cied(7)                    DG/UX 4.30                     cied(7)



     NAME
          cied - AViiON family disk subsystem

     DESCRIPTION
          A cied disk subsystem consists of a VME-based disk
          controller with up to 4 physical ESDI (Enhanced Small Device
          Interface) units on that controller. The units supported are
          as follows:

          Model #  Size
          6442     327 Mbyte full-height non-removable disk
          6661     327 Mbyte half-height non-removable disk
          6555     648 Mbyte full-height non-removable disk

          A physical disk unit may be accessed directly via the
          special file nodes in /dev/pdsk and /dev/rpdsk.  These nodes
          are named in the form:

          /dev/[r]pdsk/cied@<n>(<addr>,<m>)

          where <n> is the hexadecimal device code of the controller,
          <addr> is the control space starting address for the
          controller, and <m> is the unit on the controller.  The
          nodes in /dev/pdsk provide access as a block special device
          as described in dsk(7).  The nodes in /dev/rpdsk provide
          access as a character special device as described in
          rdsk(7).  When accessing a disk through a /dev/pdsk or
          /dev/rpdsk node, the operating system performs no bad block
          remapping.

     FILES
          /dev/pdsk/*

          /dev/rpdsk/*

     SEE ALSO
          cird(7), dsk(7), rdsk(7).


















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