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Data Recovery Profile
Organizations require a business continuance strategy that ensures valuable data is protected and applications can be recovered rapidly -- if not instantaneously. A business continuance strategy is dependent on replicating any component of the data center that can fail. Redundancy is one key strategy today; however, self-healing systems may eliminate this requirement in the distant future. Given the essential role that IT provides in most businesses worldwide, the majority of data-related problems are discovered fairly quickly and, therefore, the majority of data-recovery operations begin within a short time following the failure. On the average, approximately 90 percent of all data-recovery operations occur within 24 hours after the initial problem. This means that the problem was detected within 24 hours and corrective actions were taken. Nearly 95 percent of all data recoveries are completed within one week of the problem detection, and over 99 percent of all data recoveries occur within a month.
Backup and recovery were the very first data protection and storage management applications, and their roles are now of critical importance. It is important to understand the RTO (Recovery Time Objective), the RPO (Recovery Point Objective) and the DPW (Data Protection Window) or the maximum amount of time that a system can be paused for a recovery operation without impacting business operations. These observations have enabled low-cost SATA disk systems to address more of the backup and recovery requirements than in the past since most of the recoveries occur in a short period of time following the failure. As the probability of recovering backed-up data quickly diminishes over time, the need to keep the backup data on disk for faster recovery also declines over time. In general, after a month, keeping backup data on disk is not economical and the decision point to delete the backup data, continue to back up the data on disk, or move it to archival status presents itself. Determining the optimal data protection strategy for specific data classifications can be complicated and resource intensive.
Source: Horison Information Strategies: Storage Navigator
© 2005 Horison
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