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April 05, 2005 12:00 AM

JSI Tip 9225. What is the maximum file size, volume size, clusters per volume, and number of files per volume for the FAT16, FAT32, and NTFS file systems?

Jerold Schulman
Windows IT Pro
InstantDoc ID #83370
Rating: (4)

The following table contains the subject limits:

    FAT16    FAT32
    NTFS

    Maximum File Size    232 - 1 bytes    232 - 1 bytes
    264 bytes - 1 KB (Theoretical)
    244 bytes - 64 KB (Implementation)

    Maximum Volume Size    4 GB    32 GB
    264 allocation units (Theoretical)
    232 allocation units (Implementation)    

    Clusters per Volume    65,535 Max.        65,527 - 4,177,918    
    264 (Theoretical)
    232 (Implementation)

    Maximum Files per Volume        216    222 (~4 million)
    232 - 1

NOTE: See default allocation unit sizes.

NOTE: The current practical limit for an NTFS volume is 2 terabytes (232 * 512 byte sectors) because the industry standard partition table maximum is 232 sectors.



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