The Committee chose IntelliSafe's approach, as it provided more flexibility. From a legal perspective, the term S. Archived from the original PDF on Archived from the original PDF on 12 June Later, another variant, which was named IntelliSafe, was created by computer manufacturer Compaq and disk drive manufacturers Seagate , Quantum , and Conner.
From Wikipedia, the free encyclopedia. Count of attempts to compensate for platter speed variations. Retrieved 20 July Retrieved 3 April This timeout controls how often the drive parks its heads and enters a low power consumption state. Average performance of seek operations of the magnetic heads.
Würzburg – Wikipedia
The Newly Added Bad Flash Block attribute indicates the total number of bad flash blocks the drive detected since it was first initialized in manufacturing. Vendor specific raw value. A recording of shock encountered during write operations. HDD manufacturers implement a flying height sensor that attempts to provide additional protections for write operations by detecting when a recording head is flying outside its normal operating range. Its primary function is to detect and report various indicators of drive reliability with the intent of anticipating imminent hardware failures.
From Figure 8 we see a drastic and quick decrease in survival probability after the first scan error left graph. Count of errors corrected by the internal error correction software. Count of hours in power-on state. The number of power-off cycles which are counted whenever there is a retract event and the heads are loaded off of the media such as when the machine is powered down, put to sleep, or is idle. Kingston Counts the number of flash erase failures. Even with a hard drive and interface that implements the specification, the computer's operating system may not see the S.
Kingston The total number of flash program operation failures since the drive was deployed. This attribute returns the total number of Flash erase operation failures since the drive was deployed. The count of aborted operations due to HDD timeout.
This attribute indicates the count that recalibration was requested under the condition that the first attempt was unsuccessful. This attribute is identical to attribute Reallocated Sectors Count Knowledge Base. Count of buzz routines needed to spin up the drive due to insufficient power. Attributes were included in some drafts of the ATA standard, but were removed before the standard became final.
Overall general throughput performance of a hard disk drive. Archived from the original PDF on 12 June Alternatively, if a drive has experienced problems in the past, but the sensors no longer detect such problems, the S.
Retrieved 8 September This attribute is identical to attribute Reallocated Sectors Count Knowledge Base. HDD manufacturers implement a flying height sensor that attempts to provide additional protections for write operations by detecting when a recording head is flying outside its normal operating range. It provides only two values: Manufacturers that have implemented at least one S.
Overall general throughput performance of a hard disk drive. More detail on the health of the drive may be obtained by examining the S. The unification was at the protocol level with the host. Compaq placed IntelliSafe into the public domain on 12 May Views Read Edit View history.
Because of this the specifications of S. However, some older drives may instead report raw Temperature identical to 0xC2 or Temperature minus 50 here. Erase Fail Count chip . The raw value represents a count of the bad sectors that have been found and remapped. Threshold Exceeds Condition TEC is an estimated date when a critical drive statistic attribute will reach its threshold value.
- It provides only two values: The most basic information that S. Read errors on a sector will not remap the sector immediately since the correct value cannot be read and so the value to remap is not known, and also it might become readable later ; instead, the drive firmware remembers that the sector needs to be remapped, and will remap it the next time it's written. One way that unreadable sectors may be created, even when the drive is functioning within specification, is through a sudden power failure while the drive is writing. Total time of loading on the magnetic heads actuator time not spent in parking area. Depending on the type of interface being used, some S.
- To predict the date, the drive tracks the rate at which the attribute changes. A subsequent version of the standard improved failure prediction by adding an automatic off-line read scan to monitor additional operations. An increase of this attribute value is a sign of problems in the hard disk mechanical subsystem. Distance the disk has shifted relative to the spindle usually due to shock or temperature.
The self-test routines may be used to detect any unreadable sectors on the disk, so that they may be restored from back-up sources for example, from other disks in a RAID. Because of this the specifications of S. Retrieved 12 July As manufacturers do not necessarily agree on precise attribute definitions and measurement units, the following list of attributes is a general guide only. Count of remap operations.
Count of retry of spin start attempts. A field study at Google  covering over , consumer-grade drives from December to August found correlations between certain S. Overall general throughput performance of a hard disk drive. The count of errors that could not be recovered using hardware ECC see attribute
Die Partnersuche ab 40 für ein gemeinsames Leben!
This attribute is identical to attribute Communications between the physical unit and the monitoring software were limited to a binary result: The raw value of this attribute shows total count of hours or minutes, or seconds, depending on manufacturer in power-on state. Time spent operating under data load movement of magnetic head armature. A recording of a vibration encountered during write operations.