ubuntu recommended partition sizes

rhel-recommended-partition-sizes.txt

From: http://www.redhat.com/magazine/022aug06/features/webserver
You can select automatic partitioning for your hard drive space, but it may not be ideal for this kind of deployment. Here is a suggested breakdown of your partitions, based on a computer with 1GB of RAM and a 160GB hard drive:

/boot     100MB 
/         10240MB
swap      2048MB  (this should  be twice the system memory)
/tmp      5120MB
/var      133120MB  (this is where the majority of your web content will be stored)
/var/log  10240MB

ubuntu-partition-sizes.txt

When using the custom installer one should use the following recommended sizes:

minmum - avg      folder       type    / location
------------------------------------------------------
100mb  - 500mb    /boot       primary  / beginning of disk
half ram          /swap       logical  / end of disk
10gb   - 50gb     /           primary /  beginning of disk
rest of space     /home       primary /  end of disk