Hitachi HTS541040G9AT00 Specifications - Page 190
Off-Line Data Collection Status
UPC - 000059826569
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Table 120: Status Flag definitions Bit Flag Name Definition 0 Pre-Failure/ Advisory bit 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-Fail- ure condition where imminent loss of data is being pre- dicted. 1 On-Line Collective If bit = 0, the Attribute Value is updated only during bit Off-Line testing. 2-5 Reserved bits 6-15 Reserved bits If bit = 1, the Attribute Value is updated during OnLine testing or during both On-Line and Off-Line testing. May either be 0 or 1 Always 0 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. The maximum value possible is 253 (FDh). 13.39.2.3 Off-Line Data Collection Status The value of this byte defines the current status of the off-line activities of the device. Bit 7 indicates an 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 0-6 represent a hexadecimal status value reported by the device. Value Definition 0 Off-line data collection never started. 2 All segments completed without errors. In this case the current segment pointer is equal to the total segments required. 4 Off-line data collection is suspended by the interrupting command. 5 Off-line data collecting is aborted by the interrupting command. 6 Off-line data collection is aborted with a fatal error. Travelstar 5K100 Hard Disk Drive Specification 176