Hitachi HTS541640J9SA00 manual Off-Line Data Collection Status, Self-test execution status

Travelstar 5K160 (SATA) Hard Disk Drive Specification

Bit

0

1

Flag Name

Pre-Failure/Advisory bit

On-Line Collective bit

Definition

If bit = 0, an Attribute Value less than or equal to its corresponding Attribute Threshold indicates an Advisory condition where the usage or age of the device has exceeded its intended design life period.

If bit = 1, an Attribute Value less than or equal to its corresponding Attribute Threshold indicates a Pre-Failure condition where imminent loss of data is being predicted.

If bit = 0, the Attribute Value is updated only during Off-Line testing.

If bit = 1, the Attribute Value is updated during On-Line testing or during both On-Line and Off-Line testing.

2-5	Reserved bits	may either 0 or 1
6-15	Reserved bits	Always 0

Figure 85 Status Flag Definitions

Normalized Values: The device will perform conversion of the raw Attribute Values to transform them into normalized values, which the host can then compare with the Threshold values. A Threshold is the excursion limit for a normalized Attribute Value. In normalizing the raw data, the device will perform any necessary statistical validity checks to ensure that an instantaneous raw value is not improperly reflected in the normalized Attribute Value (i.e., one read error in the first 10 reads being interpreted as exceeding the read error rate threshold when the subsequent 1 billion reads all execute without error). The end points for the normalized values for all Attributes will be 1 (01h) at the low end, and 100 (64h) at the high end for the device. For Performance and Error Rate Attributes, values greater than 100 are also possible, up to a maximum value of 253 (FDh).

14.40.2.3Off-Line Data Collection Status

The value of this byte defines the current status of the off-line activities of the device. Bit 7 indicates Automatic Off-Line Data Collection Status.

Bit 7	Automatic Off-Line Data Collection Status
0	Automatic Off-Line Data Collection is disabled.
1	Automatic Off-Line Data Collection is enabled.

Bits 0 thru 6 represents a hexadecimal status value reported by the device.

Value Definition

0Off-line data collection never started

2All segments completed without errors. In this case, current segment pointer equals to total segments

required.

4Off-line data collection suspended by interrupting command

5Off-line data collecting aborted by interrupting command

6Off-line data collection aborted with fatal error

14.40.2.4Self-test execution status

Bit Definition

0-3Percent Self-test remaining

An approximation of the percent of the self-test routine remaining until completion in ten percent increments. Valid values are 0 through 9.

4-7Current Self-test execution status

0The self-test routine completed without error or has never been run

1The self-test routine aborted by the host

2The self-test routine interrupted by the host with a hard or soft reset

3The device was unable to complete the self-test routine due to a fatal error or unknown test error

4The self-test routine completed with unknown element failure

5The self-test routine completed with electrical element failure

6The self-test routine completed with servo element failure

7The self-test routine completed with read element failure

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