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A disk quota is a limit set by a system administrator that restricts certain aspects of file system usage on modern operating systems. The function of using disk quotas is to allocate limited disk space in a reasonable way.
WIMBoot reduces Windows disk usage by keeping system files in a compressed WIM image on a separate hidden disk partition. [82] Similarly to CompactOS, Windows system directories only contain sparse files marked by a reparse point with a WOF tag, and Windows Overlay Filter driver decompresses file contents on-the-fly from the WIM image.
Disk quotas can be used to limit the amount of space taken up by users' special folders. The %username% and %userprofile% environment variables can also be used with Folder Redirection. Up to Windows XP, the Application Data, Desktop, My Documents, My Pictures, and Start Menu special folders can be redirected to a file server. Windows XP also ...
Limits; Max volume size: 35 petabytes [3] ... such as disk quotas, ... Default version formatted by Windows 10 Enterprise v1709 ...
Project quotas Support for project quotas was added in Linux kernel 4.4 on 8 Jan 2016. This feature allows assigning disk quota limits to a particular project ID. The project ID of a file is a 32-bit number stored on each file and is inherited by all files and subdirectories created beneath a parent directory with an assigned project ID.
Windows makes use of the FAT, NTFS, exFAT, Live File System and ReFS file systems (the last of these is only supported and usable in Windows Server 2012, Windows Server 2016, Windows 8, Windows 8.1, and Windows 10; Windows cannot boot from it). Windows uses a drive letter abstraction at the user level to distinguish one disk or partition from ...
The limit on partition size was dictated by the 8-bit signed count of sectors per cluster, which originally had a maximum power-of-two value of 64. With the standard hard disk sector size of 512 bytes, this gives a maximum of 32 KB cluster size, thereby fixing the "definitive" limit for the FAT16 partition size at 2 GB for sector size 512.
Each additional path name in this seemingly infinite set is an actual valid Windows path which refers to the same location. In practice, path names are limited by the 260-character DOS path limit (or newer 32,767 character limit), but truncation may result in incomplete or invalid path and file names.