people. But disasters tend to happen to entire facilities, not just a portion of the equipment inside those facilities. Using Tivoli Storage Manager, you can prepare an additional copy of the active data for safekeeping at an off-site location to provide extra insurance against disasters. If a disaster strikes and destroys online storage and computers, the off-site copy of the active data can be restored to new computers to get business up and running quickly.
Archive and retrieve Tivoli Storage Manager goes beyond data backups to include data archiving. Archiving inactive data is an effective way to reduce your online storage costs. The archive process creates a copy of a file or a set of files representing an end point of a process for long-term storage. Files can remain on the local storage media or can be deleted. The customer determines the retention period (how long an archive copy is to be retained). TSM also provides retrieval functionality to fetch the archived data for usage. The retrieval process locates the copies in the archival storage and places them back into a customer-designated system or workstation.
Hierarchical Storage Management Tivoli Storage Manager includes an automated version of archive called Hierarchical Storage Management (HSM), which provides the automatic and transparent movement of operational data from the user system disk space to a central storage repository. If the user accesses this data, it is dynamically and transparently restored to the client storage. As with archiving, HSM removes data from online storage and puts it on less expensive offline storage. Unlike archiving, HSM leaves a data-stub on online storage that shows the name of the removed file. With this stub, you can easily access the offline data, albeit much more slowly than if it were online. HSM capabilities are automated. It watches online data files to see how often they are used. If the data are not opened for an administrator-specified length of time, they will be removed to offline storage, leaving only the data -stub behind. For a business with large amounts of data that do not need to be online at all time, HSM is the best way to save on storage costs.
Application protection - 24x365 By directly controlling the time and method by which a data transfer to offline storage occurs, the application can continue operating with no interruption, 24 hours a day, 365 days a year.
Chapter 2. Content Manager base products
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