[SOLVED] "Command Timeout" and "Head Flying Hours" concerns ?

Nov 25, 2021
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I have 2 of my Seagate external HDDs with high numbers in "Command Timeout" and "Head Flying Hours" raw values. Should I be worried about these? Please look at the images below.

COMMAND TIMEOUT:

Seagate 1
Current Worst Threshold Raw Values
100 100 0 000000000002

Seagate 2
Current Worst Threshold Raw Values
100 99 0 000000000004

HEAD FLYING HOURS:

Seagate 1
Current Worst Threshold Raw Values
100 253 0 BAE20000003E

Seagate 2
Current Worst Threshold Raw Values
100 253 0 BD69000000C4

Seagate 1
View: https://imgur.com/a/3yAmW4q


Seagate 2
View: https://imgur.com/a/99PExHi


Thanks in advance!
 
Last edited by a moderator:
Solution
The number of Command Timeouts is actually 2 and 4.

The Head Flying Hours (and Power On Hours) is a 56-bit value. CrystalDiskInfo only shows 48 bits, whereas HDDScan shows all 56 bits. The lower 32 bits is the number of actual hours. The upper 24 bits (CrystalDiskInfo shows 16 bits) is the number of milliseconds in the next hour.

Seagate SMART Attribute Specification:
http://t1.daumcdn.net/brunch/service/user/axm/file/zRYOdwPu3OMoKYmBOby1fEEQEbU.pdf
http://www.hddoracle.com/download/file.php?id=5129

Normal SATA SMART Attribute Behavior (Seagate):
http://t1.daumcdn.net/brunch/service/user/axm/file/Vw3RJSZllYbDc86ssL6bofiL4r0.pdf
http://www.hddoracle.com/download/file.php?id=5130

Ralston18

Titan
Moderator
Not a direct answer - more information needed.

Update your post to include full system hardware specs and OS information.

Why are those two (Command Timeout and Head Flying Hours) of particular concern?

Are there any specific problems related to the disk drives? If so, what are the problems?

Any error codes, pop-up window errors, file transfer failures - any disk issues at all?
 
The number of Command Timeouts is actually 2 and 4.

The Head Flying Hours (and Power On Hours) is a 56-bit value. CrystalDiskInfo only shows 48 bits, whereas HDDScan shows all 56 bits. The lower 32 bits is the number of actual hours. The upper 24 bits (CrystalDiskInfo shows 16 bits) is the number of milliseconds in the next hour.

Seagate SMART Attribute Specification:
http://t1.daumcdn.net/brunch/service/user/axm/file/zRYOdwPu3OMoKYmBOby1fEEQEbU.pdf
http://www.hddoracle.com/download/file.php?id=5129

Normal SATA SMART Attribute Behavior (Seagate):
http://t1.daumcdn.net/brunch/service/user/axm/file/Vw3RJSZllYbDc86ssL6bofiL4r0.pdf
http://www.hddoracle.com/download/file.php?id=5130
 
Solution