Flights to St. Thomas and St. John. Enjoy a magnificent trip to St. Thomas and St. John, two islands that promise to provide a seaside paradise for you to revel in throughout your vacation.
A Relay Rack is a 2-post aluminum or steel structure with either EIA standard (round) mounting holes or universal (square) mounting holes. Relay Racks are also known as 2-Post Racks or Open Bay Racks. The vertical holes spacing on Relay Racks are standardized for mounting Telco, or computer / network equipment.
1. 4-Post Server Racks. 1  The most basic server rack is an open frame 4-post rack. 2  The term relay rack has been around for over a hundred years, first used in the early 20th century for telecommunication and railroad signaling. 3  For small applications, portable server racks and cabinets are a great way to go.