2TB

2TB refers to two terabytes of digital information storage. In decimal notation, a terabyte equals 1,000,000,000,000 bytes, so 2 TB equals 2,000,000,000,000 bytes. In binary terms, data storage is often described as tebibytes (TiB), where 1 TiB equals 1,099,511,627,776 bytes; therefore 2 TB is approximately 1.818 TiB. Because many systems and vendors label capacity using decimal terabytes, the two figures can differ on the same drive depending on how the manufacturer and the operating system report size.

In practice, operating systems may report capacities in TiB or GiB, while drives are marketed as TB. The formatting process for a drive also consumes space, so the usable capacity is slightly less than the nominal capacity.

2 TB is a common size for internal hard drives and solid-state drives, as well as external drives and network-attached storage. It is used for system installations, media libraries, backups, and archiving, offering a balance between capacity and affordability for many users.

There are trade-offs between the media types. Hard disk drives of 2 TB offer large capacity at a lower cost per gigabyte but slower access speeds compared with solid-state drives. A 2 TB SSD can come in SATA or NVMe form factors, providing faster performance at a higher price and often with different interface limits. The exact performance and reliability depend on the specific model, interface, and workload.