光ひかり記き憶おく装そう置ち

Meanings

1

noun

optical storage device

computing

Technical computing term for a device that uses optical technology (e.g., laser) to read/write data, such as CD/DVD/Blu-ray drives.

attire, dress, pretend

置placement, put, set

光ひかりディスク
光ディスク refers to the optical disc medium itself (e.g., CD, DVD), while 光記憶装置 refers to the device that reads/writes such discs.
磁じ気き記き憶おく装そう置ち
磁気記憶装置 is a magnetic storage device (e.g., HDD), contrasting with optical technology.

Compound of 光 (ひかり, 'light') + 記憶 (きおく, 'storage/memory') + 装置 (そうち, 'device'). A straightforward technical term.