Microsoft KB Archive/325722

= Limits of Dynamic Disks in Windows 2000 =

PSS ID Number: 325722

Article Last Modified on 11/20/2003

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The information in this article applies to:


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional

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This article was previously published under Q325722



SUMMARY
This article describes limits of dynamic disks in Windows 2000.



MORE INFORMATION
Dynamic disks are limited under Windows 2000 (NTFS5) to 2 TeraBytes (TB). Dynamic volumes are limited under Windows 2000 (NTFS5) to 64 TB. Regardless of the file system, there is a logical limit of 8,192 EB (2^63 bytes) for volume input/output (I/O) operations.

As of July 2002, the NTFS implementation limits any NTFS volume to a maximum size of between 2 TB (2^32 allocation units x 512 bytes/all.unit) and 256 TB (2^32 allocation units x 65536 bytes/all.unit).

The physical disk access structures are limited to a maximum size of 2 TB (2^32 sectors x 512 bytes/sector) for each physical disk. This limit is made by the disk driver file (Disk.sys).

Spanned and striped volumes are limited to 32 members each.