1. Technical Field
Various embodiments of the present invention relate to a data storage device and an operating method thereof.
2. Related Art
Recently, the computing environment paradigm has converted to ubiquitous computing so that computer systems can be used anytime and anywhere. Due to this fact, the use of portable electronic devices such as mobile phones, digital cameras, and notebook computers has rapidly increased. In general, such portable electronic devices use a data storage device having a memory device. The data storage device is used as a main memory device or an auxiliary memory device of the portable electronic devices.
A data storage device using a memory device provides advantages of excellent stability and durability, fast information access, and low power consumption. Data storage devices having such advantages include universal serial bus (USB) memory devices, memory cards having various interfaces, universal flash storage (UFS) devices, and solid-state drives (SSD).
As large capacity files such as audio files and video files are used in portable electronic devices, data storage devices need to have large storage capacities. Therefore, the data storage device includes a plurality of memory devices. To efficiently control or access the memory devices, the data storage device may set memory regions of the respective memory devices as access units.