In legal practice, a terabyte describes the volume of digital data—commonly used to scope electronic disclosure/e-discovery, data subject access requests, digital evidence collections, forensic imaging and cloud-hosting in litigation and investigations. It informs estimates for processing, review time, costs budgeting and storage.
A terabyte (
tb) is a standard unit of digital information equal to roughly one trillion bytes. In decimal terms used by most storage providers, 1 TB = 1,000,000,000,000 bytes (about 1,000 gigabytes). Technical and forensic contexts may use a binary measure (tebibyte, TiB), where 1 TiB = 1,099,511,627,776 bytes (about 1,024 GB). Contracts, protocols and court directions should state which convention applies to avoid disputes about data volumes, hosting charges or service levels.
The term is a descriptive technical expression rather than one defined by legislation or case law, and its usage is broadly consistent across England & Wales, Scotland, Northern Ireland and Ireland.
Abbreviation: TB. Not to be confused with terabit (Tb), a unit of network bandwidth. Misreading TB as Tb (or vice versa) can materially affect disclosure scoping, transfer-time calculations and vendor pricing.