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My VPS hosting service allow me to install both Ubuntu 32bit and 64bit.

I need to install Apache, Mysql and Drupal on my server. I was wondering if I should go with 64bit and why ?

more in general

1) Is 32-64bit choice going to create software incompatibility issues ?

2) I thought the choice should depend on the machine architecture. Is that correct ? If yes, does this mean they are asking me what kind of processor I want to use ?

aneuryzm
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3 Answers3

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None. There is NO (!) sense today to install a 32 bit server. 32 bit will lock you into a total reinstall if you need more memory etc. - applications are another thing (makes quite often sense to run them 32 bit), but the OS should never be 32 bit.

EEAA
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TomTom
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Need for a larger (3GB+) address space, availability of 32-/64-bit versions of software, and (for i386 vs. x86_64) use of larger register count for e.g. multimedia or scientific purposes.

Ignacio Vazquez-Abrams
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As TomTom said, why shouldn't you choose a 64-bit server... The services/applications you list will work on a 64-bit version of Ubuntu...

Hornbech
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