Today’s Database Data Protection Problems
- Backup and recovery methods that are based on decades-old nightly backups paradigm, where up to a day’s worth of data can be lost on every restore
- High backup overhead on production servers and networks for processing all database data during backups, whether it has changed or not
- Ever-increasing backup windows due to non-stop data growth
- Backup appliances that cannot scale to protect the hundreds to thousands ofdatabases in the data center
- Poor visibility and control of the full data protection lifecycle, from disk to tape to replication
Introducing Zero Data Loss Recovery Appliance
Eliminate Data Loss
Minimal Impact Backups
- Most deduplication appliances require periodic full backups. Full backups read the entire database which creates a heavy impact on production storage, servers, and networks.
- Somededuplicatingappliancesperformsource-sidededuplicationonproduction systems to reduce network requirements. This imposes high CPU and memory loads on production servers.
- Incrementalbackupsarerelativelyfast,butapplyingtheincrementalbackupto restored data files during recovery is very expensive, especially as this operation usually runs across the network.
Delta StoreDelta Store represents the “brains” of the Recovery Appliance software engine. Delta Store validates the incoming changed data blocks, and then compresses, indexes and stores them. These changed blocks are the foundation of Virtual Full Database Backups, which are space-efficient pointer-based representations of physical full backups as of the point-in-time of an incremental backup. Virtual full backups can improve storage efficiency by 10 times or more depending on the data set and change rate of the protected database.
The space efficiency of the Delta Store architecture enables a large number of Virtual Full Backups to be kept online, greatly extending the disk based recovery window.
When a restore operation is required, Delta Store efficiently recreates a physical full backup based on the closest incremental backup time. The restore operation is supported by the massive scalability and performance of the underlying hardware architecture of the Recovery Appliance. Restoring from a Recovery Appliance eliminates the slow traditional process of restoring a full backup and then sequentially restoring and applying all relevant incremental backups.
Most Backup Operations Offloaded
Practically all backup-related processing is offloaded to the Recovery Appliance. This includes time-consuming compression, backup deletion, validation, and maintenance operations. This frees production system resources, even outside the backup window, which increases the performance of the production systems.
To summarize, with Real-time Redo Transport and Delta Push, protected databases do the minimum possible backup-related work – transmitting only the changed data to the Recovery Appliance. All other backup and recovery related processing, including tape backup, is handled by the Recovery Appliance. This is one of the core architectural innovations of the Recovery Appliance, above and beyond today’s backup solutions.