Repository of Hoffan knowledge is a large underground archive where Hoffans used to store knowledge of their race to help rebuild their civilization after culling. The most notable information stored in it was a Hoffan drug research later. (SGA: "Poisoning the Well")

After Hoffans was nearly entirely eliminated by Wraith, information about Hoffan drug eventually fell in hands of Michael Kenmore. (SGA: "The Kindred, Part 1")