| New Storage System (NSS) A major implementation project during the 1970s. The initial Multics design had evolved from the one-huge-disk world of . When multiple disk units were used they were just assigned increasing ranges of disk addresses, so a could have scattered over all disks on the system. This provided good but made expensive. NSS redesigned the lower levels of the file system, introducing the concepts of and and a mapping from a Multics directory branch to a entry for each file. The new system had much better recovery performance in exchange for a small space and performance cost. (1997-01-29) |
на заглавную 
к началу страницы