Definition

1. Noun:
   • A unit of digital information storage: A pebibyte is a specific multiple of the byte, the fundamental unit of digital information. It is defined as 2^50 bytes, which is equal to 1,125,899,906,842,624 bytes.
   • Part of the binary prefix system: The term "pebibyte" belongs to the International Electrotechnical Commission (IEC) standard for binary prefixes, which are used to precisely denote powers of two. It is distinct from the decimal-based "petabyte."

Usage

The word "pebibyte" is used in technical contexts, particularly in computing and data storage, to specify an exact quantity of data. It is employed to avoid ambiguity that arises when using the SI prefix "peta-" (which denotes 10^15) in a binary context.

Examples

• Noun:
  • The new data center has a raw storage capacity of several pebibytes.
  • One pebibyte is equivalent to 1,024 tebibytes.
  • When discussing memory architecture, it is more accurate to use pebibytes rather than petabytes.

Advanced Usage

• In Formal Specifications: The term is used in technical documentation, standards, and scientific literature to ensure precision.
  • The filesystem supports volumes up to 4 pebibytes in size.
• Contrast with "Petabyte": A key advanced usage is to clarify the difference between the binary pebibyte (PiB, 2^50 bytes) and the decimal petabyte (PB, 10^15 bytes). A pebibyte is approximately 1.1259 petabytes.
  • The marketing material listed the drive as 1 PB, but its actual formatted capacity was closer to 0.888 PiB (pebibytes).

Variants and Related Words

• Pebi- (prefix): The binary prefix meaning 2^50.
• PiB (symbol): The official unit symbol for pebibyte.
• Tebibyte (TiB): A unit equal to 1/1024 of a pebibyte (2^40 bytes).
• Exbibyte (EiB): A unit equal to 1024 pebibytes (2^60 bytes).

Synonyms

• PiB: The symbolic abbreviation is the direct synonym.
• (Informally and imprecisely) Petabyte: In many non-technical or legacy contexts, "petabyte" is incorrectly used as a synonym, though it technically refers to a different, slightly smaller amount (10^15 bytes).

Related Phrases

• "PiB per second": A unit of data transfer rate, e.g.,
• "In pebibytes": Used to specify the unit of measurement, e.g.,

Noun

1. a unit of information equal to 1024 tebibytes or 2^50 bytes