September 21, 201015 yr I just did my 2nd parity check ever (only had the product a month). It says it has completed with no errors, but I noticed on my hard drive listing, to the far right one of my hard drives has an error count of 342. Is this something I should be concerned with?
September 21, 201015 yr Yes, this is something you should be concerned about. I wrote up an explanation a while back on the troubeshooting page. Read here After reading, you need to get a syslog and a smart report from the drive showing the errors to that the Linux gurus here can help figure out what went wrong. Chances are you have a cabling problem or a drive problem. But could also be bad memory or PSU. Post the materials and we'll know more.
September 21, 201015 yr I just did my 2nd parity check ever (only had the product a month). It says it has completed with no errors, but I noticed on my hard drive listing, to the far right one of my hard drives has an error count of 342. Is this something I should be concerned with? Yes those are "read" errors... You should run a smart report on that drive to see if it is re-allocating unreadable sectors. Log in as "root" on the system console or via telnet and then type: smartctl -d ata -a /dev/sdX where sdX = the three letter designation for your specific hard disk device. (in parens on the device assignment page) Look for the lines showing sectors pending re-allocation or pending re-allocation. Joe L.
September 21, 201015 yr Author Here is the result: === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED General SMART Values: Offline data collection status: (0x84) Offline data collection activity was suspended by an interrupting command from host. 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: (15960) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off supp ort. 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: ( 185) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x3037) SCT Status supported. SCT Feature Control supported. SCT Data Table supported. 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 198 198 051 Pre-fail Always - 1983 3 Spin_Up_Time 0x0027 177 177 021 Pre-fail Always - 4125 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 42 5 Reallocated_Sector_Ct 0x0033 174 174 140 Pre-fail Always - 208 7 Seek_Error_Rate 0x002e 100 253 000 Old_age Always - 0 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 454 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 - 10 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 7 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 34 194 Temperature_Celsius 0x0022 117 108 000 Old_age Always - 30 196 Reallocated_Event_Count 0x0032 001 001 000 Old_age Always - 205 197 Current_Pending_Sector 0x0032 200 198 000 Old_age Always - 11 198 Offline_Uncorrectable 0x0030 198 198 000 Old_age Offline - 400 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 198 198 000 Old_age Offline - 454 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.
September 21, 201015 yr Yes, a lot of re-allocated sectors, and a few pending re-allocation too. The "Normalized" value of 174 is uncomfortably close to the failure threshold of 140. I'd consider that drive a strong candidate for RMA and replacement. 5 Reallocated_Sector_Ct 0x0033 174 174 140 Pre-fail Always - 208
September 21, 201015 yr Author Thanks, Time to order a new drive! I assume replacing it still uses the following directions? * backup 'config/super.dat' and 'config/disk.cfg' files to workstation * Stop the array * Power down * Replace harddrive with new drive. * Turn on * Replaced drive appears with blue dot * Tick the "I'm sure" checkbox, and press "Start will bring the array on-line, start Data-Rebuild, and then expand the file system." * Hefty disk activity and main page will show lots of reading on "the other" disks and writing on new disk as data is being rebuilt. * End
September 21, 201015 yr Thanks, Time to order a new drive! I assume replacing it still uses the following directions? * backup 'config/super.dat' and 'config/disk.cfg' files to workstation * Stop the array * Power down * Replace harddrive with new drive. * Turn on * Replaced drive appears with blue dot * Tick the "I'm sure" checkbox, and press "Start will bring the array on-line, start Data-Rebuild, and then expand the file system." * Hefty disk activity and main page will show lots of reading on "the other" disks and writing on new disk as data is being rebuilt. * End Yes... same directions still apply. Just remember to only press "Start" and not the button labeled as "restore" (if it exists on your version of unRAID. The button labeled as"restore" was removed in the last two versions of unRAID and replaced with a command-line command. It did not "restore" anything, it set a new initial configuration, and that is the last thing you would want to do when replacing a drive as it immediately invalidates parity.)
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