>> IBM (Hitachi) Devices <<

Interpretation of S.M.A.R.T. Attributes

Device Model Attributes ID# Attributes Name Description
1 Raw Read Error Rate Frequency of errors while reading raw data from a disk.
2 Throughput Performance Average efficiency of a hard disk.
3 Spin Up Time Time needed by spindle to spin-up.
4 Start/Stop? Count Number of start/stop cycles of spindle.
5 Reallocated Sector Count Quantity of remapped sectors.
6 Start/Stop? Count Number of start/stop cycles of spindle.
7 Seek Error Rate Frequency of errors appearance while positioning.
8 Seek Time Performance The average efficiency of operations while positioning.
9 Power-On Hours Count Quantity of elapsed hours in the switched-on state.
10 Spin-up Retry Count Number of retry attempts, that were needed to reach the operational speed of the spindle.
11 Calibration Retry Count Number of attempts to calibrate a drive.
12 Power Cycle Count Number of complete power on/off cycles of hard disk.
13 Soft Read Error Rate Frequency of program errors appearance while reading data from a disk.
191 G-Sense Error Rate Frequency of mistakes as a result of impact loads as detected by a shock sensor(?).
not all (which?) 192 Power-Off Retract Cycle Number of power-off cycles.
193 Load/Unload? Cycle Count Number of cycles into Landing Zone position.
194 HDA Temperature Temperature of a Hard Disk Assembly.
<unknown> 195 Hardware ECC Recovered Frequency of the on the fly errors.
196 Reallocated Event Count Number of remap operations. That means replacing a bad sector by one from the spare area.
197 Current Pending Sector Count Current number of unstable sectors (waiting for remapping).
<unknown> 198 Offline Scan Uncorrectable Count Number of uncorrected errors.
199 UltraDMA CRC Error Rate Total number of errors CRC during UltraDMA mode.
200 Write Error Rate Number of errors while writing to disk (or) flying height (?)
201 Soft Read Error Rate Frequency of program errors appearance while reading data from a disk.
<unknown> 202 Data Address Mark Errors Number of Data Address Mark (DAM) errors (or) vendor-specific.
<unknown> 203 Run Out Cancel Number of the ECC errors (Maxtor: ECC Errors).
<unknown> 204 Soft ECC Correction Quantity of errors corrected by software ECC.
<unknown> 205 Thermal Asperity Rate (TAR) Frequency of the thermal asperity errors.
<unknown> 206 Flying Height The height of the disk heads above the disk surface.
<unknown> 207 Spin High Current Amount of high current used to spin up the drive.
<unknown> 208 Spin Buzz Number of buzz routines to spin up the drive.
<unknown> 209 Offline Seek Performance Drive's seek performance during offline operations. (Relation to Seek Time Performance - #8?)
<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)
<unknown> 221 G-Sense Error Rate Frequency of mistakes as a result of impact loads as detected by a shock sensor(?).
<unknown> 222 Loaded Hours Number of hours in general operational state.
<unknown> 223 Load/Unload? Retry Count Loading on drive caused by numerous recurrences of operations, like reading, recording, positioning of heads, etc.
<unknown> 224 Load Friction Load on drive caused by friction in mechanical parts of the store.
<unknown> 225 Load/Unload? Cycle Count Number of cycles into Landing Zone position.
<unknown> 226 Load-in Time General time of loading for drive.
<unknown> 227 Torque Amplification Count Quantity efforts of the rotating moment of a drive.
<unknown> 228 Power-Off Retract Cycle Number of power-off cycles.
<unknown> 230 GMR Head Amplitude Amplitude of heads trembling (GMR-head) in running mode.
<unknown> 231 Temperature Temperature of a drive.
<unknown> 240 Head Flying Hours Time while head is positioning.
<unknown> 250 Read Error Retry Rate Number of errors while reading from a disk.

References: http://www.ariolic.com/activesmart/smart-attributes/

Last modified 5 years ago Last modified on 01/04/2010 07:54:22 PM