Table 116. Status Flag Definitions - Hitachi 7K100 - Travelstar - Hard Drive Specifications

Table 116: Status Flag definitions
Bit Flag Name
0 Pre-Failure/
Advisory bit
1 On-Line Collective
bit
2-5 Reserved bits
6-15 Reserved bits
Normalized values: The device will perform conversion of the raw Attribute Values to transform them into nor-
malized 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.
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.
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 test-
ing.
May either be 0 or 1
Always 0
Travelstar 7K100 Hard Disk Drive Specification
171
Definition