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TCP/IP KeepAliveTime Reduction
Reduce this setting on all EEPC servers from two hours (the default) to five minutes. The server will require a
restart. Once this is done, if an endpoint client loses the connection with the server, the server will release the
lock after approximately 5 minutes. This will also prevent broken remote sbadmcl connections from locking
the scripting user account for 2 hours.
Procedure
1. Open Regedit
2. Go to: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
3. Open or create the Dword KeepAliveTime
4. Change the value to 300000 in decimals (Time in milliseconds)
Extra info
The KeepAliveTime setting controls how often keep‐alive packets are sent in milliseconds (300,000 is
recommended). It controls how often TCP sends a keep‐alive packet to verify that an idle connection is still
intact. If the remote computer is still reachable, it acknowledges the keep‐alive packet.
MS KB article: http://support.microsoft.com/default.aspx?scid=kb;en‐us;324270#EQACAAA
Key: Tcpip\Parameters
Value Type: REG_DWORD (Time in milliseconds)
Valid Range: 1‐0xFFFFFFFF
Default: 7,200,000 (two hours)
NOTE: A similar setting KeepAliveInterval has a default 1000 (= 1 second), this setting is correct so do not
change this.
Last Access Time Stamp (NtfsDisableLastAccessUpdate)
With large databases, it is possible that some groups may become overpopulated. When a large group is
opened (for example one with over 5000 users), it can take some time to open. To reduce hard disk read and
write time, a registry setting can be set to prevent the Last Access time stamp from being updated on every file
access. The performance boost will be about 50%! A restart is needed after the change.
Procedure
1. Open regedit.
2. Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem.
3. Create a new DWORD value, or modify the existing value, named "NtfsDisableLastAccessUpdate" and
set it to "1".
Microsoft article: http://technet2.microsoft.com/WindowsServer/en/library/80dc5066‐7f13‐4ac3‐8da8‐
48ebd60b44471033.mspx?mfr=true
Windows Server as a File Server
Tune Microsoft Windows 2003 server to be a file server.
See the Microsoft article http://support.microsoft.com/kb/174619 about this.
Theory
Increase NTFS MFT (Master File Table, used to be FAT) to 50% of the disk space. The result is that small files
are being stored in the MFT and not as separate files in the NTFS. This helps a lot because we have thousands
of small files.
Procedure
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