Definition

1. Noun:
   • A unit of digital information storage: A "petabyte" is a very large unit of data measurement. It has two primary definitions in computing contexts.
   • Binary (Base-2) Definition: In fields like computer architecture and memory, a petabyte (PB) is equal to 1,024 tebibytes (TiB) or 2^50 bytes, which is 1,125,899,906,842,624 bytes.
   • Decimal (Base-10) Definition: In contexts like data storage, networking, and for some hard drive manufacturers, a petabyte is equal to 1,000 terabytes (TB) or 10^15 bytes, which is 1,000,000,000,000,000 bytes.

Usage Examples

• Noun:
  • The new data center has a storage capacity of several petabytes.
  • A single petabyte could hold about 13.3 years of high-definition video.
  • The confusion arises because the system reports 1.13 PB, which is 1 petabyte in base-2 terms.

Advanced Usage

• "Petabyte-scale": Used as an adjective to describe systems, databases, or analyses that involve data volumes on the order of petabytes.
  • The company specializes in petabyte-scale cloud storage solutions.
• The distinction between the binary (2^50) and decimal (10^15) definitions is critical in technical specifications. The binary petabyte is sometimes explicitly called a "pebibyte" (PiB) to avoid ambiguity.

Variants and Related Words

• Pebibyte (PiB): (Noun) The unambiguous term for 2^50 bytes, or 1,024 tebibytes.
  • For precise measurement, use pebibytes instead of petabytes.
• Terabyte (TB): (Noun) A unit of information equal to 1,024 gigabytes (binary) or 1,000 gigabytes (decimal); one-thousandth of a decimal petabyte.
• Exabyte (EB): (Noun) The next larger unit, equal to 1,000 petabytes (decimal) or 1,024 petabytes (binary).

Synonyms

• PB: The standard abbreviation for petabyte.
• Quadrillion bytes: A descriptive synonym for the decimal (10^15) definition.

Related Phrases

• Petabyte of data: A common collocation emphasizing the massive volume.
  • They processed over a petabyte of data for the research project.
• Multi-petabyte: Describing capacities or datasets exceeding one petabyte.
  • The archive is a multi-petabyte repository of satellite imagery.

Noun

1. a unit of information equal to 1024 tebibytes or 2^50 bytes
2. a unit of information equal to 1000 terabytes or 10^15 bytes