Hyper Dictionary

English Dictionary Computer Dictionary Video Dictionary Thesaurus Dream Dictionary Medical Dictionary


Search Dictionary:  

Meaning of NEW STORAGE SYSTEM

 
Computing Dictionary
 
 Definition: 

(NSS) A major multics implementation project during the 1970s. The initial Multics file system design had evolved from the one-huge-disk world of ctss. When multiple disk units were used they were just assigned increasing ranges of disk addresses, so a segment could have pages scattered over all disks on the system. This provided good i/o parallelism but made crash recovery expensive. NSS redesigned the lower levels of the file system, introducing the concepts of logical volume and physical volume and a mapping from a Multics directory branch to a vtoc entry for each file. The new system had much better recovery performance in exchange for a small space and performance cost.

 

 

COPYRIGHT © 2000-2013 HYPERDICTIONARY.COM HOME | ABOUT HYPERDICTIONARY