Install now, upgrade later?

[David Groos]

Thanks Ekul for the further info, I get it now.  I think I'll use solution
#1 below--sounds like it is doable and will help out with what I need for
these last couple of months of school then over summer power-up with a new
Lucid install.  I'm pretty sure I'm currently using the server install.  How
can I tell?

David

On Fri, Mar 19, 2010 at 8:35 AM, ekul taylor <ekul.taylor at gmail.com> wrote:

> The 32/64 bit question is very complicated.  Hopefully I can help.
>
> Any AMD Opteron or Intel Xeon server made in the past few years has support
> for running 32 bit and 64 bit code (even at the same time).  So you could
> clone your existing server and it would work fine but you might not be able
> to take advantage of all of your RAM.
>
> If you have more then 4 GB of RAM you have 3 options to use it all:
>
> 1. Clone your 32 bit server install but install the linux-server package if
> it isn't already used.  This kernel is PAE enabled which is something Intel
> developed to let 32 bit processors address more then 4 GB of RAM.  It does
> have slight performance issues and no one process can address more then 4 GB
> of RAM but for a terminal server this isn't important.
>
> 2.  Clone your 32 bit server but install and run a 64 bit kernel.  This can
> be tricky dependency-wise so I wouldn't recommend it so I won't outline the
> many steps here.
>
> 3.  Install a 64 bit version of edubuntu and reuse your configuration files
> from your old server.  It's pretty easy to do since except for
> /etc/modules.d and /etc/modprobe.conf none of the config files are about the
> kernel.  You do have to build your chroot a little differently if you use
> this option as thin clients will almost certainly need a 32 bit boot
> environment.  To do this you use the command:
> ltsp-build-client --arch i386
> instead of just ltsp-build-client.  This is what I option I would use when
> installing lucid but if you're just going to be using karmic for a few
> months option 1 will involve the least setup.
>
>
> On Fri, Mar 19, 2010 at 9:11 AM, David Groos <djgroos at gmail.com> wrote:
>
>> Confusion compounds...
>>
>> the one thing I might have understood...
>>
>>>
>>> If you install this kernel in Jaunty/Karmic, then you can access more
>>> than 4 Gb of RAM while having 32 bit systems/OS:
>>> http://packages.ubuntu.com/karmic/linux-server
>>>
>>> So you can do that either in the old or the new server.
>>>
>>
>> You're saying that:
>> --I could install the above kernel onto my current 32 bit hardware.
>> --then I could either:
>> --------install up to 64 Gb RAM on old server
>>                       or...
>> --------then I could clone this new setup to the new server.
>> ?
>>
>> Thanks,
>> David
>>
>>
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>>
>
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