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Our server OS is windows 2008 server enterprise edition, 64-bit and we want to use Apache HTTP server.

I cannot find any introduction about whether it can or not run on 64-bit machine. Please help.

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2 Answers 2

The Apache Software Foundation has not released any official 64 bit binaries for Windows. However, it's open source so there is a third party unofficial 64 bit binary package for Windows. Same thing goes for PHP on Windows:

http://www.elxis.org/guides/developers-guides/64bit-apache-php-mysql-windows.html http://httpd.apache.org/docs/2.0/platform/windows.html

I'd personally go with the official binaries. It depends on what you are doing but performance increases can be negligible: http://www.scribd.com/doc/363677/Benchmarks-AMD64-in-32bit-mode-vs-64bit-mode-Ubuntu (on Linux anyways). Also looking quickly via Google there are some reports of problems with the unofficial 64 bit binaries.

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Yes, it can. Both a 32-bit and 64-bit build will work on a 64-bit machine/OS (with suitable libraries of course).

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