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You can safely conduct backups through LiteSpeed, when TSM client-side data deduplication is enabled. For more information about the Fast Compression feature, please refer to the LiteSpeed User Guide. This form of backup deduplication does not have any performance impact. For more information, see Fast Compression. When configured, Fast Compression will intelligently back up only database changes rather than the entire database. Using Fast Compressionįast Compression reduces the backup footprint another 70-85% over what you can already get with LiteSpeed compression. For more information, see Compression Methods.įor more information about the LiteSpeed compression options, please refer to the LiteSpeed User Guide.
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With Adaptive Compression, LiteSpeed will dynamically change the compression level based on available server resources. This ensures the footprint of the backup on the network is minimal.įor optimal performance, you can use the Adaptive Compression feature. Database backup sizes within a range of 15-30% of the original database size are fairly common. If you use LiteSpeed compression, the database pages will get compressed, and then the compressed data stream is sent to the TSM server. (The above graphic is adapted from a similar image at Using LiteSpeed Compression The TSM client processes the backup and restore requests from SQL server and translates them into TSM backup and restore requests. The user conducts the backup/restores from LiteSpeed, using TSM-specific parameters. Generally, the TCP/IP address of the TSM Server and the port number that it is listening on are stamped in the client option file. The client uses a configuration file called client option file to locate the TSM server.
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TSM backups conducted through LiteSpeed are transferred to and then stored in and/or managed by the Tivoli Storage Manager. The following diagram shows a very simple, high-level overview of the LiteSpeed/TSM integration:
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Overview of IBM Spectrum Protect (TSM) Integration Using LiteSpeed with TSM combines the small, secure, and rapid backups of LiteSpeed with the state-of-the-art storage and retrieval system of TSM. LiteSpeed complement Tivoli's restore process by reducing the size of the database backups that need to be handled during a restore scenario. Any DBA can write a script and effectively start sending their SQL Server backups to TSM directly.īecause the backup data stream is compressed as part of the backup process this effectively reduces the network footprint of the backup as it transits across the network from the database server to storage. LiteSpeed interfaces with the TSM through the TSM API, allowing users to conduct backups directly to TSM using LiteSpeed T-SQL commands or the LiteSpeed command-line utility. LiteSpeed's low-impact, high-performance compression and encryption technology helps reduce storage costs and protect data, while maintaining a high level of recoverability. LiteSpeed® for SQL Server®, or LiteSpeed, is a fast and flexible backup and recovery solution that allows database administrators to easily maintain complete control over the backup and recovery process. TSM is a data backup and storage solution used in many large enterprises. IBM Spectrum Protect™ (Tivoli Storage Manager - TSM) and LiteSpeed integrate to cover a very broad range of enterprise storage solutions, and therefore is a critical part of any major corporation's disaster recovery strategy. Obtenir une assistance en matière de licenceĪbout Using IBM Spectrum Protect (TSM) with LiteSpeed.