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HP-UX (Hewlett Packard UniX) is Hewlett-Packard's proprietary software implementation of the Unix operating system, based on UNIX System V (initially UNIX System III). It runs on their PA-RISC range of central processing unit processors and Intel's Itanium processor, and was also available for later Apollo/Domain systems. Earlier versions also ran on the HP 9000 Series 200, 300, and 400 computer systems based on the Motorola 68000 series of processors, as well as the HP 9000 Series 500 computers based on HP's proprietary FOCUS (hardware) processor architecture.

HP-UX was the first Unix to use access control lists for file access permissions rather than the standard Unix permissions system. HP-UX was also among the first Unix systems to include a built-in logical volume management. HP has had a long partnership with VERITAS Software, and they use VxFS as their primary file system. For legacy as well as technical reasons, however, the file system used for the boot Kernel (computer science) has remained Hi Performance FileSystem (HFS; a variant of Unix File System) and so this older technology has continued to receive support from HP.

As of HP-UX 11i v2 release, the operating system will scale as follows:

  • 128 Central processing unit (expandable to 256)
  • 1 Terabyte main Random access memory
  • 32 TB maximum file system
  • 2 TB maximum Computer file


Pages in category "HP-UX"

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