[CentOS] Migration from 32 to 64 bits

[Fabrizio Di Carlo]

Well... I have 8GBs of RAM... But the point is: how is the best way to do
this migration? How backup data?
Il 26/feb/2014 01:01 "Les Mikesell" <lesmikesell at gmail.com> ha scritto:

> On Tue, Feb 25, 2014 at 5:07 PM, Lists <lists at benjamindsmith.com> wrote:
> > >>>>
> >>> Hmmm... we have 32bit CentOS 6.3 running both 32bit and 64bit
> VirtualBox VMs just fine.
> >> Yes, if you want to use KVM you'd need a 64-bit install, but for
> >> VirtualBox or VMware Player it should only depend on the CPU
> >> capability, not the host OS.
> >
> > While technically true, I can't imagine wanting to do much with VMs
> > without the extra RAM space afforded by 64 bit O/S. Really, 2 (ok, 3) GB
> > of RAM is *not enough* to do serious work. I'd strongly suggest starting
> > with at least 8 GB of RAM. You can do it with the 2 or so that you have,
> > but I wanted to scream with 2 GB using VirtualBox for Windows
> > compatibility testing.
> >
> > 8 GB lets me run a host OS (Fedora) and 2 VMs without too much trouble.
> > 3 VMs starts to slow down noticeably, no matter how I tweak the memory
> > split.
>
> I think the CPU hardware support lets virtualbox give RAM to the
> guests even if there is more than the 32-bit host OS could use
> natively.
>
> --
>    Les Mikesell
>      lesmikesell at gmail.com
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