Samsung today announced it has acquired caching company Proximal Data. Financial details of the deal were not disclosed.

Based in San Diego, California, Proximal Data specializes in server-side caching software with I/O intelligence for virtualized systems (ESXi hypervisor as well as Microsoft’s Hyper-V). The goal is to boost storage performance by controlling and storing frequently used data more efficiently.

Proximal Data’s AutoCache software, a virtual cache storage solution, is supposed to increase virtual machine density and performance by eliminating I/O bottlenecks. Virtual machines on server-attached flash drives thus execute faster.

Proximal Data was founded in 2011 by CEO Rory Bolt. According to its management page, Bolt has more than 25 years of experience in data storage systems, data protection systems, and high performance computing. This is his fourth startup, and it’s also not his first successful exit. In the previous one, Avamar Technologies, he played a key role in selling the business to EMC for $165 million.

This isn’t a first for the Korean company either — it has snatched up a U.S.-based SSD caching software creator before. In December 2012, Samsung bought NVELO, and in its release today says that since 2013, it has been applying that company’s advanced caching software to its branded SSDs “for up-to-date performance and greater convenience to users.” Presumably, Proximal Data’s technology will play a similar role, just on the server side.

A deal between Samsung and Proximal Data was first rumored last week in a report by The Register, which cited “people close to the situation.” The publication estimated the startup had raised a total of $8 million to date.