Migration To Linux
In this page I'll publish insteresting information about how a migration should be planned and performed.
Benefits of Linux
Everybody knows the main features that Linux provides but a lot of people is frightened with the idea of changing their known-bad operating systems.
The best way to decrease IT budget of any enterprise is using FLOSS (Free/Libre Open Source Software). Investments in Linux and free software are always transformed into business actives while investments in private software are expenses.
Planning a migration
The most important point to take care of when we are going to change operating systems of any network, from small to big sized networks, is the number of roles we've got. Having many roles will make our work much more difficult, so we need to consider only the most important roles to make the network much more reliable and easy to manage.
Most migrations starts with the servers. It is not a must because certain services can't be deployed in Linux and they need a non-trivial replacement. A quick migration will be performed in parallel, using at the same time a Linux server and a legacy one. This way, the client hosts can be adapted without stopping production.
I've picked up a few interesting success stories. All of them are finished and working. I hope to find, in the future, a few failed stories and comment their faults.
This medium sized enterprise finished its migration to Linux on April of 2007. A year later it did a survey and gathered a lot of information very useful for anyone who is planning a migration or thinking about it. The most important point in this report is that they had no problems during the process, because, as I told in the introduction of the page, Windows users usually rejects the change and make Linux guilty of all their faults. Also, the report shows the main benefits they obtained, which are impressive.
The full report can be found here (in Spanish).