Upgrading from 32bit to 64 bit OS on 2950

[John Hodrien]

On Thu, 3 May 2007, Brendan Heading wrote:

> McDougall, Marshall (FSH) writes:
>
>> On my first foray into the 2950 I installed the 32bit RHEL4U4.  I have
>> been told of the error in my ways and now I want to install the 64 bit
>> version.  I have never done the 64 bit install and am wondering if I can
>> simply do an upgrade or do I need to start from scratch?  Any advice
>> appreciated, and yes I will RTFM as well.  Thanks.
>
> You must reinstall from scratch.
>
> NB who told you that 32bit was an "error" ? There are many cases where 64bit
> systems do not perform measurably better. I would always install the 32 bit
> version unless there was a specific, well established reason to go 64 bit.

Note some applications will see a growth in memory usage that approaches
double on a 64bit distro so there can be noticeable downsides.

I think to an extent it depends what other systems you have what your
'default' position should be.  But then there's nothing stopping you running a
64bit kernel and running 32bit applications (as needs require).  With the
number of large memory machines we use I tend towards x86_64 as my default
position.

jh

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"Une belle fille et un demi de Kronenbourg est la cle de tous les secrets de
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