Why does the License Key Center show two types of ClearCase license keys?
The License Key Center will list two types of ClearCase keys: one for the “classic” ClearCase license manager, and a FLEXlm-based ClearCase key that will work with ClearCase version 7.0 only. In version 7.0 of ClearCase you can choose to use the classic ClearCase license manager or the Rational FLEXlm-based license manager; the choice is yours. Versions of ClearCase prior to v7.0 use the classic license manager only.