XatLast is a server (and client), shared storage software for Avid Media Composer editors. In its simplest configuration, two editors can collaborate on a project, sharing media and project files, without a dedicated computer for the server.
That means you can bring two laptops to a location, and ingest on one system, and start editing on the other.
One of the systems will act as both server and edit station (which means it will run both the server and the client application, as well as Media Composer).
The second system will connect to the first over a switch, or connect directly to the first system with an ethernet cable running between them, bypassing the need for a switch.