CDRW and DVDRW
portable storage medium
No, it is a removable storage medium that may be used by a computer.
Transfer rate.
If you are asking what the largest storage component in a personal computer is, that would be the hard drive. The hard drive is a non volatile storage medium. Meaning it holds its data, even when the power is turned off.
Optical Storage Medium
No. It transfers it from memory to a storage device, so it does the opposite.
The main storage medium within the system unit is the hard drive or solid-state drive (SSD). This is where data is stored persistently, even when the computer is turned off.
A storage tape is a high quality medium (often 8mm wide now) in a cartridge used to store backups of computer system files.
Defrag, chkdsk, are the two big ones.
Auxiliary storage devices are used to provide additional, portable storage, as opposed to hard drives which are fixed inside the computer and serve as primary storage devices. ------------------------------------------------------------------------------------------------------------------ Auxiliary storage is a term used in mainframe computing and refers to the medium on which paging datasets reside.
RAM is volatile storage, short-term storage or working memory. As opposed to a hard-drive which is non-volatile, long term storage or a mass-storage medium.
A direct view storage tube is used to display an image for a period of time after it was illuminated. They are used as a computer-display medium and have a high resolution.