NAME    [Toc]    [Back]

     drum - paging device

DESCRIPTION    [Toc]    [Back]

     This file refers to the paging device in use by the  system.
This may actually
  be  a subdevice of one of the disk drivers, but in a
system with
     paging interleaved across multiple disk drives  it  provides
an indirect
     driver for the multiple drives.

FILES    [Toc]    [Back]

     /dev/drum

HISTORY    [Toc]    [Back]

     The drum special file appeared in 3.0BSD.

BUGS    [Toc]    [Back]

     Reads  from the drum are not allowed across the interleaving
boundaries.
     Since these only occur every .5Mbytes or so, and  since  the
system never
     allocates  blocks across the boundary, this is usually not a
problem.

OpenBSD      3.6                           June      5,      1993