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IBM System Storage N series Software Guide
book

IBM System Storage N series Software Guide

by Roland Tretau, Christian Fey, Michael Klimes, Steven Pemberton, Tom Provost, Danny Yang
July 2014
Intermediate to advanced content levelIntermediate to advanced
634 pages
18h 13m
English
IBM Redbooks
Content preview from IBM System Storage N series Software Guide
Deduplication
This chapter describes the benefits and functions of deduplication on space saving.
Deduplication is an optional feature of Data ONTAP that significantly improves physical storage space by eliminating duplicate data blocks within a FlexVol volume.
Deduplication works at the block level on the active file system, and uses the WAFL block-sharing mechanism. Each block of data has a digital signature that is compared with all other signatures in a data volume. If an exact block match exists, the duplicate block is discarded and its disk ...
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Publisher Resources

ISBN: 0738439649Purchase book