A recovery block scheme for a VAX11/750 running unix
Philip Hobley, Peter H. Jesty · Software Practice and Experience · 1988
Abstract In this paper we describe an implementation of a scheme that is widely used in software fault tolerance, the recovery block scheme. This scheme is usually implemented using special purpose hardware and software. Our implementation runs on a VAX11/750 which has not been modified in any way. This machine uses a very slightly altered version of Berkeley's 4.2 Unix Unix is a trademark of AT&T Bell Laboratories in the USA and other countries. .