Where does it make sense—cost-wise and performance-wise—to invest in WAN Optimization equipment? This is a question some clients will have. There are a few of them on the market, and they all claim to speed up application performance and save money on bandwidth. How do we in good conscience advise a client on whether they should invest the money in WAN Optimization equipment, and at which of their sites? Ideally you would do some testing with demo equipment, or on a try-and-buy basis, to obtain real-life data for your recommendations. Before then you can look at the specs on the brand of Optimizer you are considering and you can get a good prediction on how it should perform.
Background TCP, or Transmission Control Protocol, is the primary layer-4 communication protocol for file copies, database synchronization, and related tasks over the WAN. Many of these TCP synchronization tasks, such as database replication or rsync over ssh, are very dependent on single-stream TCP throughput to maintain the replication consistence and latency required to meet business […]