Dell XPS One 2720 Me and My Dell - Page 23

Storage Device Storage devices allow you to store data for later use. Storage devices can be internal or external. Most storage devices store data till you manually delete the data. Examples of storage devices are hard‑disk drives (HDD), solid‑state drives (SSD), optical-disc drives, flash drives, and so on. Internal Storage Devices Internal storage devices are installed within your computer and generally cannot be removed while the computer is turned on. The most common internal storage devices are HDDs and SSDs. HDDs and SSDs use SATA interface to transfer information. SSDs are also physically similar to HDDs, which makes them compatible with existing computers. HDDs have disk platters, whereas SSDs have flash memory. This makes SSDs faster, quieter, energy efficient, and shock resistant. Removable Storage Devices Storage devices that you can remove from your computer without turning the computer off are called removable storage devices. Commonly used removable storage devices include: • Optical discs • Memory cards • Flash drives • External hard drives Optical Drives and Discs Your computer may support a DVD RW or a DVD RW and Blu-ray combo drive. Optical discs can be read-only, write-once, or re-writeable. Some of the common types of drives are: • Blu-ray writer - Reads and writes to Blu-ray Discs, DVDs, and CDs. • Blu-ray reader + DVD RW combo - Reads Blu-ray Discs. Reads and writes to DVDs and CDs. • DVD RW - Reads and writes DVDs and CDs. Storage Device  23