HP UNIX - Device file name conversion

Both HP-UX and Sun Solars uses almost same device file naming convention. Typically it look like as follows:
c#t#d#
Let us try to understand what those letters
  • c - Instance number of interface card
  • t - SCSI target address
  • d - Device number aka SCSI LUN
Use ioscan command to get information about your device under HP-UX. A block device file is always in /dev/dsk and a character device file in /dev/rdsk directory.
  • /dev/dsk/c0t5d0 - Block device file
  • /dev/rdsk/c0t5d0 - Raw device file

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