CMS said its contract with Terremark had been set to end in March 2014. Last summer, several months before the botched October 1 launch of HealthCare.gov, the agency issued a “task order” asking for bids. HP was awarded that contract, a CMS spokesman said in a statement.

The contract change was first reported by the Wall Street Journal.

Now, CMS needs to transition its data center to HP at a time when it is just beginning to dig out from a mountain of problems with the website, which is designed to let consumers shop for health insurance required under Obama’s signature health care law.

The complexity of the switch between data center providers could be an additional challenge for the project. A CMS spokesman did not respond to questions about whether the transition would affect the website.