S.M.A.R.T.

S.M.A.R.T.
S.M.A.R.T
smart

Attribute ID: 190 (0xBE)

Hard drives, supporting this attribute

Seagate, Samsung, Western Digital

Description

Temperature Difference from 100 (Airflow Temperature) S.M.A.R.T. parameter indicates the temperature of the air inside the Seagate and Samsung hard disk housing. The value is equal to [100 – specified by manufacturer temperature °C], which allows setting the minimum threshold.

Attribute ID: 194 (0xC2)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

HDA Temperature S.M.A.R.T. parameter indicates a hard disk drive current internal temperature. The raw value of this attribute shows built-in heat sensor registrations (in degrees centigrade).

Attribute ID: 226 (0xE2)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Load-in Time S.M.A.R.T. parameter indicates total time the heads are loaded.

Attribute ID: 227 (0xE3)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Torque Amplification Count S.M.A.R.T. parameter indicates a number of attempts to compensate for platter speed variations.

Attribute ID: 228 (0xE4)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Power-Off Retract Cycle S.M.A.R.T. parameter indicates a number of times the head was retracted as a result of power loss.

Attribute ID: 230 (0xE6)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

GMR Head Amplitude S.M.A.R.T. parameter indicates a head moving distances between operations.

Attribute ID: 241 (0xF1)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Total LBAs Written S.M.A.R.T. parameter indicates a total number of LBAs written.

Attribute ID: 240 (0xF0)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Head Flying Hours / Transfer Error Rate (Fujitsu) S.M.A.R.T. parameter indicates time spent during the positioning of the drive heads.

Attribute ID: 242 (0xF2)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Total LBAs Read S.M.A.R.T. parameter indicates a total number of LBAs read.

Attribute ID: 250 (0xFA)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Read Error Retry Rate S.M.A.R.T. parameter indicates a number of errors found during reading a sector from disk surface.

Attribute ID: 209 (0xD1)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Offline Seek Performance S.M.A.R.T. parameter indicates the seek performance of the hard drive during internal self tests.

Attribute ID: 211 (0xD3)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Vibration During Write S.M.A.R.T. parameter indicates a vibration encountered during write operations.

Attribute ID: 220 (0xDC)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Disk Shift S.M.A.R.T. parameter indicates that a distance of the disk has shifted relative to the spindle, which could be caused by a mechanical shock or high temperature.

Attribute ID: 223 (0xDF)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Load/Unload Retry Count S.M.A.R.T. parameter indicates a number of drive head enters/leaves the data zone.

Attribute ID: 222 (0xDE)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Loaded Hours S.M.A.R.T. parameter indicates a number of powered on hours. This value is constantly increasing (once per every hour).

Attribute ID: 224 (0xE0)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Load Friction S.M.A.R.T. parameter indicates the rate of friction between mechanical parts of the hard disk. The increasing value means there is a problem with the mechanical subsystem of the drive.

Attribute ID: 225 (0xE1)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Load/Unload Cycle Count S.M.A.R.T. parameter indicates a total number of load cycles.

Attribute ID: 202 (0xCA)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Data Address Mark errors S.M.A.R.T. parameter indicates the number of incorrect or invalid address marks.

Attribute ID: 204 (0xCC)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Soft ECC Correction S.M.A.R.T. parameter indicates the number of errors corrected by the internal error correction mechanism.

Attribute ID: 203 (0xCB)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Run Out Cancel S.M.A.R.T. parameter indicates that an invalid error correction checksum was found during error correction.

Attribute ID: 206 (0xCE)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Flying Height S.M.A.R.T. parameter indicates the height of heads above the disk surface. The low value of this parameter increases the chances of a head crash while a flying height that is too high increases the chances of a read/write error.

Attribute ID: 207 (0xCF)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Spin High Current S.M.A.R.T. parameter indicates the current needed to spin up the drive.

Attribute ID: 208 (0xD0)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)

Description

Spin Buzz S.M.A.R.T. parameter indicates the number of retries during spin up because of low current available.

Attribute ID: 191 (0xBF)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu, Maxtor, Western Digital

Description

G-sense error rate S.M.A.R.T. parameter indicates the number of errors caused by externally-induced shock or vibration.

Attribute ID: 12 (0x0C)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu, Maxtor, Western Digital

Description

Power Cycle Count S.M.A.R.T. parameter is an informational parameter and indicates the count of full hard disk power on/off cycles.

Attribute ID: 7 (0x07)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu, Maxtor, Western Digital

Description

Seek Error Rate S.M.A.R.T. parameter indicates a rate of seek errors of the magnetic heads. In case of a failure in the mechanical positioning system, a servo damage or a thermal widening of the hard disk, seek errors arise.

Attribute ID: 9 (0x09)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu, Maxtor, Western Digital

Description

Power-On Hours (POH) S.M.A.R.T. parameter indicates a count of hours in power-on state. The value of this attribute shows total count of hours (or minutes, or seconds, depending on manufacturer) in power-on state. A decrease of this attribute value to the critical level (threshold) indicates a decrease of the MTBF (Mean Time Between Failures).

Attribute ID: 1 (0x01)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu, Maxtor, Western Digital

Attribute ID: 4 (0x04)

Hard drives, supporting this attribute

Samsung, Seagate, IBM (Hitachi), Fujitsu, Maxtor, Western Digital

Description

Start/Stop Count S.M.A.R.T. parameter indicates a count of hard disk spindle start/stop cycles.

Each hard disk has its own limited number of these cycles depending on manufacturer. The maximum number of spinups/spindowns is called a threshold. When the parameter’s value drops down to the threshold, it means a hard disk is unhealthy.

General description of S.M.A.R.T. monitoring

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