Adarak Prime was a Cardassian planet.
In 2375, during the Dominion War, Adarak Prime was the location for a weapons depot, which was defended by a single Cardassian garrison. This depot was considered by Odo and Garak as a vulnerable facility that the Cardassian Liberation Front could target for attack. They identified a weakness in the depot's perimeter defenses which could be exploited by a small team. Garak would disable the depot's security protocols. The rebels were against raiding the planet and killing their own countrymen. Kira Nerys replies by stating that during the Occupation of Bajor, she didn't want to attack any facility populated by Bajorans, but she did because they were Collaborators. She also said that the Dominion would place Cardassians at every single one of their bases once they learned the rebels would not attack their own people. (DS9: "When It Rains...")