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List: smartmontools-support
Subject: Re: [smartmontools-support] large Raw_Read_Error_Rate and
From: Bruce Allen <ballen () gravity ! phys ! uwm ! edu>
Date: 2007-08-31 6:43:58
Message-ID: Pine.LNX.4.63.0708310141280.17169 () trinity ! phys ! uwm ! edu
[Download RAW message or body]
The 'raw' values for certain Attributes have vendor-specific meanings and
are hard to interpret unless you know exactly how the vendor uses them on
that specific disk model. The bit pattern might be a mix of flags,
counters, and bitmasks, for example, leading to large and strange numbers.
I wouldn't worry about the raw values very much. The normalized values
(VALUE/WORST/THRESH) should have a sensible interpretation.
Cheers,
Bruce
On Tue, 28 Aug 2007, Zhi-Wei Lu wrote:
> Hi,
>
> I am starting to use the 'smartctl' command to monitor disk health.
> While the output for Parallel ATA seems to make sense, the output for
> SATA drive does not. Here are the output for three new SATA disks:
> they all have large values of Raw_Read_Error_Rate and Seek_Error_Rate
>
> SMART Attributes Data Structure revision number: 10
> Vendor Specific SMART Attributes with Thresholds:
> ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE
> UPDATED WHEN_FAILED RAW_VALUE
> 1 Raw_Read_Error_Rate 0x000f 117 095 006 Pre-fail
> Always - 122843483
> 3 Spin_Up_Time 0x0003 098 095 070 Pre-fail
> Always - 0
> 4 Start_Stop_Count 0x0032 100 100 020 Old_age
> Always - 19
> 5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail
> Always - 0
> 7 Seek_Error_Rate 0x000f 066 060 030 Pre-fail
> Always - 4744024
> 9 Power_On_Hours 0x0032 100 100 000 Old_age
> Always - 767
> 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail
> Always - 0
> 12 Power_Cycle_Count 0x0032 100 100 020 Old_age
> Always - 20
> 187 Unknown_Attribute 0x0032 100 100 000 Old_age
> Always - 0
> 189 Unknown_Attribute 0x003a 100 100 000 Old_age
> Always - 0
> 190 Unknown_Attribute 0x0022 066 061 045 Old_age
> Always - 655753250
> 194 Temperature_Celsius 0x0022 034 040 000 Old_age
> Always - 34 (Lifetime Min/Max 0/22)
> 195 Hardware_ECC_Recovered 0x001a 065 060 000 Old_age
> Always - 53599323
> 197 Current_Pending_Sector 0x0012 100 100 000 Old_age
> Always - 0
> 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age
> Offline - 0
> 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age
> Always - 0
> 200 Multi_Zone_Error_Rate 0x0000 100 253 000 Old_age
> Offline - 0
> 202 TA_Increase_Count 0x0032 100 253 000 Old_age
> Always - 0
>
>
> SMART Attributes Data Structure revision number: 10
> Vendor Specific SMART Attributes with Thresholds:
> ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE
> UPDATED WHEN_FAILED RAW_VALUE
> 1 Raw_Read_Error_Rate 0x000f 114 097 006 Pre-fail
> Always - 76651711
> 3 Spin_Up_Time 0x0003 095 095 070 Pre-fail
> Always - 0
> 4 Start_Stop_Count 0x0032 100 100 020 Old_age
> Always - 5
> 5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail
> Always - 0
> 7 Seek_Error_Rate 0x000f 065 060 030 Pre-fail
> Always - 3416515
> 9 Power_On_Hours 0x0032 099 099 000 Old_age
> Always - 973
> 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail
> Always - 0
> 12 Power_Cycle_Count 0x0032 100 100 020 Old_age
> Always - 6
> 187 Unknown_Attribute 0x0032 100 100 000 Old_age
> Always - 0
> 189 Unknown_Attribute 0x003a 100 100 000 Old_age
> Always - 0
> 190 Unknown_Attribute 0x0022 065 059 045 Old_age
> Always - 672596003
> 194 Temperature_Celsius 0x0022 035 041 000 Old_age
> Always - 35 (Lifetime Min/Max 0/23)
> 195 Hardware_ECC_Recovered 0x001a 068 062 000 Old_age
> Always - 184989919
> 197 Current_Pending_Sector 0x0012 100 100 000 Old_age
> Always - 0
> 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age
> Offline - 0
> 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age
> Always - 0
> 200 Multi_Zone_Error_Rate 0x0000 100 253 000 Old_age
> Offline - 0
> 202 TA_Increase_Count 0x0032 100 253 000 Old_age
> Always - 0
>
> SMART Attributes Data Structure revision number: 10
> Vendor Specific SMART Attributes with Thresholds:
> ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE
> UPDATED WHEN_FAILED RAW_VALUE
> 1 Raw_Read_Error_Rate 0x000f 107 095 006 Pre-fail
> Always - 117640378
> 3 Spin_Up_Time 0x0003 096 096 000 Pre-fail
> Always - 0
> 4 Start_Stop_Count 0x0032 100 100 020 Old_age
> Always - 10
> 5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail
> Always - 0
> 7 Seek_Error_Rate 0x000f 074 060 030 Pre-fail
> Always - 27373484
> 9 Power_On_Hours 0x0032 099 099 000 Old_age
> Always - 1469
> 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail
> Always - 0
> 12 Power_Cycle_Count 0x0032 100 100 020 Old_age
> Always - 10
> 187 Unknown_Attribute 0x0032 100 100 000 Old_age
> Always - 0
> 189 Unknown_Attribute 0x003a 100 100 000 Old_age
> Always - 0
> 190 Unknown_Attribute 0x0022 057 055 045 Old_age
> Always - 739835947
> 194 Temperature_Celsius 0x0022 043 045 000 Old_age
> Always - 43 (Lifetime Min/Max 0/25)
> 195 Hardware_ECC_Recovered 0x001a 059 049 000 Old_age
> Always - 242249406
> 197 Current_Pending_Sector 0x0012 100 100 000 Old_age
> Always - 0
> 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age
> Offline - 0
> 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age
> Always - 0
> 200 Multi_Zone_Error_Rate 0x0000 100 253 000 Old_age
> Offline - 0
> 202 TA_Increase_Count 0x0032 100 253 000 Old_age
> Always - 0
>
>
> The first two output were from smartctl version 5.36 on RHEL5, while
> the latter was from smartctl 5.33 on RHEL4.
> I ran smartctl -d ata -a /dev/sd*. All three SATA disks passed the
> overall-health self-assessment and no other error logs presented.
> These are all seagate 250 GB drives (ST3250820AS and ST3250620AS).
> Should I be worried about these drives or these are just features of
> these particular Seagate drives for smartctl output?
>
>
> Zhi-Wei Lu
> Institue for Data Analysis and Visualization (IDAV)
> UC Davis Phone: (530) 752-0494
> Davis, CA 95616 Fax: (530) 752-8894
>
>
>
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