1. A method comprising: creating a deployed logical server by importing specifications of a first real server so that said logical server is stored in a logical-server database, said specifications including a first network identity of said first real server, said logical-server database storing plural logical servers, said database associating each of said logical servers with a respective network identity and compute, storage and network requirements, said logical servers having alternative deployed and undeployed states, said logical servers, when deployed, serving as management abstractions for workload containers in the forms of real physical servers and real virtual servers; releasing said logical server from said first real server so that said logical server is undeployed; assigning a second network identity to said first real server; and redeploying said logical server to a second real server so that said logical server continues to be associated, in said logical-server database, with said first network identity and respective compute, storage, and network requirements.