Ramblings of a Home Server User

March 3, 2007

Slow network transfers?

Filed under: Uncategorized — Tom @ 6:44 pm

Are you experiencing slow transfers between Vista and your Windows Home Server? I was, and earlier today I found a fix that worked for me. It may not work in every situation so if it doesnt work you can easily reverse it. The fix is disabling Vista’a auto-tuning functionality, which automatically adjusts your TCP recieve window based on the amount of traffic going thru it and some home routers are not compatible with the auto-tuning so your transfers can be slower.

To disable Auto-Tuning:

1. Open an elevated command prompt
(Start -> All Programs -> Accessories -> Right-click on Command Prompt and then click Run as Administrator)

2. Type in the following:
netsh int tcp set global autotuninglevel=disabled

3. Hit Enter and then the word Ok. should appear on the screen. Hopefully now your transfers will be faster.

To Re-Enable Auto-Tuning:

1. Open an elevated command prompt
(Start -> All Programs -> Accessories -> Right-click on Command Prompt and then click Run as Administrator)

2. Type in the following:
netsh int tcp set global autotuninglevel=normal

3. Hit Enter and then the word Ok. should appear on the screen. Vista’s auto-tuning feature is now re-enabled.

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1 Comment »

  1. I tried this and it did not work. What did work a little bit was logging into the server and turning off indexing. Still I am only transferring a little over 10MB/sec.

    I think what happens is the compression on the server is so high that it slows down transfers. If the server would store a file uncompressed and then compress it, the file transfer should be faster.

    Comment by Ryan — March 7, 2007 @ 6:41 am


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