Red Hat Network (RHN) (http://rhn.redhat.com) is the software distribution mechanism for Red Hat customers. When purchasing the entitlements for Red Hat Directory Server 7.1 SP6, you will also have received account login information for Red Hat Network.
Log into Red Hat Network.
Go to the Channels tab, and select the Red Hat Directory Server 7.1 channel. Browse through the complete channel list if needed.
Go to the Downloads tab in the Red Hat Directory Server 7.1 channel, and download the Red Hat Directory Server packages.
The files are tarball (.tar.gz) archive files, not ISO images.
ISO images containing both RPM and SRPM package files are available as downloads through the Red Hat Directory Server 7.1 channel. The RPM packages can be downloaded and installed in the usual manner. The ISO images can be downloaded and burned on to a CD-recordable media using the appropriate software.
The Solaris 9 64-bit packages can be found there under the ISOs list, as well as the tarball (.tar.gz file) archive for the source code.