to change the setting.
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