Austin-based web hosting provider RackSpace said today that it has agreed to acquire two firms, Jungle Disk and Slicehost. According to RackSpace, it is acquiring Slicehost for its virtual server hosting services, and Jungle Disk for its cloud storage products. Financial terms of the deals were not disclosed. Rackspace announced the win as part of a new cloud hosting strategy. Rackspace says that it intends to integrate the capabilities of the two firms into its complete hosting portfolio.