My data disk queue is high every night at about 1:00 AM UTC. I did sql profiler trace and found that there are many queries running at the same time similar to these:

profiler trace

Can someone tell me what is going on there and how to stop or to control this? Thanks in advance.

Version: SQL-Server 2014

EDIT: I turned off the network, same issue. So, there is something inside SQL server.

  • 1
    Looks like some custom code that is processing indexes. I cannot find any references to the code shown in your screen-capture on duckduckgo.com/… – Max Vernon Sep 9 '14 at 13:08
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    In future, instead of posting a screenshot, you could simply copy-and-paste the T-SQL code into your answer, and "format as code". – Max Vernon Sep 9 '14 at 13:09

From your profiler trace you should be able to see the Login and Host that the queries are coming from. I would then speak to your operations and/or development team to identify the application and function of the queries (or they should at least be able to point you in the direction of where you need to go/who you need to speak to).

Once you have that information you can see if the queries can be tuned in order to reduce the pressure on your disks.

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