I mentioned in a previous post that I would point out where SQL Server 2008 takes advantage of improvments in Windows 2008 (Check out the "Windows 2008" tag below for that). I just had to share something I got today from the replication team in an e-mail:
"Windows Server 2008 includes a new networking stack, redesigned and rewritten from the ground up, with modern protocol implementations. Besides making IPv6 a full-fledged peer of IPv4, it supports better perf over high-latency, high-loss nets.
In [SQL Server 2008] Katmai, the DP & perf teams collaborated with Windows core networking, so SQL networking could take better advantage of the new stack. The impact of this work can be seen in just-completed replication testing, between two sites separated by over 2,000 miles.
The results are nothing short of eye-popping. A pull replication scenario, which used to run in 223 minutes using [SQL Server 2005]