Thursday, April 1, 2010

Virtually Compensating?

I picked up on a tweet from @jordansissel that on one hand was an "Well of Course" statement but was at the same time something that seems to have been lost in the virtualization buzz. To paraphrase Jordan's tweet: Virtualization shouldn't be taking off because poorly written software can't coexist on the same host.

So what are some of the top key benefits virtualization brings today that have made it the buzz of the industry for the past few years now? 1) Isolation of the virtual system from each other. 2)Resource control of multiple operating systems on the same physical piece of hardware. 3) Improved portability and availability of the virtualized software environments.

To counter these points, go back to Jordan's tweet: Why isn't software written better? Why doesn't my operating system handle things like isolating applications from impacting each other negatively or using too much RAM, CPU or disk I/O? Why aren't my applications more 'self contained' and easily movable to a different host without having to worry about hardware drivers, hidden settings, etc. If I could count on my operating system to handle fairly running multiple Tier 1 applications and those applications to be easily moved between hosts I could effectively utilize modern hardware without adding the hypervisor layer into that stack. Oh and my backup /recovery solution should be able to backup and restore a single application and its data on my host without effecting the other applications or the host. As things set today in order to define an "application" I need a hypervisor (environment), an OS license, application license and associated per user/connection licenses.

I'm not against virtualization, in fact I'm a huge proponent and user of it, but I'm also a fan of effective and simple. What do you think?

Stumble Upon Toolbar