Thomas Backman wrote:
On Nov 12, 2009, at 1:25 PM, Ivan Voras wrote:
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.
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.
Good to know.
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.)
Yes, it's Seagate. Statistically I have the least problems with their
drives. But I imagine that lack of standardization about these
statistics very much limits the usability of SMART, right?
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