Memorex CD-R Recordable Disc Economical, versatile media offers cost-effective data management. Many uses, including data archiving, file sharing, and more. 52x recording speed makes burning discs quick and efficient. Write-once format protects valuable data from overwrites and erasures. Disk Type: CD-R. What It Is And Why You Need It Ideal for music, photographs, data backups and archiving. Write Once media. CD-R recordable disc. Economical, versatile media. Many uses. 52x recording speed. Write-once.