Table of Contents
Attribute ID Numbers: Any nonzero value in the Attribute ID Number indicates an active attribute. The device
supports following Attribute ID Numbers.
ID
0
Indicates that this entry in the data structure is not used
1
Raw Read Error Rate
2
Throughput Performance
3
Spin Up Time
4
Start/Stop Count
5
Reallocated Sector Count
7
Seek Error Rate
8
Seek Time Performance
9
Power-On Hours Count
10
Spin Retry Count
12
Device Power Cycle Count
192
Power Off Retract Count
193
Load Cycle Count
194
Device Temperature
196
Reallocation Event Count
197
Current Pending Sector Count
198
Off-Line Scan Uncorrectable Sector Count
199
Ultra DMA CRC Error Count
Status
Flag Definition
Bit
Definition
0
Pre-failure/advisory bit
0
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
1
On-line Collective bit
0
The attribute value is updated only during Off-line testing.
1
The attribute value is updated during On-line testing or during both On-line and Off-line testing.
2 - 5
Vendor specific
6-15
Reserved (0)
Normalized values: The device performs conversion of the raw Attribute Values to transform them into normal-
ized values which the host can then compare with the Threshold values. A Threshold is the excursion limit for a
normalized Attribute Value.
12.43.2.3 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.
Attribute Name
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.
Deskstar T7K250 Hard Disk Drive Specification
205
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