What does Linux Cost?

- by Paul Murphy, -

Microsoft's flat earth site proving Windows cheaper than Linux includes a contribution from Meta Group dedicated to the proposition that the combination of Linux plus a database costs more than a Windows Server plus SQL-Server. As proof they adduce an upfront cost of $4000 for Windows 2000 Advanced Server plus $5,000 for SQL-Server against Red Hat Enterprise Linux at $3,200 for one year premium support plus Oracle at $15,000 or DB2 at $7,500. That comparison is deceitfull by both omission and commission, but it does raise an interesting question: what does Linux really cost?

For many people the right answer is simply that Linux is genuinely free. If you know Linux and already have a CD set, or can borrow one, you can install as many copies as you like without paying out a nickel for licensing. Strictly speaking, therefore, a comparison between the cost of the Linux license and the cost of a Microsoft server operating system license should have a zero on the Linux side and some number greater than $799, depending on hardware, usage, and the number of clients allowed, on the Windows side.

Suppose, for example, we imagined consolidating 40 Windows servers split evenly between 20 limited usage file and print servers at $799 each and 20 database or application servers at $3,999 each to perhaps 16 Linux servers. In this case, the upfront cost comparison for the OS component should show Microsoft's licensing at $95,960 and Linux at zero.

If you don't already have, or can't borrow, a CD set you can either get the complete 7 CD Debian set delivered for less than thirty bucks or you can buy CD blanks and make your own if you don't mind spending the time and have the bandwidth for a 4.5GB download. In that situation the comparison mentioned above doesn't come out as $95,960 to nothing, but the Microsoft cost still looks like a bit of a loser at more than three thousand times the cost of Linux.

In most cases, however, companies don't have either the IT skills or the trust relationships between IT and business management needed to pull off a Linux server consolidation without incurring significant additional costs. In the best cases those costs will be primarily related to the time needed to bring in the missing skills, vitalize IT, and build those trust relationships, but few companies know enough about Linux to realize that it isn't Windows --meaning that MCSE ideas about computing don't apply.

What's needed is defenestration, throwing out the Windows mindset along with Microsoft's licenses and software, but that's not as simple as changing a boot cd or even migrating a whole raft of servers. What's involved is fundamental change both in how IT operates and in what it does. For example, the consolidation mentioned earlier would be a small part of a planned IT evolution with applications change, increased user control, some new skills brought in, some existing staff let go, and some staff retrained. That's where the organizational benefits to Linux come from: not a one time capital cost reduction, but from long term IT cost control coupled with an increase in IT's ability to contribute to organizational productivity.

Unfortunately you don't usually see companies taking on carefully planned transitions to new ways of thinking about computing. Instead, mounting user dissatisfaction with IT services gets expressed among senior managers as rising concern over IT costs, and the two groups work out an unstated compromise in which the same IT people who can't make the Windows stuff they know work to the satisfaction of their users promise to explore the use of Linux as a way to cut costs paid to third parties. When they do, the implementation usually becomes a trial by error with the MCSEs in charge attempting to use Linux as a cheaper substitute for Windows without making any other changes in their own behaviors.

As a result the new systems never perform quite as well as the old ones and costs start to mount as the people making the technical decisions look at everything except their own certainties about computing for solutions. In this situation it's common, for example, to see one for one Windows to Linux conversions with the case for premium support on every production server bolstered with every failure. In the case of our forty server company this combination reduces upfront savings to around $30,000 while creating a situation in which the cost of support forms the basis for a return to Microsoft in the second and subsequent years.

The worst part about this is that the MCSEs involved are right: Linux isn't as good a Windows 2003/XP server as Windows 2003/XP. Linux isn't a cheaper form of Windows; direct substitution without change in thinking fails initially from a technology perspective and fails in the longer term from a cost perspective.

So what does Linux really cost for business? Thirty bucks for the CD set plus everything your MCSEs think they know about how computing works in business and all the Microsoft technologies, starting with things like rackmount SMP simulation, domain management, switch based networking, DHCP, security, network or workload balancing, and server clustering originally developed to paper over gapping holes in their technology and therefore inapplicable to Linux.

Paul Murphy wrote and published The Unix Guide to Defenestration. Murphy is a 20-year veteran of the IT consulting industry.