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 Post subject: Command Timeout 854712254691
PostPosted: June 18th, 2019, 14:38 
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Hi, Crystal disc info shows for my external hdd 854712254691 for Command Timeout. I haven't noticed any issues with that particular drive. I only ran CDI for another hdd and as I was going through the info, I noticed this peculiar number that doesn't make sense to me. All other drives have 0 command timeout. Could it be a software error or what? Please advice.


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 Post subject: Re: Command Timeout 854712254691
PostPosted: June 18th, 2019, 17:34 
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Joined: September 8th, 2009, 18:21
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Location: Australia
I'm assuming that the drive is a Seagate.

Seagate SMART Attribute Specification:
http://t1.daumcdn.net/brunch/service/user/axm/file/zRYOdwPu3OMoKYmBOby1fEEQEbU.pdf

Quote:
3.11 Attribute ID 188: Command Timeout Count

Normalized Command Timeout Count = 100 - Command Timeout Count.

This attribute tracks the number of command time outs as defined by an active command being interrupted by a HRESET and COMRESET or SRST or another command.

The normalized value is only computed when the number of commands is in the range 10^3 to 10^4. The CommandCount and ErroCount are cleared when Number Of Commands reaches 10^4. The error count used to compute normalized value is not reported in attribute Raw value. It is reported in vendor info area of Attribute sector, bytes 474:475.

If Command Timeout Count is > 99, normalize value of 1 is reported. The initial Worst Value is set to 0xFD as a special case.

Raw Usage

Raw [1 - 0] = Total # of command timeouts, with Max hold of FFFFh

Raw [3 - 2] = Total # of commands with > 5 second completion, including those > 7.5 seconds

Raw [5 - 4] = Total # of commands with > 7.5 second completion

A raw value of 854712254691 equates to 0x00C700D200E3 in hexadecimal.

http://www.google.com/search?q=854712254691+in+hex

That is, the 3 components are ...

    0x00C7 (= 199 decimal)
    0x00D2 (= 210)
    0x00E3 (= 227)

The bottom line is that Command Timeouts are a sign that the drive is struggling. I would backup regularly.

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 Post subject: Re: Command Timeout 854712254691
PostPosted: June 18th, 2019, 17:56 
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Joined: June 18th, 2019, 14:31
Posts: 4
Location: United Kingdom
fzabkar wrote:
I'm assuming that the drive is a Seagate.


It is a Samsung D3 station 3.0, sold by Seagate

fzabkar wrote:
A raw value of 854712254691 equates to 0x00C700D200E3 in hexadecimal.

http://www.google.com/search?q=854712254691+in+hex

That is, the 3 components are ...

    0x00C7 (= 199 decimal)
    0x00D2 (= 210)
    0x00E3 (= 227)

The bottom line is that Command Timeouts are a sign that the drive is struggling. I would backup regularly.


I must admit it is too technical for me. Any way to avoid this struggle? What values would be good? Thank you very much for all this info.


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 Post subject: Re: Command Timeout 854712254691
PostPosted: June 19th, 2019, 16:39 
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Joined: June 18th, 2019, 14:31
Posts: 4
Location: United Kingdom
I have already replied since yesterday and apparently it should be approved first, but does it usually take that long?

Anyway, in case it went astray:

I have a samsung d3 station 3.0

Thanks a lot for the info. It is too technical for me. Could you please give any advice as to how may the straggle be avoided and what should be good values in hex and raw dec?
Cheers.


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 Post subject: Re: Command Timeout 854712254691
PostPosted: June 19th, 2019, 17:44 
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Joined: September 8th, 2009, 18:21
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Location: Australia
The best raw value is zero, ie no timeouts. As for how to avoid them, that is beyond the user's control.

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A backup a day keeps DR away.


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 Post subject: Re: Command Timeout 854712254691
PostPosted: June 19th, 2019, 17:54 
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Joined: June 18th, 2019, 14:31
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fzabkar wrote:
The best raw value is zero, ie no timeouts. As for how to avoid them, that is beyond the user's control.


I see. Thanks a lot for your help.


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