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Because file size references are stored in eight instead of four bytes, the file size limit has increased to 16 exabytes (EB) (2 64 − 1 bytes, or about 10 19 bytes, which is otherwise limited by a maximum volume size of 128 PB, [nb 2] or 2 57 − 1 bytes), raised from 4 GB (2 32 − 1 bytes) in a standard FAT32 file system. [1]
File size is a measure of how much data a computer file contains or how much storage space it is allocated. Typically, file size is expressed in units based on byte . A large value is often expressed with a metric prefix (as in megabyte and gigabyte ) or a binary prefix (as in mebibyte and gibibyte ).
Its main benefit is its exceeding of the 4 GB file size limit, as file size references are stored with eight instead of four bytes, increasing the limit to 2 64 − 1 bytes. Microsoft's GUI and command-line format utilities offer it as an alternative to NTFS (and, for smaller partitions, to FAT16B and FAT32 ).
A short integer can represent a whole number that may take less storage, while having a smaller range, compared with a standard integer on the same machine. In C, it is denoted by short. It is required to be at least 16 bits, and is often smaller than a standard integer, but this is not required.
When the ideal result of an integer operation is outside the type's representable range and the returned result is obtained by clamping, then this event is commonly defined as a saturation. Use varies as to whether a saturation is or is not an overflow. To eliminate ambiguity, the terms wrapping overflow [2] and saturating overflow [3] can be used.
When the kernel moved to 64-bit inodes the file system ext3 used them internally in the driver by 2001. However the inode format on the storage media itself was stuck at 32-bit numbers. [21] As mass storage devices moved to the Advanced Format of 4 kilobyte per block the actual limit of that file system format is at 8 or 16 terabyte. [21]
It has an approximate range of ±1.0 × 10 −28 to ±7.9228 × 10 28. [1] Starting with Python 2.4, Python's standard library includes a Decimal class in the module decimal. [2] Ruby's standard library includes a BigDecimal class in the module bigdecimal. Java's standard library includes a java.math.BigDecimal class.
No limit defined [cf] 512 GiB (549.7 GB) to 32 PiB (36.02 PB) 512 ZiB (604.4 ZB) [121] (2 79 bytes) Subdirectory per directory is 32,767 [120] UniFS: No limit defined (depends on client) ? No limit defined (depends on client) Available cache space at time of write (depends on platform) No limit defined No limit defined Version 6 Unix file ...