| | 1 | == >> Western-Digital Devices << == |
| | 2 | |
| | 3 | === Interpretation of S.M.A.R.T. Attributes === |
| | 4 | || '''Device Model''' || '''Attributes ID#''' || '''Attributes Name''' || '''Special''' || '''Description''' || |
| | 5 | || || 1 || Raw Read Error Rate || || Frequency of errors while reading raw data from a disk. || |
| | 6 | || || 2 || Throughput Performance || || Average efficiency of a hard disk. || |
| | 7 | || || 3 || Spin Up Time || || Time needed by spindle to spin-up. || |
| | 8 | || || 4 || Start/Stop Count || || Number of start/stop cycles of spindle. || |
| | 9 | || || 5 || Reallocated Sector Count || || Quantity of remapped sectors. || |
| | 10 | || || 6 || Start/Stop Count || || Number of start/stop cycles of spindle. || |
| | 11 | || || 7 || Seek Error Rate || || Frequency of errors appearance while positioning. || |
| | 12 | || || 8 || Seek Time Performance || || The average efficiency of operations while positioning. || |
| | 13 | || || 9 || Power-On Hours Count || || Quantity of elapsed hours in the switched-on state. || |
| | 14 | || || || || || || |
| | 15 | || || '''10''' || '''Spin-up Retry Count''' || (!) || Number of retry attempts, that were needed to reach the operational speed of the spindle. || |
| | 16 | || || |||||| ''Western Digital firmware initializes SMART Attribute 10 after either 120 spin-ups or 8 power-on hours. Until that time, they have the uninitialized value 253.'' || |
| | 17 | || || || || || || |
| | 18 | || || '''11''' || '''Calibration Retry Count''' || (!) || Number of attempts to calibrate a drive. || |
| | 19 | || || |||||| ''Western Digital firmware initializes SMART Attribute 11 after either 120 spin-ups or 8 power-on hours. Until that time, they have the uninitialized value 253.'' || |
| | 20 | || || || || || || |
| | 21 | || || 12 || Power Cycle Count || || Number of complete power on/off cycles of hard disk. || |
| | 22 | || || 13 || Soft Read Error Rate || || Frequency of program errors appearance while reading data from a disk. || |
| | 23 | || ''<unknown>'' || 192 || Power-Off Retract Cycle || || Number of power-off cycles. || |
| | 24 | || || 193 || Load/Unload Cycle Count || || Number of cycles into Landing Zone position. || |
| | 25 | || not all (which?) || 194 || HDA Temperature || || Temperature of a Hard Disk Assembly. || |
| | 26 | || ''<unknown>'' || 195 || Hardware ECC Recovered || || Frequency of the on the fly errors. || |
| | 27 | || not all (which?) || 196 || Reallocated Event Count || || Number of remap operations. That means replacing a bad sector by one from the spare area. || |
| | 28 | || || 197 || Current Pending Sector Count || || Current number of unstable sectors (waiting for remapping). || |
| | 29 | || ''<unknown>'' || 198 || Offline Scan Uncorrectable Count || || Number of uncorrected errors. || |
| | 30 | || || || || || || |
| | 31 | || not all (which?) || '''199''' || '''UltraDMA CRC Error Rate''' || (!) || Total number of errors CRC during UltraDMA mode. || |
| | 32 | || || |||||| ''Western Digital firmware initializes SMART Attribute 199 after either 120 spin-ups or 8 power-on hours. Until that time, they have the uninitialized value 253.'' || |
| | 33 | || || || || || || |
| | 34 | || || 200 || Write Error Rate || || Multi Zone Error Rate. || |
| | 35 | || || 201 || Soft Read Error Rate || || Frequency of program errors appearance while reading data from a disk. || |
| | 36 | || ''<unknown>'' || 202 || Data Address Mark Errors || || Number of Data Address Mark (DAM) errors (or) vendor-specific. || |
| | 37 | || ''<unknown>'' || 203 || Run Out Cancel || || Number of the ECC errors (Maxtor: ECC Errors). || |
| | 38 | || ''<unknown>'' || 204 || Soft ECC Correction || || Quantity of errors corrected by software ECC. || |
| | 39 | || ''<unknown>'' || 205 || Thermal Asperity Rate (TAR) || || Frequency of the thermal asperity errors. || |
| | 40 | || ''<unknown>'' || 206 || Flying Height || || The height of the disk heads above the disk surface. || |
| | 41 | || ''<unknown>'' || 207 || Spin High Current || || Amount of high current used to spin up the drive. || |
| | 42 | || ''<unknown>'' || 208 || Spin Buzz || || Number of buzz routines to spin up the drive. || |
| | 43 | || ''<unknown>'' || 209 || Offline Seek Performance || || Drive's seek performance during offline operations. (Relation to Seek Time Performance - #8?) || |
| | 44 | || ''<unknown>'' || 220 || Disk Shift || || Shift of disk is possible as a result of strong shock loading in the store, as a result of it's falling or for other reasons (sometimes: Temperature) || |
| | 45 | || ''<unknown>'' || 221 || G-Sense Error Rate || || Frequency of mistakes as a result of impact loads as detected by a shock sensor(?). || |
| | 46 | || ''<unknown>'' || 222 || Loaded Hours || || Number of hours in general operational state. || |
| | 47 | || ''<unknown>'' || 223 || Load/Unload Retry Count || || Loading on drive caused by numerous recurrences of operations, like reading, recording, positioning of heads, etc. || |
| | 48 | || ''<unknown>'' || 224 || Load Friction || || Load on drive caused by friction in mechanical parts of the store. || |
| | 49 | || ''<unknown>'' || 225 || Load/Unload Cycle Count || || Number of cycles into Landing Zone position. || |
| | 50 | || ''<unknown>'' || 226 || Load-in Time || || General time of loading for drive. || |
| | 51 | || ''<unknown>'' || 227 || Torque Amplification Count || || Quantity efforts of the rotating moment of a drive. || |
| | 52 | || ''<unknown>'' || 228 || Power-Off Retract Cycle || || Number of power-off cycles (Fujitsu: Emergency Retract Cycle Count). || |
| | 53 | || ''<unknown>'' || 230 || GMR Head Amplitude || || Amplitude of heads trembling (GMR-head) in running mode. || |
| | 54 | || ''<unknown>'' || 231 || Temperature || || Temperature of a drive. || |
| | 55 | || ''<unknown>'' || 240 || Head Flying Hours || || Time while head is positioning. || |
| | 56 | || ''<unknown>'' || 250 || Read Error Retry Rate || || Number of errors while reading from a disk. || |
| | 57 | |
| | 58 | '''References:''' http://www.ariolic.com/activesmart/smart-attributes/ |
