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My friends ask me to build him a web server with 12.04 64-bit server edition in his 1GB RAM server.

Is it recommended or safe? Because I heard 64-bit system need at least 2GB RAM.

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Well it is safe to use. 64 or 32 bits. –  Dr_Bunsen Jan 5 '13 at 12:48
    
how do you define 'safe'? –  don.joey Jan 5 '13 at 12:57
    
safe means stable for use, especially with 1GB RAM –  Sheratan Jan 5 '13 at 14:04
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2 Answers

The server guide lists the minimum requirement as 128 megabytes for all architectures. I don't see any reason why 1GB wouldn't be fine.

However, that's just the installation. How much RAM you should have to run a particular workload depends on what that workload is.

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I agree with you, Robie Basak. I run a 32-bit webserver with 512MB RAM. It works efficiently, but on the other hand, I don't have that much traffic on the server as it's mainly for private use. –  Zeelia Jan 5 '13 at 12:45
    
Well, this server is not for private use. :) And will use LEMP. –  Sheratan Jan 5 '13 at 13:56
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if the CPU is x86_64 you can do that

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I recommend expanding this answer to provide further explanation. –  Eliah Kagan Jan 6 '13 at 0:15
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