NAME

drum − paging device

DESCRIPTION

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

/dev/drum

BUGS

Reads from the drum are not allowed across the interleaving boundaries.  Since these only occur every 1 Mbyte or so, and since the system never allocates blocks across the boundary, this is usually not a problem. 

CX/UX Administrator’s Reference