Data cluster - Wikipedia
https://en.wikipedia.org/wiki/Data_clusterIn computer file systems, a cluster (sometimes also called allocation unit or block) is a unit of disk space allocation for files and directories. To reduce the overhead of managing on-disk data structures, the filesystem does not allocate individual disk sectors by default, but contiguous groups of sectors, called clusters. On a disk that uses 512-byte sectors, a 512-byte cluster contains one sector, w…
Default cluster size for NTFS, FAT, and exFAT
support.microsoft.com › en-us › topicCluster size represents the smallest amount of disk space that can be used to hold a file. When file sizes do not come out to an even multiple of the cluster size, additional space must be used to hold the file (up to the next multiple of the cluster size). On the typical hard disk partition, the average amount of space that is lost in this ...
What does cluster size mean when referring to hard drives?
https://kb.iu.edu/d/ahim18.01.2018 · The size of the cluster is important because space can be wasted on systems that are inefficient in sizing the clusters. For example, if you have a 2GB hard drive partitioned with FAT16, a common file system used by DOS and some versions of Windows 95, your cluster size is 32KB. This means that any file you store will have a minimum file size ...