Agoura Hills-based ISWest, a provider of high speed Internet access, colocation, and server hosting, and Los Angeles-based IT outsourcing firm Cal Net, said Thursday that the firms have expanded an alliance to help clients move servers off-site to save money on managing their IT. Details of the expanded partnership were not disclosed. The firms said they have been working together for the last 8 years. Cal Net has offices in Northridge and Anaheim.