December 2, 201411 yr I've asked a few times about high temps and when to get worried. There's never been a hard and fast rule but never felt like i should get excited. However, until now I've never seen a temp over the low 40'sC. When i first set up my server, maybe with 6 or 8 drives everything stayed cool, even in a parity check, even with the fans on low. Since I've had the case loaded with drives, and some of them are up in age, i've had to bump the fans up during a parity check to keep the temps down in the upper 30s to low 40s. Two older Hitachi 7200 RPM drives are the worst offenders and the oldest in the case. I'm guessing here they are over 6 yrs. 12/1 a parity check ran and i was out of town. I took a look and found one of those two drives has a high temp reading of 57C and while I can't be 100% sure i think that must have just occurred. I ran a short smart test and here is what i found: smartctl -a -d ata /dev/sdj smartctl 6.2 2013-07-26 r3841 [i686-linux-3.9.11p-unRAID] (local build) Copyright © 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Hitachi Deskstar 7K2000 Device Model: Hitachi HDS722020ALA330 Serial Number: JK1170YAHLWY2P LU WWN Device Id: 5 000cca 221d6af0f Firmware Version: JKAOA28A User Capacity: 2,000,398,934,016 bytes [2.00 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: Mon Dec 1 23:13:08 2014 EST 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: (0x85) Offline data collection activity was aborted 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: (22036) seconds. Offline data collection capabilities: (0x5b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. No 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: ( 367) minutes. SCT capabilities: (0x003d) SCT Status supported. SCT Error Recovery Control 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 0x000b 095 095 016 Pre-fail Always - 13 2 Throughput_Performance 0x0005 132 132 054 Pre-fail Offline - 103 3 Spin_Up_Time 0x0007 116 116 024 Pre-fail Always - 624 (Average 624) 4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 1486 5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0 7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0 8 Seek_Time_Performance 0x0005 112 112 020 Pre-fail Offline - 39 9 Power_On_Hours 0x0012 095 095 000 Old_age Always - 37427 10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 480 192 Power-Off_Retract_Count 0x0032 099 099 000 Old_age Always - 1605 193 Load_Cycle_Count 0x0012 099 099 000 Old_age Always - 1605 194 Temperature_Celsius 0x0002 200 200 000 Old_age Always - 30 (Min/Max 17/58) 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0 197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0 SMART Error Log Version: 0 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% 37427 - # 2 Short offline Completed without error 00% 33729 - # 3 Short offline Completed without error 00% 29966 - # 4 Short offline Completed without error 00% 24308 - # 5 Short offline Completed without error 00% 18172 - # 6 Short offline Completed without error 00% 10872 - # 7 Short offline Completed without error 00% 10871 - # 8 Short offline Completed without error 00% 10871 - # 9 Short offline Completed without error 00% 10871 - #10 Short offline Completed without error 00% 10869 - #11 Short offline Completed without error 00% 10869 - #12 Short offline Completed without error 00% 10869 - 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. Nothing jumps out at me, other than that one high temp. This is also one of the noisier drives in the group. So, would you replace this drive pre-fail? I have a warm spare and was considering replacing it and ordering a new warm spare for the case. Thoughts?
December 2, 201411 yr Author For what it's worth, here is the smart test of the other drive of the same vintage in the box: smartctl -a -d ata /dev/sdi smartctl 6.2 2013-07-26 r3841 [i686-linux-3.9.11p-unRAID] (local build) Copyright © 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Hitachi Deskstar 7K2000 Device Model: Hitachi HDS722020ALA330 Serial Number: JK1170YAGS9G8T LU WWN Device Id: 5 000cca 221ca980c Firmware Version: JKAOA3MA User Capacity: 2,000,398,934,016 bytes [2.00 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: Mon Dec 1 23:31:45 2014 EST 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: (22183) seconds. Offline data collection capabilities: (0x5b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. No 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: ( 370) minutes. SCT capabilities: (0x003d) SCT Status supported. SCT Error Recovery Control 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 0x000b 100 100 016 Pre-fail Always - 0 2 Throughput_Performance 0x0005 133 133 054 Pre-fail Offline - 102 3 Spin_Up_Time 0x0007 122 122 024 Pre-fail Always - 579 (Average 605) 4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 1490 5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0 7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0 8 Seek_Time_Performance 0x0005 121 121 020 Pre-fail Offline - 35 9 Power_On_Hours 0x0012 096 096 000 Old_age Always - 31334 10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 289 192 Power-Off_Retract_Count 0x0032 099 099 000 Old_age Always - 1869 193 Load_Cycle_Count 0x0012 099 099 000 Old_age Always - 1869 194 Temperature_Celsius 0x0002 187 187 000 Old_age Always - 32 (Min/Max 16/42) 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0 197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0 SMART Error Log Version: 0 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% 31334 - # 2 Short offline Completed without error 00% 27636 - # 3 Short offline Completed without error 00% 13108 - # 4 Short offline Completed without error 00% 5924 - # 5 Short offline Completed without error 00% 5924 - # 6 Short offline Completed without error 00% 5924 - # 7 Short offline Completed without error 00% 7 - 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. While its not running as hot, it is positioned above the 1st. Meaning the heat of the lower drive could be affecting the drive above. It is the 2nd hottest in the array and the only other of that age.
December 3, 201411 yr Author Any thoughts? should i be worried about an instance of 57/58? sign of failure coming?
December 3, 201411 yr I would double check for a dust bunny or air flow problem. Yes, 57/58 is high enough to be a concern. But your drive does not seem to operating at 55+, the report shows 30 when it was run. 1) remove any obstructions and dust build up, check fans for proper operating speeds. 2) run a parity check and watch the temperatures. 3) move the drive to a new position in the case. 4) I would not prefail the drive unless you have unexplained high operating temperature.
December 3, 201411 yr How is this drive mounted in the case? The bottom of the disk seems to be where the most heat is released. Cooling there is important. If there is little or no air flow around the drive, it will get hot. It is hard to tell if this 58C was a one time thing when you AC failed in the middle of summer during a parity check, a sensor anomaly (never heard of that but occasionally sensors don't work properly), or if this is a frequent occurrence during parity checks. I would start a parity check and watch the temp on that (and your other) drives. If you see any rise to unsafe levels, stop the parity check, shutdown, and take some corrective action (add cooling, more the drive), and try it again. As a rule of thumb, my not very scientific scale is, under 40 is great, 40C-44C is good, 45C-50C is too warm and pushing it, and over 50C is definitely too hot. If I saw a drive running at 58C I would definitely take action. The drive is not showing any signs of failure at this point, but you don't want to put 100s or 1000s of hours on the drive at those temps IMO.
December 4, 201411 yr Author How is this drive mounted in the case? The bottom of the disk seems to be where the most heat is released. Cooling there is important. If there is little or no air flow around the drive, it will get hot. It is hard to tell if this 58C was a one time thing when you AC failed in the middle of summer during a parity check, a sensor anomaly (never heard of that but occasionally sensors don't work properly), or if this is a frequent occurrence during parity checks. I would start a parity check and watch the temp on that (and your other) drives. If you see any rise to unsafe levels, stop the parity check, shutdown, and take some corrective action (add cooling, more the drive), and try it again. As a rule of thumb, my not very scientific scale is, under 40 is great, 40C-44C is good, 45C-50C is too warm and pushing it, and over 50C is definitely too hot. If I saw a drive running at 58C I would definitely take action. The drive is not showing any signs of failure at this point, but you don't want to put 100s or 1000s of hours on the drive at those temps IMO. I have an Antec 1200 case, with the original cages. There is plenty of space around these drives. This image shows the cage with a single drive. I have 4 of these cages filled (12 drives) but there is a good gap between the drives so plenty of air flow. around top and bottom. This particular drive is in the top of the cage, 2nd cage down from the top. There is a scrim type air filter and it wasn't perfectly clean, not clogged, but not ideal. Still the fan runs 24/7 and even with the filter a holding a little dust there would be air flow. This one of the two oldest in the case and they have progressively run hotter and hotter with time as best I can tell. Last month in the parity check they got over 44 and I turned the fan speed up which did keep it cool. This is the first time I saw any temp that high though and I just wasn't home when it ran. This case has always done a great job of keeping drives cool. They used to all stay below 40 until a couple started aging, but mostly they still stay in the 30s. I added the 4th cage to hold 12 drives, so it looks like this. My only gripe is the filters are a bit of a pain to clean. Blowing them out with air helps, but to pull them you have to open the case, loosen the cage and slide it forward a bit till you can pull the filter out the top. There is another case where the cages open from the front, much easlier to clean, but it won't hold 12 drives and i was reading the door mechanics weren't the best quality. The build quality of this case is solid.
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