Where do these hardware requirements come from?

These are the listed hardware requirements for openSUSE 11.3:
Hardware requirements - openSUSE

Where do these hardware requirements come from? 2.5 GB hardware space? The ISO of both 32bit and 64bit are over 4.0 GB already!

Is there a version of 11.3 SUSE out there with 500 MB file size?

The DVD contains more software than a default install.

Oh… Okay, thanks. That explains a lot!

Where may I find a list of optional openSUSE downloads and their functions?

As caf4926 has explained, not everything on the media gets installed by default. But also bear in mind that the software packages are compressed on the media, and when expanded, will take much more than 4GB. Not to mention the vast amount of software only in the online repos. Truly an embarrassment of riches.

PS: 2.5GB disk space is nothing these days unless you have a small SSD or something like that.

Where may I find a list of optional openSUSE downloads and their functions?

software.opensuse.org: Download openSUSE 11.3

Do you have very limited space? Is this old hardware you would like to install on?