IBM E16RMLL-I Implementation Guide - Page 47
Integrated backup/restore scenarios
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At this point, it is very important that you consider your backup and restore requirements so that you can match the Tivoli Storage Manager features to your needs. Since statistics show that the majority of user restore requests are for single files or other small amounts of data, the Tivoli Storage Manager file-level backup is the foundation of any recovery strategy. However, there are additional methods to cover your data restore requirements more completely. Tivoli Storage Manager provides the following backup methods: File-level backup: Good for small and ad-hoc file or directory restores, but may not be the optimal solution for large-volume restores. Logical volume backup: Good for large full restores, but only available on UNIX and Windows, and not for single file restores. Backup sets: Good for remote and portable restores. Figure 2-1 shows some possible generic scenarios. Of course, you can combine those in different ways to fit your own requirements. Integrated backup/restore scenarios 1. Progressive incremental backup and archive function File-level granularity of restore 1 2. Logical volume backup (UNIX) Restore of raw devices and full logical volumes 2 3. Progressive incremental + periodical image backup Fast restore in case of disaster recovery scenario 3 Unique command to restore at the point in time Backup sets Portable, Lan-free restore IBM QIC-5010 Data Cartridge IBM QIC-5010 Data Cartridge IBM QIC-5010 Data Cartridge Client Server Figure 2-1 Tivoli Storage Manager backup/restore scenarios Due to the nature and complexity of customer environments and requirements, our planning description will give the building blocks for your own environment definition. The tables and calculations take into account the backup, archive, Chapter 2. Implementation planning 17
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