Cheyenne Software Inc, Roslyn Heights, New York is creating independent NetWare, Windows NT and Unix divisions, each responsible for product development in that area. Cheyenne president and chief executive, ReiJane Huai, will head the Windows NT-focused New Territory division. Jeff Finkle leads the Unix division, which provides the ArcServe/Open line of storage management and HSM file management services for Unix networks. It will put the recently acquired JetServe disaster recovery tools up under Unix, as well as Archive and new database agents for Sybase, Ingres and Informix.