HPFS (High Performance File System)

HPFS (High Performance File System) is the file system introduced with IBM's OS/2 Version 1.2. HPFS is noted for handling large files (2 gigabytes) across multiple hard disk volumes (addressable up to 2 terabytes) and long file names (up to 256 bytes).

HPFS (High Performance File System) is the file system introduced with IBM's OS/2 Version 1.2. HPFS is noted for handling large files (2 gigabytes) across multiple hard disk volumes (addressable up to 2 terabytes) and long file names (up to 256 bytes). HPFS was designed to get around several limitations at the time in MS-DOS, among them its eight-character name restriction. HPFS uses a centrally-located root directory and B-tree lookup to speed access. HPFS can coexist with the MS-DOS file system, File Allocation Table (FAT), or run independently.

Among the benefits of HPFS:

  • Contiguous storage of extended attributes (without the EA DATA.SF file used by FAT)
  • Resistance to file fragmentation
  • Small cluster size
  • Support for larger file storage devices (up to 512 GB)
  • Speedier disk operation

Among the drawbacks:

  • Requires more system memory
  • HPFS partitions are not visible to MS-DOS, so if you need to boot from a floppy disk, it could be inconvenient.
  • Native DOS needs a special utility (Partition Magic from PowerQuest) to access a HPFS partition
This was first published in September 2005

Continue Reading About HPFS (High Performance File System)

Glossary

'HPFS (High Performance File System)' is part of the:

View All Definitions

Dig deeper on IT Career Development and Training

Pro+

Features

Enjoy the benefits of Pro+ membership, learn more and join.

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchServerVirtualization

SearchCloudComputing

SearchExchange

SearchSQLServer

SearchWinIT

SearchEnterpriseDesktop

SearchVirtualDesktop

Close