New SMB 2.0 allows higher speeds when transfering files between Windows server 2008 machines and Windows Vista machines. On gigabit network we can see a drastical improvement in speed and network performance. SMB2.0 allows ACK packets to be sent only after 16 megabyte of data…  SMB 2.0 as seen by Wireshark* *Wireshark - excelent network analyzer

Read the complete post at http://luka.manojlovic.net/2008/03/16/windows-server-2008-ntfs-smb20-changes-part-iii-packet-analyses/