Professional Disc (PFD)

Sony’s name for their Blue Laser disk technology used in XDCAM products and for data recording. This has many similarities to the Blu-ray disk, with CD/DVD dimensions it is housed in a cartridge, weighs 90g and offers 23.3 GB storage on one-side and a data rate of 9 MB/s (72 Mb/s). It can support 70 minutes of 50 Mb/s MPEG IMX and faster-than-realtime transfers. Good for around 10,000 re-record cycles it is more compact, faster and more versatile than tape.

Further development has produced a dual-layer model with 50 GB, then a triple with 100 GB and a quad version with 128 GB, providing up to four hours of recording.

See also: Optical disks