He said 50 per cent of staff work in engineering. Currently the company has 850 staff but this will increase to 920 by the end of the fiscal year.
Sillars said the Australian market is the "guiding light of the business" and has always been "exceptionally strong".
Rejecting Commvault's claims, a Symantec spokesperson said the company offers the most comprehensive, reliable, market-leading data protection for its customers whether they are SMB or enterprise.
The spokesperson pointed to Gartner research showing: "Symantec is the recognised leader in worldwide backup and recovery owning 44 percent of the market compared to only four percent by CommVault.
"The breadth of our solutions, combined with our expertise and understanding of the local market, enables Symantec to confidently provide our customers and partners with innovative and integrated technologies that manage and protect their information."
EMC was unavailable for comment.