Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2


Data type Range Default value


512–65,536 (bytes)



Specifies the size of the request buffers that the Server service uses.

Small buffers use less memory, but large buffers can improve performance.


  • This entry does not exist in the registry by default. You can add it by using the registry editor Regedit.exe.

  • For computers running Windows Server 2003 and with 512 MB or more of physical memory, the default size of the request buffers is 16,644 bytes; for servers with less physical memory, the default size is 4,356 bytes. If this entry is present in the registry, its value overrides the default value.