A solid memory with no moving parts is called:

Correct answer: SSD. An SSD (solid-state drive) has no moving parts.

Background: SSDs are faster and quieter than hard disks.

• HDD: An HDD has spinning disks and moving heads.
• Optical Disc: An optical disc is read by a spinning drive.
• DVD: A DVD is an optical disc that must spin.

Did you know? They store data in flash memory chips.

Memory trick: SSD = solid state = no moving parts.