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returnL"Lower raw value is better.\r\nVendor specific raw value. Stores data related to the rate of hardware read errors that occurred when reading data from a disk surface. The raw value has different structure for different vendors and is often not meaningful as a decimal number.";
1517
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caseSMART_ATTRIBUTE_ID_THROUGHPUT_PERFORMANCE:
1518
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returnL"Higher raw value is better.\r\nOverall (general) throughput performance of a hard disk drive. If the value of this attribute is decreasing there is a high probability that there is a problem with the disk.";
1519
-
caseSMART_ATTRIBUTE_ID_SPIN_UP_TIME:
1520
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returnL"Lower raw value is better.\r\nAverage time of spindle spin up (from zero RPM to fully operational [milliseconds]).";
1521
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caseSMART_ATTRIBUTE_ID_START_STOP_COUNT:
1522
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returnL"A tally of spindle start/stop cycles.\r\nThe spindle turns on, and hence the count is increased, both when the hard disk is turned on after having before been turned entirely off (disconnected from power source) and when the hard disk returns from having previously been put to sleep mode.";
1523
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caseSMART_ATTRIBUTE_ID_REALLOCATED_SECTORS_COUNT:
1524
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returnL"Lower raw value is better.\r\nCount of reallocated sectors. When the hard drive finds a read/write/verification error, it marks that sector as \"reallocated\" and transfers data to a special reserved area (spare area). This process is also known as remapping, and reallocated sectors are called \"remaps\". The raw value normally represents a count of the bad sectors that have been found and remapped. Thus, the higher the attribute value, the more sectors the drive has had to reallocate. This allows a drive with bad sectors to continue operation; however, a drive which has had any reallocations at all is significantly more likely to fail in the near future. While primarily used as a metric of the life expectancy of the drive, this number also affects performance. As the count of reallocated sectors increases, the read/write speed tends to become worse because the drive head is forced to seek to the reserved area whenever a remap is accessed. If sequential access speed is critical, the remapped sectors can be manually marked as bad blocks in the file system in order to prevent their use.";
1525
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caseSMART_ATTRIBUTE_ID_READ_CHANNEL_MARGIN:
1526
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returnL"Margin of a channel while reading data.\r\nThe function of this attribute is not specified.";
1527
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caseSMART_ATTRIBUTE_ID_SEEK_ERROR_RATE:
1528
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returnL"Vendor specific raw value.\r\nRate of seek errors of the magnetic heads. If there is a partial failure in the mechanical positioning system, then seek errors will arise. Such a failure may be due to numerous factors, such as damage to a servo, or thermal widening of the hard disk. The raw value has different structure for different vendors and is often not meaningful as a decimal number.";
1529
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caseSMART_ATTRIBUTE_ID_SEEK_TIME_PERFORMANCE:
1530
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returnL"Average performance of seek operations of the magnetic heads.\r\nIf this attribute is decreasing, it is a sign of problems in the mechanical subsystem.";
1531
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caseSMART_ATTRIBUTE_ID_POWER_ON_HOURS:
1532
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returnL"Count of hours in power-on state.\r\nThe raw value of this attribute shows total count of hours (or minutes, or seconds, depending on manufacturer) in power-on state.\r\nBy default, the total expected lifetime of a hard disk in perfect condition is defined as 5 years(running every day and night on all days).This is equal to 1825 days in 24 / 7 mode or 43800 hours.\r\nOn some pre-2005 drives, this raw value may advance erratically and/or \"wrap around\" (reset to zero periodically).";
1533
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caseSMART_ATTRIBUTE_ID_SPIN_RETRY_COUNT:
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returnL"Count of retry of spin start attempts.\r\nThis attribute stores a total count of the spin start attempts to reach the fully operational speed (under the condition that the first attempt was unsuccessful). An increase of this attribute value is a sign of problems in the hard disk mechanical subsystem.";
1535
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caseSMART_ATTRIBUTE_ID_CALIBRATION_RETRY_COUNT:
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returnL"This attribute indicates the count that recalibration was requested (under the condition that the first attempt was unsuccessful). An increase of this attribute value is a sign of problems in the hard disk mechanical subsystem.";
1537
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caseSMART_ATTRIBUTE_ID_POWER_CYCLE_COUNT:
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returnL"This attribute indicates the count of full hard disk power on/off cycles.";
1539
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caseSMART_ATTRIBUTE_ID_SOFT_READ_ERROR_RATE:
1540
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returnL"Uncorrected read errors reported to the operating system.";
returnL"Western Digital, Samsung or Seagate attribute: Total number of data blocks with detected, uncorrectable errors encountered during normal operation.";
1543
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caseSMART_ATTRIBUTE_ID_END_TO_END_ERROR:
1544
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returnL"This attribute is a part of Hewlett-Packard's SMART IV technology, as well as part of other vendors' IO Error Detection and Correction schemas, and it contains a count of parity errors which occur in the data path to the media via the drive's cache RAM.";
returnL"The count of errors that could not be recovered using hardware ECC (see attribute 195).";
1551
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caseSMART_ATTRIBUTE_ID_COMMAND_TIMEOUT:
1552
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returnL"The count of aborted operations due to HDD timeout. Normally this attribute value should be equal to zero and if the value is far above zero, then most likely there will be some serious problems with power supply or an oxidized data cable.";
1553
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caseSMART_ATTRIBUTE_ID_HIGH_FLY_WRITES:
1554
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returnL"This attribute indicates the total count of the recording head flying outside its normal operating range. If an unsafe fly height condition is encountered, the write process is stopped, and the information is rewritten or reallocated to a safe region of the hard drive. This attribute indicates the count of these errors detected over the lifetime of the drive.";
returnL"Airflow temperature. Value is equal to (100?temp. °C), allowing manufacturer to set a minimum threshold which corresponds to a maximum temperature.";
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