Where you convert a 32 bit distro to a 64 bit one. If you do not have the luxury of a reinstall then you may want to consider a cross grade. Bringing across custom configs and cron jobs and bespoke setups. However for some customers this can be difficult. One way to escape your old or 32 bit distro is to setup a newer server and migrate to that (or reinstall your current one). If you have a lot of memory and are not limited by the 32 bit application 4GB per process limit then running a 64 bit kernel on a 32 bit distro can be a good option. In most cases you will be fine to remain on 32 bit distros until you need some software application that is 64 bit only (e.g. Since version 9 Oracle have only released a 64 bit version of Java. Some software makers are no longer putting out 32 bit versions of their software. Some distros are dropping or reducing support for 32 bit versions.
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