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New Storage System

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(storage)New Storage System - (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.


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Thus, to swap out an old storage system, the archivist adds the new storage system IP address to the list of storage addresses represented by the logical storage system name, replicates each digital entity onto the new storage system, and then removes the old storage system.
Prototype preservation environments by Marciano, Richard / Library Trends
With traditional storage systems when customers run out of hardware resources they have to buy a completely new storage system with the same limitations as the previous system.
Clustered network storage: part two; An evolution in storage by Asaro, Tony / Computer Technology Review
debut of a new storage system that it not only designed but is manufacturing through a subsidiary.
Taking shape: Nectar Design has thrived with an unconventional ... by Darmiento, Laurence / Los Angeles Business Journal
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