Two of Red Hat’s best know and most important executives who quit and were hired by a Massachusetts firm are now looking for work elsewhere.

Alex Pinchev has been replaced “effective immediately” as chief executive officer at Acrnois by one of that firm’s co-founders.

And Scott Crenshaw, who was recruited to Acronis to serve as chief marketing officer, is also out.

Acronis confirmed the departures to WRALTechWire on Wednesday.

Pinchev was Red Hat’s (NYSE: RHT) top sales executive when he bolted in November 2011. He received a great deal of publicity in taking the Acronis post.

Crenshaw left last fall, giving up his post as vice president and general manager of Red Hat’s “cloud” computing business. He also was former general manager of its Enterprise Linux group.

Acronis and red Hat are vying for business in cloud computing.

“Serguei Beloussov has been named CEO of Acronis, effective immediately. He succeeds Alex Pinchev,” a spokesperson for Acronis said.

“Mr. Beloussov is a co-founder of Acronis and was the company’s first President. He has been a member of the Acronis Board of Directors since 2002 and is also the Chairman of Parallels, a global leader in hosting and cloud services enablement and desktop virtualization software.”

The spokesperson also acknowledged Crenshaw’s departure, saying it was amicable.

“Scott Crenshaw has left Acronis on amicable terms to pursue other endeavors,” the spokesperson explained. “His marketing efforts and leadership strategy will be continued throughout the U.S., EMEA and APAC regions as Acronis increases its recognition as a leader in data availability, accessibility and protection.”

In returning to an operational role at Acronis, Beloussov said he was glad to be back.

“I am very excited to be back at Acronis,” Beloussov said in a statement. “Acronis is a leader in traditional backup and recovery solutions, and is leading the way forward with new solutions that protect, secure, and access a company’s valuable data. The Company has a solid strategy for growth in virtual, Cloud and mobility markets. With leading technology and strong execution we will take a very good company and make it a great company.”