Samsung 3.5" hard disk drives Manual De Usuario

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DISK DRIVE OPERATION 
 
SpinPoint V40 Product Manual
 
73
 
If the device is in the process of performing its off-line data collection activities and is interrupted by a 
STANDBY IMMEDIATE command from the host, the device shall suspend or abort its off-line data 
collection activities, and service the host within two seconds after receipt of the command. After receiving a 
new command that causes the device to exit a power saving mode, the device shall initiate or resume off-line 
data collection activities without any additional commands from the host unless the device aborted these 
activities. 
 
If the device is in the process of performing its off-line data collection activities and is interrupted by a 
SMART DISABLE OPERATIONS command from the host, the device shall suspend or abort its off-line 
data collection activities and service the host within two seconds after receipt of the command. Upon receipt 
of the next SMART ENABLE OPERATIONS command the device may, after the next vendor specified 
event, either re-initiate its off-line data collection activities or resume those activities from where they had 
been previously suspended. 
 
If the device is in the process of performing its off-line data collection activities and is interrupted by a 
SMART EXECUTE OFF-LINE IMMEDIATE command from the host, the device shall abort its off-line 
data collection activities and service the host within two seconds after receipt of the command. The device 
shall then re-initiate its off-line data collection activities in response to the new EXECUTE OFF-LINE 
IMMEDIATE command. 
 
6.4.24.5 
Smart read data (D0h) 
 
This command returns the Device SMART data structure to the host. 
 
Table 6-11 defines the 512 bytes that make up the device SMART data structure.  
 
Table 6-11 Device SMART data structure 
Byte 
F/V 
 Descriptions 
0-361 
 Vendor specific 
362 V 
 
Off-line data collection status 
363 
 Vendor specific 
364-365 
 Total time in seconds to complete off-line data collection activity 
366 
 Vendor specific 
367 F 
 
Off-line data collection capability 
368-369 
 SMART capability 
370-385 R 
 
Reserved 
386-510 
 Vendor specific 
511 
 Data structure checksum 
Key: 
F = the content of the byte is fixed and does not change. 
V = the content of the byte is variable and may change depending on the state of the device or  the 
commands executed by the device. 
X = the content of the byte is vendor specific and may be fixed or variable. 
R = the content of the byte is reserved and shall be zero.        
 
The value of the off-line data collection status byte defines the current status of the off-line activities of the 
device. Table 6-12 lists the values and their respective definitions.