My Toshiba Satellite A660 has been in for servicing quite a bit over
the last 8 months for ongoing problems, and it seems over them now. I
just managed to do a SMART report, and all seems normal except for a
rather large number that I'm not sure what to make of I already
followed the wikipedia breakdown of the parameters). I've attached an
extract of the report below, and I removed the VALUE column preceding
the WORST column because all the figures were the same except for #10,
Spin_Retry_Count (102 instead of 100). Also, #194,
Temperature_Celsius as the note "(Min/Max 24/53)" after the RAW_VALUE
figure. This edits are attempts to keep text rows below 80 characters
in order to avoid wrap-around.
What I really caught my attention was Power-Off Retract Count raw
value, 2293768. The normalized values seem to indicate that all is
well, and I tried googling typical values. The only hit that seemed
relevant is
http://community.wdc.com/t5/Desktop-Portable-Drives/HDD-and-BIOS-detection-issues/td-p/359927,
which reports a raw value of 63.
The Load_Cycle_Count 3871 also seems high, but Wikipedia says typical
HDs can sustain 300K to 600K.
Further googling says that some linux systems can drive up the count,
but this is Windows 7.
Is the large raw number ignorable considering the healthy-looking
normalized number?
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smartctl 5.43 2012-06-30 r3573 [i686-pc-cygwin-win7(64)]
(cygwin-5.43-1)
Copyright (C) 2002-12 by Bruce Allen,
http://smartmontools.sourceforge.net
=== START OF INFORMATION SECTION ===
Device Model: TOSHIBA MK6476GSXN
Serial Number: Y1DQC0GOT
LU WWN Device Id: 5 000039 3a3f854e2
Firmware Version: GB001M
User Capacity: 640,135,028,736 bytes [640 GB]
Sector Size: 512 bytes logical/physical
ATA Version is: 8
ATA Standard is: Exact ATA specification draft version not indicated
Local Time is: Thu Jul 26 01:09:18 2012 EDT
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
<...snip...>
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME WORST THRESH TYPE UPDATED WHEN_FAILED
RAW_VALUE
1 Raw_Read_Error_Rate 100 050 Pre-fail Always -
0
2 Throughput_Performance 100 050 Pre-fail Offline -
0
3 Spin_Up_Time 100 001 Pre-fail Always -
2025
4 Start_Stop_Count 100 000 Old_age Always -
106
5 Reallocated_Sector_Ct 100 050 Pre-fail Always -
0
7 Seek_Error_Rate 100 050 Pre-fail Always -
0
8 Seek_Time_Performance 100 050 Pre-fail Offline -
0
9 Power_On_Hours 099 000 Old_age Always -
405
10 Spin_Retry_Count 100 030 Pre-fail Always -
0
12 Power_Cycle_Count 100 000 Old_age Always -
106
191 G-Sense_Error_Rate 100 000 Old_age Always -
1
192 Power-Off_Retract_Count 100 000 Old_age Always -
2293768
193 Load_Cycle_Count 100 000 Old_age Always -
3871
194 Temperature_Celsius 100 000 Old_age Always -
38
196 Reallocated_Event_Count 100 000 Old_age Always -
0
197 Current_Pending_Sector 100 000 Old_age Always -
0
198 Offline_Uncorrectable 100 000 Old_age Offline -
0
199 UDMA_CRC_Error_Count 200 000 Old_age Always -
0
220 Disk_Shift 100 000 Old_age Always -
8255
222 Loaded_Hours 100 000 Old_age Always -
213
223 Load_Retry_Count 100 000 Old_age Always -
0
224 Load_Friction 100 000 Old_age Always -
0
226 Load-in_Time 100 000 Old_age Always -
305
240 Head_Flying_Hours 100 001 Pre-fail 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 Short offline Completed without error 00%
125 -
<...snip...>