Survey released last month

A survey released last month by telecommunications giant Mitel showed 90 percent of respondents expected virtualization to become more important in their companies, with the priority being first in mobile phones, second in cloud computing and third in desktop computing.

A Frost & Sullivan survey released in this week showed that only 5 percent of the 18.3 million tablets sold in 2010 were used in business, now that number could reach 30 percent by 2015. A June, 2010 Frost & Sullivan survey showed 49 percent of respondents expect tablets and smartphones to become the end-user computing platform of choice within a few years.

Unfortunately, the number of virtualization products available to connect those devices securely to corporate networks is far thinner than it appears from the marketing and hype surrounding the innovation, says Ian Song, innovation analyst at IDC.

"Virtualization on mobile devices requires some pretty low-level coding, especially because there are so many kinds of hardware and firmware, and it changes pretty fast," Song says. "Even if you're going to stick with just Android, like VMware plans to do, there are already a lot of different versions, and another comes every three or four months."

Citrix and VMware are both moving fast on products that would make smartphones and tablets good virtualization customers, however the rival firms are taking very different approaches.

VMware, as part of its Project Horizon mobile computing effort, is basing its mobile client on the Mobile Virtualization Platform -- a Type II hypervisor designed to run on top of an existing operating system to support one or more additional virtual-smartphone OS/application-sets on top of that. VMware's MVP is as well designed to manage multiple profiles, to allow clients to switch from work to personal to other virtual environments -- without losing configuration or applications set up for each.

Its Project Horizon, announced in August, creates a cloud-based set of personal configurations, applications and data that users can access from anywhere, from any device. Although primarily a desktop virtualization product, it can as well make BYOD setups far more flexible, by not relying on the phone to contain all the data and applications, according to VMware.

VMware's approach is to work with individual phone manufacturers to build its hypervisor onto their devices, focusing only on Android at this hour.

VMware and LG Electronics introduced a virtualized Android phone in December in other words expected to ship sometime early this year, followed by other LG Android devices.

On phones, which have much less processing power, Type I hypervisors could work much more effectively, nevertheless they depend on the ability of the developer to code them to an incredibly wide variety of hardware, Song says.

That's Citrix's strategy, and has been from the beginning, according to Citrix CTO Simon Crosby. The company has been shipping bare-metal hypervisor customers in its Receiver product line since it shipped an Android version in April, 2010 and plans to continue expanding the line.

"With Android, because it's open and its hardware architecture is open, it's not that difficult to virtualize," he says. "The question is what happens when you get to a more closed architecture; I'm not even sure it's legal to virtualize an iPhone at the hardware level.

Type II hypervisor]

"And on software [with a Type II hypervisor], forget about it," Song says. "Apple is not going to let you come in and virtualize it to run another OS."