### How do I interpret some SMART values? ### | |
The following list describes some S.M.A.R.T. attributes and the typical meaning… | |
Read Error Rate (ID 0x01): Indicates the rate of hardware read errors that occu… | |
Throughput Performance (ID 0x02): Overall (general) throughput performance of a… | |
Spin-Up Time (ID 0x03): Average time of spindle spin up (from zero RPM to fully… | |
Start/Stop Count (ID 0x04): A tally of spindle start/stop cycles. The spindle t… | |
Reallocated Sectors Count (ID 0x05): Count of reallocated sectors. When the har… | |
Read Channel Margin (ID 0x06): Margin of a channel while reading data. The func… | |
Seek Error Rate (ID 0x07): Rate of seek errors of the magnetic heads. If there … | |
Seek Time Performance (ID 0x08): Average performance of seek operations of the … | |
Power-On Hours (POH) (ID 0x09): Count of hours in power-on state. The raw value… | |
Spin Retry Count (ID 0x0A): Count of retry of spin start attempts. This attribu… | |
Recalibration Retries / Calibration_Retry_Count (ID 0x0B): This attribute indic… | |
Power Cycle Count (ID 0x0C): This attribute indicates the count of full hard di… | |
Soft Read Error Rate / Soft Read Error Rate (ID 0x0D): Uncorrected read errors … | |
SATA Downshift Error Count (ID 0xB7): This is an attribute specific to Western … | |
End-to-End error (ID 0xB8): This attribute is a part of HP's SMART IV technolog… | |
Head Stability (ID 0xB9): Western Digital attribute. | |
Induced Op-Vibration Detection (ID 0xBA): Western Digital attribute. | |
Reported Uncorrectable Errors (ID 0xBB): A number of errors that could not be r… | |
Command Timeout (ID 0xBC): A number of aborted operations due to HDD timeout. N… | |
High Fly Writes (ID 0xBD): HDD producers implement a Fly Height Monitor that at… | |
Airflow Temperature (WDC) (ID 0xBE): Airflow temperature on Western Digital HDs… | |
Temperature Difference from 100 (ID 0xBE): Value is equal to (100 – temp. °C… | |
G-sense error rate (0xBF): The number of errors resulting from externally-induc… | |
Power-off Retract Count / Emergency Retract Cycle count (ID 0xC0): Number of ti… | |
Load Cycle Count / Load/Unload Cycle Count (ID 0xC1): Count of load/unload cycl… | |
Temperature (ID 0xC2): Current internal temperature. | |
Hardware ECC Recovered (ID 0xC3): The raw value has different structure for dif… | |
Reallocation Event Count (ID 0xC4): Count of remap operations. The raw value of… | |
Current Pending Sector Count (ID 0xC5): Number of "unstable" sectors (waiting t… | |
Uncorrectable Sector Count / Off-Line Scan Uncorrectable Sector Count (ID 0xC6)… | |
UltraDMA CRC Error Count (ID 0xC7): The number of errors in data transfer via t… | |
Multi-Zone Error Rate (Western Digital) (ID 0xC8): No description available. | |
Write Error Rate (Fujitsu) (ID 0xC8): The total number of errors when writing a… | |
Soft Read Error Rate (ID 0xC9): Number of off-track errors. | |
Data Address Mark errors (ID 0xCA): Number of Data Address Mark errors (or vend… | |
Run Out Cancel (ID 0xCB): Number of ECC errors | |
Soft ECC Correction (ID 0xCC): Number of errors corrected by software ECC. | |
Thermal Asperity Rate (TAR) (ID 0xCD): Number of errors due to high temperaure. | |
Flying Height (ID 0xCE): Height of heads above the disk surface. A flying heigh… | |
Spin High Current (ID 0xCF): Amount of surge current used to spin up the drive. | |
Spin Buzz (ID 0xD0): Number of buzz routines needed to spin up the drive due to… | |
Offline Seek Performance (ID 0xD1): Drive’s seek performance during its inter… | |
Vibration During Write (ID 0xD3): Vibration During Write. | |
Shock During Write (ID 0xD4): Shock During Write | |
Disk Shift (ID 0xDC): Distance the disk has shifted relative to the spindle (us… | |
G-Sense Error Rate (ID 0xDD): The number of errors resulting from externally-in… | |
Loaded Hours (ID 0xDE): Time spent operating under data load (movement of magne… | |
Load/Unload Retry Count (ID 0xDF): Number of times head changes position. | |
Load Friction (ID 0xE0): Resistance caused by friction in mechanical parts whil… | |
Load/Unload Cycle Count (ID 0xE1): Total number of load cycles | |
Load 'In'-time (ID 0xE2): Total time of loading on the magnetic heads actuator … | |
Torque Amplification Count (ID 0xE3): Number of attempts to compensate for plat… | |
Power-Off Retract Cycle (ID 0xE4): The number of times the magnetic armature wa… | |
GMR Head Amplitude (ID 0xE6): Amplitude of "thrashing" (distance of repetitive … | |
Temperature (ID 0xE7): Current drive temperature. | |
Head Flying Hours (ID 0xF0): Time while head is positioning. | |
Transfer Error Rate (Fujitsu) (ID 0xF0): Counts the number of times the link is… | |
Total LBAs Written (ID 0xF1): Total LBAs Written. | |
Total LBAs Read (ID 0xF2): Total LBAs Read. Note: Some S.M.A.R.T. utilities wil… | |
Read Error Retry Rate (ID 0xFA): Number of errors while reading from a disk. | |
Free Fall Protection (ID 0xFE): Number of "Free Fall Events" detected. | |