EMC has signed a definitive agreement to acquire privately-held storage software company ScaleIO.

It said the acquisition will further strengthen the EMC Flash portfolio by combining ScaleIO’s highly scalable server software with PCIe Flash cards, such as EMC XtremSF, in enterprise private cloud and service provider environments.

Upon closing, ScaleIO will operate within the EMC Flash product division.

EMC said ScaleIO and its Elastic Converged Storage (ECS) software will become an integral part of the EMC XtremSW Suite, which EMC introduced earlier this year with the goal of enabling customers to better utilize and manage server-based PCIe Flash storage.

ScaleIO takes a software-only approach to creating a virtual pool of server-based storage by logically combining SSDs, PCIe Flash cards, HDDs—or any combination of these devices.

Terms of the deal were not disclosed.