NTFS
Developer Microsoft
Full name NT File System
Introduced July 1993 (Windows NT 3.1)
Partition identifier 0x07 (MBR)
EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (GPT)
Structures
Directory contents B+ tree[1]
File allocation Bitmap
Bad blocks $badclus
Limits
Max file size 264 bytes (16 EiB) minus 1 KiB [2]
Max number of files 4,294,967,295 (232-1)[2]
Max filename length 255 UTF-16 code units[3]
Max volume size 264 − 1 clusters [2]
Allowed characters in filenames In Posix namespace, any UTF-16 code unit (case sensitive) except U+0000 (NUL) and / (slash). In Win32 namespace, any UTF-16 code unit (case insensitive) except U+0000 (NUL) / (slash) \ (backslash) : (colon) * (asterisk) ? (Question mark) " (quote) < (less than) > (greater than) and | (pipe) [3]
Features
Dates recorded Creation, modification, POSIX change, access
Date range 1 January 1601 – 28 May 60056 (File times are 64-bit numbers counting 100-nanosecond intervals (ten million per second) since 1601, which is 58,000+ years)
Date resolution 100ns
Forks Yes (see Alternate data streams below)
Attributes Read-only, hidden, system, archive, not content indexed, off-line, temporary, compressed
File system permissions ACLs
Transparent compression Per-file, LZ77 (Windows NT 3.51 onward)
Transparent encryption Per-file,
DESX (Windows 2000 onward),
Triple DES (Windows XP onward),
AES (Windows XP Service Pack 1, Windows Server 2003 onward)
Single
Instance
Storage Yes
Supported operating systems Windows NT family (Windows NT 3.1 to Windows NT 4.0, Windows 2000, Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7)