Enterprises that want their storage organized around virtual machines will get more hardware options and greater scalability later this year from Tintri, a startup that specializes in VM-based storage. On Tuesday, Tintri updated its VMstore line of appliances with two new models and unveiled Tintri Global Center, which lets IT administrators manage multiples of the company's boxes as one system. Both the hardware and software are scheduled to ship by the end of the year.