540MB

540MB MO Disks are used in multiple industries wherever robust digital storage is required.

540MB disks such as the 33PDO are commonly spec'd by ultrasound manufacturers in the medical imaging community. 

The Acuson Sequioa by Siemens is widely in service across the globe and many feature data archiving solutions that utilize the Philips 33PDO disk.

In the Telecommunications industry, 540MB magneto optical disks are used to back up large mission critical equipment such as the Nortel DMS 10 & 100 series switch.