'The drive, a 7,200RPM Deskstar 75GB drive, was released on 15 March last year [2000]. At the time, the press release announced excitedly that the drive was "the first IBM drive to use glass disk platters instead of aluminium ... allowing the recording head to read smaller bits of information that are packed more closely together. In addition, glass disks are more stable at higher speeds".'
http://www.computerhistory.org/groups/storagesig/media/docs/...
'The drive, a 7,200RPM Deskstar 75GB drive, was released on 15 March last year [2000]. At the time, the press release announced excitedly that the drive was "the first IBM drive to use glass disk platters instead of aluminium ... allowing the recording head to read smaller bits of information that are packed more closely together. In addition, glass disks are more stable at higher speeds".'