Zebibyte

Multiple-byte units
Decimal Value Metric 1000 kB kilobyte 10002 MB megabyte 10003 GB gigabyte 10004 TB terabyte 10005 PB petabyte 10006 EB exabyte 10007 ZB zettabyte 10008 YB yottabyte 10009 RB ronnabyte 100010 QB quettabyte	Binary Value IEC Memory 1024 KiB kibibyte KB kilobyte 10242 MiB mebibyte MB megabyte 10243 GiB gibibyte GB gigabyte 10244 TiB tebibyte TB terabyte 10245 PiB pebibyte – 10246 EiB exbibyte – 10247 ZiB zebibyte – 10248 YiB yobibyte – 10249 – – 102410 – –
Orders of magnitude of data

The zebibyte is a multiple of the unit byte for digital information. It is a member of the set of units with binary prefixes defined by the International Electrotechnical Commission (IEC). Its unit symbol is ZiB.

The prefix zebi (symbol Zi) represents multiplication by 1024⁷, therefore:

1 zebibyte = 2⁷⁰ bytes = 1180591620717411303424bytes = 1024 exbibytes

The prefix zebi was added to the system of binary prefixes in August 2005.

One zebibyte (1 ZiB) is equal to eight zebibits (8 Zibit).

One thousand twenty-four zebibytes (1024 ZiB) is equal to one yobibyte (1 YiB).

Usage examples

• GUID Partition Table (GPT) allows for a maximum disk and partition size of 8 zebibytes, or 9.4 zettabytes, when using 512-byte sectors.
• The ZFS filesystem has a theoretical volume size limit of about 256 quadrillion zebibytes.

In 2019, commercial internal hard drives for the consumer PC market were available up to 16 TB (as single drives, multiple drive arrays with higher total capacity are also available, generally as external devices). The available information storage of 1 ZiB is therefore equivalent to approximately 74 million of the largest hard drives available on consumer PCs.

See also

• IEC 80000-13
• IEEE 1541
• Orders of magnitude (data)
• SI prefix