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