Organizations are finding it hard to calculate the cost benefits of desktop virtualization and broad adoption is unlikely to happen for another year or two, VMware's CEO said on Wednesday.

Interest in the technology is high, and companies with a strong focus on security and regulatory compliance, such as financial services companies, are adopting it quickly, VMware CEO Paul Maritz said during the company's quarterly conference call Wednesday.

But for other organizations the benefits aren't so clear. Many companies don't know how much they spend to manage their standard, physical desktops, making it hard to calculate the return on investment for a virtual system, he said.

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