Below is the table of Hard Drive S.M.A.R.T attributes that supported by Hard Drive Monitor.
Please note, not all hard drives support S.M.A.R.T features. The S.M.A.R.T. can be controlled in the BIOS of most computers. It may or may not be enabled on your computer, for most current hard drives, this entry should be set to "Enabled".
ID |
Hex |
Attribute name |
Better |
Description |
01 |
01 |
Read Error Rate |
Lower |
Indicates the rate of hardwareread errors that occurred when reading data from a disk surface. Any number indicates a problem with either disk surface or read/write heads. |
02 |
02 |
Throughput Performance |
Higher |
Overall (general) throughputperformance of a hard disk drive. If the value ofthis attribute is decreasing there is a high probability that there is aproblem with the disk. |
03 |
03 |
Spin-Up Time |
Lower |
Average time of spindle spin up (from zero RPM to fully operational). |
04 |
04 |
Start/Stop Count |
|
A tally of spindle start/stopcycles. |
05 |
05 |
Reallocated Sectors Count |
Lower |
Count of reallocated sectors. When the hard drive finds a read/write/verificationerror, it marks this sector as "reallocated" and transfers data to a special reserved area (spare area). This process is also known as remappingand "reallocated" sectors are called remaps. This is why, on modern hard disks, "bad blocks" cannot be found while testing thesurface — all bad blocks are hidden in reallocated sectors. However, the more sectors that are reallocated,the more read/write speed will decrease. |
06 |
06 |
Read Channel Margin |
|
Margin of a channel while reading data. The function of this attribute is not specified. |
07 |
07 |
Seek Error Rate |
Lower |
Rate of seek errors of the magnetic heads. If there is a failure in the mechanical positioning system, a servo damage or a thermal widening of the hard disk, seek errors arise. More seek errors indicates a worsening condition of a disk surface and the mechanical subsystem. |
08 |
08 |
Seek Time Performance |
Higher |
Average performance of seek operations of the magnetic heads. If thisattribute is decreasing, it is a sign of problems in themechanical subsystem. |
09 |
09 |
Power-On Hours (POH) |
Lower |
Count of hours in power-on state. The raw value of this attribute shows total count of hours (or minutes, or seconds, depending on manufacturer) in power-on state. |
10 |
0A |
Spin Retry Count |
Lower |
Count of retry of spin startattempts. This attribute stores a total count of the spin start attempts to reach the fully operational speed under the condition that the first attempt was unsuccessful). An increase of this attribute value is a sign of problems in the hard disk mechanical subsystem. |
11 |
0B |
Recalibration Retries |
Higher |
This attribute indicates the number of times recalibration was requested (under the condition that the first attempt wasunsuccessful). A decrease of this attribute value is a sign of problems in the hard disk mechanical subsystem. |
12 |
0C |
Device Power Cycle Count |
|
This attribute indicates the count of full hard disk power on/off cycles. |
13 |
0D |
Soft Read Error Rate |
Lower |
Uncorrected read errors reported to the operating system. If the value is non-zero, you should back up your data. |
190 |
BE |
Airflow Temperature (WDC) |
Lower |
Airflow temperature on WesternDigital HDs (Same as temp. (C2), but current value is 50 less.) |
190 |
BE |
Temperature Difference from100 |
Higher |
Value is equal to (100 -temp°C), allowing manufacturer to set a minimum threshold which corresponds to a maximumtemperature. Seagate ST910021AS: Verified Present Seagate ST3802110A: Verified Present 2007-02-13
Seagate ST980825AS: Verified Present 2007-04-05
Seagate ST3320620AS: VerifiedPresent 2007-04-23
Seagate ST3500641AS: VerifiedPresent 2007-06-12
Seagate ST3250824AS: VerifiedPresent 2007-08-07
|
191 |
BF |
G-sense error rate |
Lower |
Frequency of mistakes as a result of impact loads |
192 |
C0 |
Power-off Retract Count |
|
Number of times the heads are loaded off the media. Heads can be unloaded without actually powering off. (or Emergency Retract Cyclecount -Fujitsu) |
193 |
C1 |
Load/Unload Cycle |
|
Count of load/unload cycles into head landing zone position. |
194 |
C2 |
Temperature |
Lower |
Current internal temperature. |
195 |
C3 |
Hardware ECC Recovered |
Higher |
Time between ECC-corrected errors. |
196 |
C4 |
Reallocation Event Count |
Lower |
Count of remap operations. The raw value of this attribute shows the total number of attempts to transfer data from reallocatedsectors to a spare area. Both successful & unsuccessful attempts are counted. |
197 |
C5 |
Current Pending Sector Count |
Lower |
Number of "unstable" sectors (waiting to be remapped). If the unstable sector is subsequently
written or read successfully, this value is decreased and the sector is not remapped. Read errors on the sector
will not remap the sector, it will only be remapped on a failed write attempt. This can be problematic to test
because cached writes will not remap the sector, only direct I/O writes to the disk. |
198 |
C6 |
Uncorrectable Sector Count |
Lower |
The total number of uncorrectable errors when
reading/writing a sector. A rise in the value of this
attribute indicates defects of the disk surface and/or
problems in the mechanical subsystem. |
199 |
C7 |
UltraDMA CRC Error Count |
Lower |
The number of errors in data transfer via the interface
cable as determined by ICRC (Interface Cyclic
Redundancy Check). |
200 |
C8 |
Write Error Rate / Multi-Zone Error Rate |
Lower |
The total number of errors when writing a sector. |
201 |
C9 |
Soft Read Error Rate |
Lower |
Number of off-track errors. If non-zero, make a backup. |
252 |
CA |
Data Address Mark errors |
Lower |
Number of Data Address Mark errors (or vendorspecific). |
203 |
CB |
Run Out Cancel |
Lower |
Number of ECC errors |
204 |
CC |
Soft ECC Correction |
Lower |
Number of errors corrected by software ECC |
205 |
CD |
Thermal Asperity Rate (TAR) |
Lower |
Number of thermal asperity errors. |
206 |
CE |
Flying Height
|
|
|
207 |
CF |
Spin High Current |
|
Amount of high current used to spin up the drive. |
208 |
D0 |
Spin Buzz |
|
Number of buzz routines to spin up the drive |
209 |
D1 |
Offline Seek Performance |
|
Drive’s seek performance during offline operations |
220 |
DC |
Disk Shift |
Lower |
Distance the disk has shifted relative to the spindle (usually due to shock). Unit of measure is unknown. |
221 |
DD |
G-Sense Error Rate |
Lower |
The number of errors resulting from externally-induced
shock & vibration. |
222 |
DE |
Loaded Hours
|
|
Time spent operating under data load (movement of
magnetic head armature) |
223 |
DF |
Load/Unload Retry Count |
|
Number of times head changes position. |
224 |
E0 |
Load Friction |
Lower |
Resistance caused by friction in mechanical parts while
operating. |
225 |
E1 |
Load/Unload Cycle Count |
Lower |
Total number of load cycles |
226 |
E2 |
Load 'In'-time |
|
Total time of loading on the magnetic heads actuator
(time not spent in parking area). |
227 |
E3 |
Torque Amplification Count |
Lower |
Number of attempts to compensate for platter speed
variations |
228 |
E4 |
Power-Off Retract Cycle |
Lower |
The number of times the magnetic armature was
retracted automatically as a result of cutting power. |
230 |
E6 |
GMR Head Amplitude |
|
Amplitude of "thrashing" (distance of repetitive
forward/reverse head motion) |
231 |
E7 |
Temperature |
Lower |
Drive Temperature |
240 |
F0 |
Head Flying Hours |
Lower |
Time while head is positioning |
250 |
FA |
Read Error Retry Rate |
Lower |
Number of errors while reading from a disk |