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Question
Friday, November 16, 2018 10:34 AM
Is there an update on that Microsoft Blog page?
https://blogs.msdn.microsoft.com/san/2011/09/01/the-windows-disk-timeout-value-less-is-better/
Most, not to say all, storage vendors recommend large timeout values (60, 120, 190) to cop with controller failover and the only recommendation from Microsoft would be "less is better" ?
[quote]
(higher value) can make troubleshooting extremely difficult, because on one hand you would have a SQL client application acting slow, and SQL reporting slow I/O, at the same time that there are no events from Windows.
[/quote]
This page probably refers to a scenario that rarely exists : bad link quality with the storage.
In the more frequent scenario of a inaccessible disk, what do you want to "diagnose" ? You ought to have warnings / errors at the storage array / switch levels to diagnose.
When a disk outage occurs, unless the OS as some resources to find another path, which is handled t the "multipath / mpio" level , there's nothing else to do but wait , as much as possible.
My experience with storage array controller failover is that when the disk timeout [quote] surfaces [/quote] before the failover completes, Windows simply crashs...
I prefer a long Freeze properly handled rather than a crash.
All replies (3)
Monday, November 19, 2018 6:13 AM âś…Answered
Hi lolix2,
Thanks for posting in our forum!
I checked many documents, but Microsoft has no other related documents about disk timeout value.
Windows operating systems have a default disk command TimeOutValue of 60 seconds. We can modify this value in the registry, for details, you can refer to the link below:
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
In addition, this link is about adjusting the disk TimeOutValue in the registry key to a lower value. just for your reference.
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Hope this information can help you, if you have any question, please feel free to let me know.
Best Regards,
Daniel
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Wednesday, November 21, 2018 1:51 AM
Hi,
This is Daniel, wish you all the best!
I just wanted to confirm the current status of the problem, if you have any question, please feel free to let me know.
Thanks for your time!
Best Regards,
Daniel
Please remember to mark the replies as answers if they help.
If you have feedback for TechNet Subscriber Support, contact [email protected].
Wednesday, November 21, 2018 9:43 AM
Hi lolix2,
Thanks for mark my reply as an answer!
I am glad to help you, if you have any other question, please feel free to post in our forum.
Wish you all the best!
Best Regards,
Daniel
Please remember to mark the replies as answers if they help.
If you have feedback for TechNet Subscriber Support, contact [email protected].