Chapter 4, Problem 4.2E

Program Plan Intro

Backup:

• The backup is the process of taking identical copy of file, data, or code which can be used when original data is lost, corrupted, or spoiled.
• The user should use high quality media to back up the files and the best option is optical disc or external hard drive.

Storage media for backups:

Hard drive:

• It is a storage device that stores and retrieves the data.
• It is a rotating disk coated with the magnetic materials and holds the data even when the power is off.
• Hard drives are 2.5 inches in size and its storage space ranges from 160 GB to 2 TB.

Optical disc:

• It is an electromagnetic data storage device that can be written to read using a low-powered laser beam.
• Examples of optical discs such as Compact Discs (CDs), and Digital Video Discs (DVDs). CD and DVD are the optical standards, which are less expensive.
• Optical discs can store up to 25 GB of data.

USB flash drive:

• Memory sticks, thumb drives, or jump drives are the various names for USB flash drive.
• It is compact and it is easy to use. After plugging the USB device into USB port, it is ready to perform the read and write operations.
• The storage capacity ranges from 128 MB to 256 GB.

Cloud storage:

• The cloud backup is a process of taking copies of the files and data into cloud.
• It maintains the backup hardware. The files are retrieved from anywhere but it requires internet connection.
• Many users are choosing cloud storage because it is not expensive.
• A single person can store up to 5 TB of data in Google cloud.