Date: Thu, 12 Nov 2009 13:29:32 +0100 From: Thomas Backman <serenity@exscape.org> To: Ivan Voras <ivoras@freebsd.org> Cc: freebsd-stable@freebsd.org Subject: Re: SMART Message-ID: <288A7D7F-C247-4493-8ED1-E67FFC3E0201@exscape.org> In-Reply-To: <hdguqv$isj$1@ger.gmane.org> References: <20091112103308.GA2536@hiMolde.no> <20091112115350.GA18542@icarus.home.lan> <hdguqv$isj$1@ger.gmane.org>
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On Nov 12, 2009, at 1:25 PM, Ivan Voras wrote:
> Actually, it would be good if you taught more than him :)
>=20
> I've always wondered how important are each of the dozen or so =
statistics and what indicates what...
>=20
> Here is for example my desktop drive:
>=20
> 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
>=20
> 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.
None of the your values are exceeding the threshold - it works =
backwards. If the value is LOWER than the threshold, you might be in =
trouble.
Also, judging by the raw read error rate, seek error rate and hardward =
ECC recovered, allow me to guess that this is a Seagate drive. :-)
(Seagate drives, perhaps among others, use these raw values way =
differently than others. My Hitachi 7K1000.B has 0 on those.)
Regards,
Thomas=
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