The Sun StorageTek T10000 tape cartridge works in tandem with the Sun StorageTek T10000 tape drive to address issues related to data growth, security, manageability, and cost. The T10000 tape cartridge increases data security with the Sun StorageTek T10000 SafeGuide system, which includes features that can increase reliability and extend media life. A unique hub lock stabilizes media within the cartridge shell. A redesigned buckler mechanism securely attaches the cartridge leader to the drive leader. A long tape path guides the media more accurately and reduces tension on the tape. Tension can reduce the life of heads and media. Data integrity is enhanced because the tape guides and rollers guide the media on its back side and do not contact the recording surface. The rollers also enhance stability by minimizing lateral tape motion.