EMC IS1200 Configuration Manual page 44

Glossary
Data Verification
Builds on Auditing and is only available when system auditing is enabled. For
job services like Actionable Services Copy or Move, Legal Hold Copy, and
Single-Step Collections, Data Verification generates an audit trail proving that
files were not altered during these actions. This is especially valuable in
eDiscovery situations.
Deduplication
A process that identifies file duplicates based on their digest values. Digests
are numerical values that are calculated based on file contents and are unique
for all unique file objects. Digest values allow allow file objects to be
compared very quickly. Digests are calculated differently for standard files,
emails, and container objects. For standard files, a digest is computed for the
entire file much like a hash value, for email objects the textual content of the
file and certain specific addresses are combined and a digest value is
calculated from that, container objects are hashed both as a complete file and
as individual sub-objects.
Deduplication may be applied to export processes (Actionable Services like
Download, Export, and Copy) and classification and collection processes to
move only unique copies of files to a destination. When deduplication is used
a "manifest" list or report may be produced to list and identify all the
duplicates that were ignored in the export process, allowing all those
duplicates to be identified later.
If any object, or sub-object, cannot be properly parsed during classification,
no digest is produced for that object preventing duplicates of those objects
from being identified.
Reduplication may also be applied to tagging processes to allow a single file
copy to be reviewed, but apply metadata tags to all its copies.
Domino Sever (Lotus)
A Lotus server providing groupware solutions and storage.
Documentum Sever (EMC)
The EMC Documentum server manages business content including
documents, photos, video, medical images, e-mail, Web pages, fixed content,
XML-tagged documents, etc. The Documentum core is a repository that
stores content securely under compliance rules and appears as a unified
environment, even though content may reside on multiple servers and
physical storage devices within a distributed environment.
eDiscovery
The process of reviewing electronic files to determine their relevances and
responsiveness to a legal matter or case.
eDiscovery Case Manager
A IS1200 web-application that facilitates eDiscovery for Legal Service
Providers.
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