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Conference decwet::windows-nt

Title:Windows NT
Notice:See note 15.0 for HCL location
Moderator:TARKIN::LIN.com::FOLEY
Created:Thu Oct 31 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:6086
Total number of notes:31449

6050.0. "Size Limitation on NT" by ZPOVC::CSNAQS () Tue May 27 1997 21:41

    Hi,
    
    What is the size limitation on NTFS and FAT in windows NT 4.0 ?
    
    Thanks
T.RTitleUserPersonal
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6050.1ALFSS1::alfdhcp1-1-213.alf.dec.com::GARABOCyberNeuroSurgeon GeneralWed May 28 1997 09:0819
The maximum capacity that can be described by the partition table is:
(sector size) X (sectors per track) X (cylinders) x (heads)
or
512 X 63 X 1024 X 256 = 8,455,716,864 bytes or 7.8 GB

In Windows NT, the maximum cluster size for FAT is 64K when using a 
512 byte sector, so the maximum size for a FAT volume is 4 GB. If NT 
is in a dual-boot configuration with WIN95 or MS_DOS, FAT volumes are 
limited to 2 GB with the other operating systems.

When using NTFS, the architecture allows for 2^^64, or 16 exabytes, 
which is beyonde the capability of most hardware today. Current 
physical limits on hardware reduce this to 2 terabytes (2^^32 * 512 
bytes, or 2^^41 bytes).

For further detailes, consult Chapter 3 (Disk Management Basics) of 
the WINDOWS NT SERVER Resource Guide.

Frank Garabo, MCSD, MCSE