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| Chapter 10 Packages |
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| Table 89 S.M.A.R.T. Attributes | (continued) | ||
| ID | ATTRIBUTE | BETTER | DESCRIPTION |
| NAME | |||
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|
|
| |
| 190 | Temperature | High | This indicates the value of 100 - the temperature in degrees Celsius. |
|
| Difference from |
| Manufacturers can set a minimum threshold that corresponds to a |
|
| 100 |
| maximum temperature. |
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|
| 191 | Low | This is the number of mistakes caused by impact loads. | |
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| rate |
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|
| 192 | Low | This is how many times the heads are loaded off the media. | |
|
| Count |
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|
| 193 | Load/Unload | Low | This is the number of load and unload cycles into head landing zone |
|
| Cycle |
| position. |
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| 194 | Temperature | Low | This is the hard drive’s internal temperature. |
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|
| 195 | Hardware ECC | High | This is the time between ECC (Error Correction |
|
| Recovered |
|
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|
| 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 |
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|
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| area. Successful and unsuccessful attempts are both included. |
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| 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 |
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|
|
| is not performed. Only failed write attempts cause a reallocation, not read |
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|
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| errors. This can be difficult to test since only direct I/O writes to the disk |
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| cause reallocations, not cached writes. |
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| 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 |
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|
|
| defects or mechanical subsystem problems. |
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|
| 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). |
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|
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|
| 200 | Write Error Rate | Low | This is the total number of errors in writing sectors. |
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| / |
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|
|
| Error Rate |
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| 201 | Soft Read Error | Low | This is the number of read/write head |
|
| Rate |
| zero, make a backup. |
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| 202 | Data Address | Low | This is the number of data address mark errors. This could also be a |
|
| Mark Errors |
| different, |
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| 203 | Run Out Cancel | Low | This is the number of ECC (Error Correction Code) errors. |
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| 204 | Soft ECC | Low | This is the number of errors corrected by software ECC (Error Correction |
|
| Correction |
| Code). |
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|
| 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 |
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|
|
| surface or contaminant particles. |
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| 206 | Flying Height |
| This is the height of the hard drive’s read/write heads above the disk |
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|
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| surface. |
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| 207 | Spin High |
| This is the quantity of high current used to spin up the drive. |
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| Current |
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| 208 | Spin Buzz |
| This is the number of buzz routines to spin up the drive. When the arm |
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|
|
| holding the read/write heads is stuck, the motor driving it tries to oscillate |
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|
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| the arm to free it. This causes an audible vibration. |
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| 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 |
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| external diagnostic tool has it do. Seek performance is how quickly the |
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| drive moves from track to track. |
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| 263 |
Media Server User’s Guide | |
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