Date: Thu, 12 Nov 2009 13:25:12 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-stable@freebsd.org Subject: SMART Message-ID: <hdguqv$isj$1@ger.gmane.org> In-Reply-To: <20091112115350.GA18542@icarus.home.lan> References: <20091112103308.GA2536@hiMolde.no> <20091112115350.GA18542@icarus.home.lan>
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Jeremy Chadwick wrote:
> I can teach you how to decode/read SMART statistics correctly.
>
Actually, it would be good if you taught more than him :)
I've always wondered how important are each of the dozen or so
statistics and what indicates what...
Here is for example my desktop drive:
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 087 083 006 Pre-fail
Always - 45398197
3 Spin_Up_Time 0x0003 096 093 000 Pre-fail
Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age
Always - 64
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail
Always - 0
7 Seek_Error_Rate 0x000f 084 060 030 Pre-fail
Always - 247407473
9 Power_On_Hours 0x0032 089 089 000 Old_age
Always - 10155
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail
Always - 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age
Always - 64
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always
- 0
189 High_Fly_Writes 0x003a 100 100 000 Old_age Always
- 0
190 Airflow_Temperature_Cel 0x0022 058 055 045 Old_age Always
- 42 (Lifetime Min/Max 37/44)
194 Temperature_Celsius 0x0022 042 045 000 Old_age Always
- 42 (0 20 0 0)
195 Hardware_ECC_Recovered 0x001a 062 059 000 Old_age Always
- 45398197
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
I see many values exceeding threshold but since I see it so often on
other drives I don't know what the threshold is for.
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