If you are looking to download Sun Storage SAN Foundation Software, also named Sun StorageTek SAN Foundation, SFS or install_it, it is not an easy task.
You will need to search for the patch id 10297699 in MOS (My Oracle Support).
Here is the direct link https://updates.oracle.com/Orion/Services/download/p10297699_440_Generic.zip?aru=13141660&patch_file=p10297699_440_Generic.zip.
To find Sun Storage SAN Foundation Software, log into http://support.oracle.com -> Select Patches and Update -> Select Advance Search, type SAN
Select from the release options and download.