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Home > Forums > Application Management > Application Management > Enterprise Level Server Management Forum

Disk I/O requests in Windows Operating Systems

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bworley1404 (IS/IT--Management)

19 Jul 12 12:22

I've been trying to search for this, but I'm not sure what exactly to search for...anyhow, here goes.

My question is...how does Windows Operating Systems priortize disk I/O's. For instance, if I have a Windows Server running SQL Server, and I have 20 users accessing a database on that server, and one user trying to copy a file from the server would one have priority over another for the disk I/o's? Not sure if I explained that well enough.

We have a sql server that is accessed by 20-30 users. Response times usually 10-20ms on our network. An additional users decides to copy a 1.5GB file from that server to their desktop, and response times jumped to 300+ms. Was priority being given to the file transfer over the SQL server requests?

Thanks for any help.

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