Boston private equity firms Berkshire Partners has acquired a majority interest in Access Information Management for an undisclosed price.

Summit Partners, also based in Boston, sold the stake in Access, a data protection and record-keeping service provider. Summit purchased the Livermore, California company in 2011 and has grown the company ever since. In early 2014, Summit inked two add-on deals, including the purchase of Safe Site Northwest Inc. and DataSite Business Archives Inc. The Seattle companies, which do business as DataSite Northwest, are known as the largest privately held records and information management services provider in the Pacific Northwest.

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