August 18, 201312 yr Hi. I've just finished building the unraid array with 1 single data disk ( no parity ). I'm trying to copy data from my existing drive to unraid array. But the read/ and write speed is painfully slow. Hovering around 100KB/s - 1MB/s Here's what happened. - I let it run overnight, and it managed to copy around 500GB, at 11MB/s ( normal, since I'm on 100Mbps network) - In the morning, suddenly it drops to 1MB/s, and even slower, and continue for next 12hrs until now. - I tried restart the unraid server, restart my pc, still happens. - The strange thing, when I start to copy a file to the unraid server, it start normally at 11MB/s for around 10-20 seconds or so, and continue to slow down , after the first 1 minute, it hovering around 200KB/s-1MB/s. Because it's able to achieve fastest possible speed before, ( at leat 8hrs running continuously), I believe it's not the drive issue - Read speed is <1MB/s One thing to notice during the preclear, just in case it's a hardware issue. - 1st preclear, it stuck and post read, 30%, very slow. Pre read was normal, 100MB/s + - I restart the preclear, stuck at around the same mark again, but in pre-read. - I proceed to do another 2 preclear without pre/post read. Please see the attached syslog. Any comments would be much appreciated. I'm running on 5.0rc16 syslog-2013-08-18.txt
August 18, 201312 yr Author SMART report smartctl -a -d ata /dev/sdb smartctl 5.40 2010-10-16 r3189 [i486-slackware-linux-gnu] (local build) Copyright © 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Device Model: WDC WD30EFRX-68AX9N0 Serial Number: WD-WMC1T3766887 Firmware Version: 80.00A80 User Capacity: 3,000,592,982,016 bytes Device is: Not in smartctl database [for details use: -P showall] ATA Version is: 9 ATA Standard is: Exact ATA specification draft version not indicated Local Time is: Sun Aug 18 23:59:55 2013 SGT 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: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled. Self-test execution status: ( 249) Self-test routine in progress... 90% of test remaining. Total time to complete Offline data collection: (39360) 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. SCT capabilities: (0x70bd) 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 0x002f 071 071 051 Pre-fail Always - 111980 3 Spin_Up_Time 0x0027 204 166 021 Pre-fail Always - 4783 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 17 5 Reallocated_Sector_Ct 0x0033 195 195 140 Pre-fail Always - 155 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 97 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 - 14 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 7 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 9 194 Temperature_Celsius 0x0022 112 110 000 Old_age Always - 38 196 Reallocated_Event_Count 0x0032 151 151 000 Old_age Always - 49 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Extended offline Aborted by host 90% 97 - 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.
August 18, 201312 yr Author Running hdparm test /dev/sdb: Timing cached reads: 6720 MB in 2.00 seconds = 3362.81 MB/sec Timing buffered disk reads: 192 MB in 3.00 seconds = 63.93 MB/sec
August 18, 201312 yr Your hard drive as 155 relocated sector count. That's a pretty high number. I don't know if I would trust that hard drive.
August 18, 201312 yr Your hard drive as 155 relocated sector count. That's a pretty high number. I don't know if I would trust that hard drive. Iwould not trust it.
August 18, 201312 yr Hi. I've just finished building the unraid array with 1 single data disk ( no parity ). I'm trying to copy data from my existing drive to unraid array. But the read/ and write speed is painfully slow. Hovering around 100KB/s - 1MB/s Here's what happened. - I let it run overnight, and it managed to copy around 500GB, at 11MB/s ( normal, since I'm on 100Mbps network) - In the morning, suddenly it drops to 1MB/s, and even slower, and continue for next 12hrs until now. - I tried restart the unraid server, restart my pc, still happens. - The strange thing, when I start to copy a file to the unraid server, it start normally at 11MB/s for around 10-20 seconds or so, and continue to slow down , after the first 1 minute, it hovering around 200KB/s-1MB/s. Because it's able to achieve fastest possible speed before, ( at leat 8hrs running continuously), I believe it's not the drive issue - Read speed is <1MB/s One thing to notice during the preclear, just in case it's a hardware issue. - 1st preclear, it stuck and post read, 30%, very slow. Pre read was normal, 100MB/s + - I restart the preclear, stuck at around the same mark again, but in pre-read. - I proceed to do another 2 preclear without pre/post read. Please see the attached syslog. Any comments would be much appreciated. I'm running on 5.0rc16 The log is only 16 minute long. Post a log taken after a slow copy.
August 19, 201312 yr Author I do a copy again this morning, and it resumes at normal speed (11MB/s ). I havent done anything. The log i posted is all i have, the unraid server has been running for 2 days now. I'm not sure why it only has 16 minutes log. How bad is the HDD ? It's newly purchased ! Can I RMA with this condition ? Btw, the unraid server running on G1620, 4GB ram, ECS H2-I2 on u-nas 400 box
August 19, 201312 yr If you bought it within 30 days most stores will let you exchange it for another one. If it is older than that you can rma it with the manufactures warranty. I would exchange it if it was me. Not worth the risk of it failing later...
August 19, 201312 yr Author It's over 30days already, waited a few weeks to get all the components up to assemble the server, so I guess no exchange. Mine is WD Red, 3TB, can I RMA it with this condition ? I mean, so far, it can read and write properly, just slow sometime ( like what I saw yesterday), it was normal this morning, I'm continue to monitor. Is the bad sector high enought to RMA ?
August 19, 201312 yr I have never had rma'd a hard drive before so I am not 100% sure what the process is, but from what I understand you go online fill out the rma form and I believe WD gives you the option for them to send you the replacement first and you send yours back afterward. I'm not sure f you have to specify what the problem is but if you do just say the say the hard drive has an unacceptable amount of relocated sector count. To answer your question, IMO yes any new hard drive with any amount of relocated sectors is worth the rma process.
August 19, 201312 yr It's over 30days already, waited a few weeks to get all the components up to assemble the server, so I guess no exchange. Mine is WD Red, 3TB, can I RMA it with this condition ? I mean, so far, it can read and write properly, just slow sometime ( like what I saw yesterday), it was normal this morning, I'm continue to monitor. Is the bad sector high enought to RMA ? WD has reasons to select for RMA. One of those reasons is poor performance. I believe yours would qualify. At least the last time I RMA'd to WD anyway. I am about to RMA a black for the same reason so I will have first hand experience myself in a few days. In any case Relocated sectors are definately a reasonable reason to return it.
Archived
This topic is now archived and is closed to further replies.