|
|
|
| Chapter 11 Package Management |
|
|
|
|
|
| Table 90 S.M.A.R.T. Attributes | (continued) | ||
| ID | ATTRIBUTE | BETTER | DESCRIPTION |
| NAME | |||
|
|
|
| |
| 194 | Temperature | Low | This is the hard drive’s internal temperature. |
|
|
|
|
|
| 195 | Hardware ECC | High | This is the time between ECC (Error Correction |
|
| Recovered |
|
|
|
|
|
|
|
| 196 | Reallocation | Low | This is the total number of reallocation (remap) operations. The raw value |
|
| Event Count |
| is the total attempts to move data from reallocated sectors to a spare |
|
|
|
| area. Successful and unsuccessful attempts are both included. |
|
|
|
|
|
| 197 | Current Pending | Low | This is the number of unstable sectors awaiting reallocation. If the sector |
|
| Sector Count |
| is later successfully written or read, this value decreases and reallocation |
|
|
|
| is not performed. Only failed write attempts cause a reallocation, not read |
|
|
|
| errors. This can be difficult to test since only direct I/O writes to the disk |
|
|
|
| cause reallocations, not cached writes. |
|
|
|
|
|
| 198 | Uncorrectable | Low | This is the number of errors reading or writing a sector that were not |
|
| Sector Count |
| correctable. An increase in this value is an indicator of disk surface |
|
|
|
| defects or mechanical subsystem problems. |
|
|
|
|
|
| 199 | UltraDMA CRC | Low | This is the number of data transfer errors through the interface cable |
|
| Error Count |
| according to the ICRC (Interface Cyclic Redundancy Check). |
|
|
|
|
|
| 200 | Write Error Rate | Low | This is the total number of errors in writing sectors. |
|
| / |
|
|
|
| Error Rate |
|
|
|
|
|
|
|
| 201 | Soft Read Error | Low | This is the number of read/write head |
|
| Rate |
| zero, make a backup. |
|
|
|
|
|
| 202 | Data Address | Low | This is the number of data address mark errors. This could also be a |
|
| Mark Errors |
| different, |
|
|
|
|
|
| 203 | Run Out Cancel | Low | This is the number of ECC (Error Correction Code) errors. |
|
|
|
|
|
| 204 | Soft ECC | Low | This is the number of errors corrected by software ECC (Error Correction |
|
| Correction |
| Code). |
|
|
|
|
|
| 205 | Thermal Asperity | Low | This is the number of thermal asperity errors. Thermal asperity is a read |
|
| Rate (TAR) |
| signal spike caused by sensor temperature rise due to touching the disk |
|
|
|
| surface or contaminant particles. |
|
|
|
|
|
| 206 | Flying Height |
| This is the height of the hard drive’s read/write heads above the disk |
|
|
|
| surface. |
|
|
|
|
|
| 207 | Spin High |
| This is the quantity of high current used to spin up the drive. |
|
| Current |
|
|
|
|
|
|
|
| 208 | Spin Buzz |
| This is the number of buzz routines to spin up the drive. When the arm |
|
|
|
| holding the read/write heads is stuck, the motor driving it tries to oscillate |
|
|
|
| the arm to free it. This causes an audible vibration. |
|
|
|
|
|
| 209 | Offline Seek |
| This is the hard drive’s seek performance during offline operations. Offline |
|
| Performance |
| operations are tests the drive does itself as opposed to those that an |
|
|
|
| external diagnostic tool has it do. Seek performance is how quickly the |
|
|
|
| drive moves from track to track. |
|
|
|
|
|
| 220 | Disk Shift | Low | This is how far the disk has moved relative to the spindle (this kind of |
|
|
|
| shift is usually due to shock). |
|
|
|
|
|
| 221 | Low | This is the number of errors that have resulted from external vibration | |
|
| Rate |
| and shock. |
|
|
|
|
|
| 222 | Loaded Hours |
| This is how long the hard drive has operated under data load (this |
|
|
|
| requires movement of the magnetic head armature). |
|
|
|
|
|
| 223 | Load/Unload |
| This is how many time the magnetic head has changed position. |
|
| Retry Count |
|
|
|
|
|
|
|
| 224 | Load Friction | Low | This is resistance caused by friction in mechanical parts during operation. |
|
|
|
|
|
| 277 |
Media Server User’s Guide | |
|
|