Zantaz has bought policy management company Singlecast for an undisclosed sum.

The maker of storage archiving technology will acquire the technology assets of Singlecast, based in New York City and Atlanta, and retain most of the company's employees.

Zantaz specializes in technology that provides discovery of electronic documents to business. Companies that have archival data on tape or disk storage systems need to be able to retrieve that data in a timely fashion to comply with the law. They may also have to get to the data if the company is involved in a lawsuit and parties to the suit seek information.

A change in US rules for criminal procedures that took effect on 1 December places new requirements on companies to accommodate e-discovery requests.

Zantaz and Singlecast have partnered for two years through a technology licensing agreement to provide compliance review tools for Zantaz Enterprise Archive Solution and, more recently, a Zantaz product called First Archive. Zantaz now plans to incorporate Singlecast's technologies across its entire content archiving product line.

The proliferation of email places new demands on companies to archive emails, said Brian Babineau, an analyst with Enterprise Strategy Group (ESG). Zantaz technology classifies email for storage purposes at the moment it is created, making them easier to find in the archive when needed.

ESG estimates that over the next 4 years, email archives will grow by an annual rate of 68 percent.