Westborough, Massachusetts-based Banyan Systems Inc has paid $500,000 for an undisclosed stake in Legato Systems Inc to seal a partnership to provide enterprise storage management. The planned offering will combine Legato’s expertise in data back-up and restore and Unix technology with Banyan’s enterprise networking technology. The first product, Enterprise Backup & Restore, due mid-1994, will enable users to back up their entire enterprise network to a single central location and to manage it from any location throughout the network, and Banyan says it will be fully integrated with its core network services including StreetTalk.