Unix vs Windows.

Survival is dependant on what you need to accomplish.

I believe unix is best for any kind of data based systems. Unix won't disappear.... there's just too much out there that depends on this. Even the major companies involved with hardware solutions to "load balancing" have unix-based systems.

If you do not use major databases or do not want to go thorough the additional training, security, and administration of unix, then by-all-means, use Windows. MS Windows works well too.... the only problem (that continues to be a problem) is the constant patching and upgrading that needs to take place to secure your data.