Media_Wearout_Indicator not working on Intel 520 SSD

Hello,


I have dire problems making my Intel 520 SSD report anything meaningful in terms of wear and tear.

Media_Wearout_Indicator stays at "100" even after a year of extensive use in a server and Power_On_Hours shows "74285755253828" as the raw value.

I'm attaching the output of "smartctl -a /dev/sda" below. I'm running Debian.

Thank you!

--------------------
smartctl 5.40 2010-07-12 r3124 [x86_64-unknown-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Device Model:     INTEL SSDSC2CW120A3
Serial Number:    CVCV24810478120BGN
Firmware Version: 400i
User Capacity:    120,034,123,776 bytes
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   9
ATA Standard is:  Not recognized. Minor revision code: 0x0110
Local Time is:    Mon Mar 10 12:22:27 2014 EET
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

General SMART Values:
Offline data collection status:  (0x00) Offline data collection activity
                                        was never started.
                                        Auto Offline Data Collection: Disabled.
Self-test execution status:      (   0) The previous self-test routine completed
                                        without error or no self-test has ever 
                                        been run.
Total time to complete Offline 
data collection:                 (2097) seconds.
Offline data collection
capabilities:                    (0x7f) SMART execute Offline immediate.
                                        Auto Offline data collection on/off support.
                                        Abort Offline collection upon new
                                        command.
                                        Offline surface scan supported.
                                        Self-test supported.
                                        Conveyance Self-test supported.
                                        Selective Self-test supported.
SMART capabilities:            (0x0003) Saves SMART data before entering
                                        power-saving mode.
                                        Supports SMART auto save timer.
Error logging capability:        (0x01) Error logging supported.
                                        General Purpose Logging supported.
Short self-test routine 
recommended polling time:        (   1) minutes.
Extended self-test routine
recommended polling time:        (  48) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x0021) SCT Status supported.
                                        SCT Data Table supported.

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
  5 Reallocated_Sector_Ct   0x0032   100   100   000    Old_age   Always       -       0
  9 Power_On_Hours          0x0032   000   000   000    Old_age   Always       -       74285755253828
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       7
170 Unknown_Attribute       0x0033   100   100   010    Pre-fail  Always       -       0
171 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       0
172 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       0
174 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       7
184 End-to-End_Error        0x0033   100   100   090    Pre-fail  Always       -       0
187 Reported_Uncorrect      0x000f   106   106   050    Pre-fail  Always       -       12970489
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       7
225 Load_Cycle_Count        0x0032   100   100   000    Old_age   Always       -       398615
226 Load-in_Time            0x0032   100   100   000    Old_age   Always       -       65535
227 Torq-amp_Count          0x0032   100   100   000    Old_age   Always       -       0
228 Power-off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       65535
232 Available_Reservd_Space 0x0033   100   100   010    Pre-fail  Always       -       0
233 Media_Wearout_Indicator 0x0032   100   100   000    Old_age   Always       -       0
241 Total_LBAs_Written      0x0032   100   100   000    Old_age   Always       -       398615
242 Total_LBAs_Read         0x0032   100   100   000    Old_age   Always       -       1152
249 Unknown_Attribute       0x0013   100   100   000    Pre-fail  Always       -       9987

SMART Error Log Version: 0
No Errors Logged

SMART Self-test log structure revision number 0
Warning: ATA Specification requires self-test log structure revision number = 1
No self-tests have been logged.  [To run self-tests, use: smartctl -t]

Note: selective self-test log revision number (0) not 1 implies that no selective self-test has ever been run
SMART Selective self-test log data structure revision number 0
Note: revision number not 1 implies that no selective self-test has ever been run
 SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
    1        0        0  Not_testing
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.


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