What are the limitations of NTFS regarding the number of directories and max allowed files per directory?
NTFS Limitations
filesystemsntfs
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Best Answer
Maximum allowed is pretty generous. Unlimited files in unlimited directories. The maximum files and directories on a VOLUME is limited to unsigned 32-bit minus 1 (4,294,967,295 objects). Practical limits are another thing, though.
http://technet.microsoft.com/en-us/library/cc780559(WS.10).aspx
Edit: 64-bit windows doesn't seem to change things. I can find no evidence that 64-bit servers have higher limits. The file limit is more of a file-system format problem than a kernel bit-width problem. The next version of Windows may allow more files, it doesn't look like Windows 2008 R2 will be changing this.