A Tampa-based real estate investment group's affiliate has agreed to buy a data center housed in the former Macy's building in downtown Atlanta, according to documents that were made public Friday.

An affiliate of Carter Validus Mission Critical REIT, a private real estate investment trust, has agreed to buy the interest in a 338,000-square-foot leased data center at 180 Peachtree, according to documents filed Nov. 18 with the U.S. Securities and Exchange Commission. Carter Validus is run by John Carter, vice chairman of Atlanta-based Carter & Associates, a commercial real estate firm.

Carter/Validus Operating Partnership has agreed to pay Peachtree Carnegie roughly $94.8 million, plus closing costs, for the data center and the parking deck, the documents said. Carter/Validus recently bought a data center near Dallas.

Peachtree Carnegie owns the top five floors of the building. Besides the data center, the other floors are leased to Atlanta's 911 service and an architecture firm.

A group of 25 investors, called 180 Peachtree Retail LLC, bought the building's bottom floors in 2009 from Peachtree Carnegie and rebranded the building as 200 Peachtree. Those floors now have six tenants, including Meehan's Public House and Sweet Georgia's Juke Joint.

Carter/Validus was required to pay a nonrefundable deposit of $2 million and an additional deposit of $500,000 Monday. A third deposit of $3.5 million is due Dec. 2. The deal is expected to close Jan. 3.