Is the TSM  6.x guide due out next month or april? I assume there will
be a New Concepts guide  at some point also.

Regards
Tim

Zoltan Forray/AC/VCU wrote:

From the as yet unpublished (e.g. subject to change) "Upgrade Guide" under

"What's New"

Data deduplication
Data deduplication is a method of eliminating redundant data in
sequential-access disk (FILE) primary, copy, and active-data storage
pools. One unique instance of the data is retained on storage media, and
redundant data is replaced with a pointer to the unique data copy. The
goal of deduplication is to reduce the overall amount of time that is
required to retrieve data by letting you store more data on disk, rather
than on tape.

Data deduplication in Tivoli Storage Manager is a two-phase process. In
the first phase, duplicate data is identified. During the second phase,
duplicate data is removed by certain server processes, such as reclamation
processing of storage-pool volumes. By default, a duplicate-identification
process begins automatically after you define a storage pool for
deduplication. (If you specify a
duplicate-identification process when you update a storage pool, it also
starts automatically.) Because duplication identification requires extra
disk I/O and CPU resources, Tivoli Storage Manager lets you control when
identification begins as well as the number and duration of processes.

You can deduplicate any type of data except encrypted data. You can
deduplicate client backup and archive data, Tivoli Data Protection data,
and so on. Tivoli Storage Manager can deduplicate whole files as well as
files that are members of an aggregate. You can deduplicate data that has
already been stored. No additional backup, archive, or migration is
required.

For optimal efficiency when deduplicating, upgrade to the version 6.1
backup-archive client.

Restriction: You can use the data-deduplication feature with Tivoli
Storage Manager Extended Edition only.



"Tyree, David" <david.tyree AT SGMC DOT ORG>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
02/20/2009 08:52 AM
Please respond to
"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>


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Subject
[ADSM-L] TSM 6.x and dedupe






           Can users of TSM 6.x comment on it's data dedupe
functionality? I'm curious as to how it functions and would like some
info about it.



David Tyree
Interface Analyst
South Georgia Medical Center
229.333.1155

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