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Installation and User's Guide

Installation and User's Guide

Installation and User's Guide

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Related reference“Deduplication”DeduplicationUse the deduplication option to specify whether to enable redundant client-sidedata elimination when data is transferred to the Tivoli Storage Manager serverduring backup <strong>and</strong> archive processing.Data deduplication is disabled if the enablelanfree or subfilebackup options are set.Tivoli Storage Manager client encrypted files are excluded from client-side datadeduplication. Files from encrypted file systems are also excluded.To support client-side data deduplication, the following criteria must be met:v Client-side data deduplication for the node is enabled on the Tivoli StorageManager server.v The storage pool destination for the data must be a storage pool that is enabledfor data deduplication. The storage pool must have a device type of "file".v A file can be excluded from client-side data deduplication processing (by defaultall files are included).v The server can limit the maximum transaction size for data deduplication bysetting the CLIENTDEDUPTXNLIMIT option on the server. Refer to theAdministrator's <strong>Guide</strong> for details.v The file size must be larger than 2 K.Supported ClientsThis option is valid for all clients. This option is also valid on the Tivoli StorageManager client API.Options FilePlace this option in the client options file (dsm.opt). You can set this option byselecting the Deduplication → Enable Deduplication check box of the Preferenceseditor. The option can be set in the client option set on Tivoli Storage Managerserver.Syntax►►DEDUPLicationNoYes►◄ParametersNo Specifies that you do not want to enable client-side data deduplication forbackup <strong>and</strong> archive processing. No is the default.YesSpecifies that you want to enable client-side data deduplication for backup <strong>and</strong>archive processing.336 IBM Tivoli Storage Manager for Windows Backup-Archive Clients: <strong>Installation</strong> <strong>and</strong> <strong>User's</strong> <strong>Guide</strong>

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