8G RAM in 32bit platform

[Olaf Fraczyk]

On Fri, 2007-07-13 at 15:19 +0800, Patrick T. Tsang wrote:
> Hello,
>  
> We will start up the mail server with 4G RAM.
> As I know the 32bits cannot handle RAM more than 3.2G.
I assume you mean Intel/AMD?
If you do, then this is not true.
You can have systems with 64GB RAM. But not on commodity hardware.
Anyway, today, it is really not the right way. You need additionally
think about kernelspace/userspace split, per process memory limit, and
performance limitations.
> The client plans to upgrade the RAM to 8G in coming years.
> Can the 64bits platform is the only solution to it?
If I considered more than 4 GB RAM I would only use 64-bit system.
You may consider buying 64bit machine (almost all on the market today),
install 32 bit system on it. Next you may upgrade - reinstall - to 64
bit system when you add RAM.
> Is there any outstanding problem of 64bits on Cyrus imapd server?
There is some quota problem that I'm aware of.
https://bugzilla.andrew.cmu.edu/show_bug.cgi?id=2967
Check bugzilla.

Regards,

Olaf

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-- 
Olaf Fraczyk <olaf at navi.pl>
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