Does anybody know what is the maximum Memory(RAM) capacity and HDD(Storage) capacity for both 32-bit version and 64-bit version of 14.04 LTS? Same Ubuntu 13.10 32 & 64 bit versions too.
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http://askubuntu.com/questions/142043/whats-the-maximum-amount-of-ram-i-can-use-on-an-specific-hardware – Léo Léopold Hertz 준영 Dec 18 '15 at 14:42
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Linux (and therefore Ubuntu) is only limited to the physical architecture of the CPU, chipset, buses, and peripherals.
32-bit Ubuntu (which uses Physical Address Extension mode via Linux's CONFIG_X86_PAE) can use 64GB of RAM (though limited to 4GB virtual memory per process). 64-bit Ubuntu has no addressing limits, so depending on the CPU and chipset, this could be up to 256 TB (for the current generation of 48-bit physical memory CPUs). Most systems will be limited by their chipset and RAM sockets.
For more details, see Larger physical address space.
Hard drive size again depends on the hardware, not Ubuntu. The standard filesystem, ext4, can address up to 1 exbibyte.
Kees Cook
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32bit RAM is 4G addressable 64bit RAM is 16.8 million terabytes
Hard drive space is harder as it depends on file system, hardware and the like. Last time I checked max file size on ext2/3/4 was 8 Petabytes. You can probably say that hardware will limit file system or file size before Ubuntu or Linux would.
coteyr
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