You can download Sun Java System Directory Server Enterprise Edition 6.2 software from the following location.
http://www.sun.com/software/products/directory_srvr_ee/get.jsp
The download page serves as a starting point to direct you to the proper downloads depending on the distribution type you need to download. Directory Server Enterprise Edition 6.2 is available in the following distributions.
Native package distribution
zip distribution
For a comparison of the two distributions, see Directory Server Enterprise Edition Software Distributions in Sun Java System Directory Server Enterprise Edition 6.2 Installation Guide.
Directory Server Enterprise Edition 6.2 is available in the following forms.
Java ES installer — full installer for Solaris and Linux systems native packages.
Native patch — patches to upgrade Directory Server Enterprise Edition 6.0 and 6.1 native packages installed using the Java ES installer.
There is no Native patch delivery for SuSE Linux Enterprise Server in Directory Server Enterprise Edition 6.2.
Zip based distribution — standalone delivery to install Directory Server Enterprise Edition 6.2 or upgrade Directory Server Enterprise Edition 6.0 and 6.1 zip installations.
For information on patch numbers, see Software Installation in Sun Java System Directory Server Enterprise Edition 6.2 Installation Guide.
For the detailed information on what you need to install based on your current installation, refer to the Installation Procedure Quick Reference in Sun Java System Directory Server Enterprise Edition 6.2 Installation Guide.