System overview

This section describes the various features of Integrated Data Protection.

Integrated Data Protection provides:

Daily backup

Once-daily backups provide minimal required data insurance by protecting against data corruption, accidental data deletion, storage component failure, and site disaster. The daily backup process creates fully recoverable, point-in-time copies of application data.

Successful daily backups ensure that, in a disaster, a business can recover with not more than 24 hours of lost data. The best practice is to replicate the backup data to a second site to protect against a total loss of data in the event of a full site disaster. Most daily backups are saved for 30 to 60 days.

Data replication

Most businesses have some datasets that are too valuable to risk losing up to 24 hours of data. Additionally, if disaster strikes, these more valuable datasets must be recovered quickly.

For datasets that are more valuable, data replication achieves a higher level of data insurance. Multiple snapshots of application data can be created throughout the day. Snapshots are used to restore data to a point in time, to retrieve an individual file, or to copy application data to a different server for testing, data mining, and so on.

Retrieving a copy of the data from an offsite location reduces the worst-case data loss from 24 hours to the time since the last snapshot. Data can be copied synchronously, where the data is updated locally and remotely simultaneously. It can also be copied asynchronously, where there may be a time lag in updating the data remotely.

Typically, data replication is done in addition to daily backup. Replication cannot always protect against data corruption, because a corrupted file replicates as a corrupted file. The best level of data protection is achieved by combining daily backup and continuous replication methodologies.

Business continuity

Business continuity provides application availability insurance by ensuring zero data loss and near-zero recovery time for business-critical data. Data and applications protected with a business continuity product should still use daily backup to provide multi-day point-in-time copies.

Workload mobility

Workload mobility provides data protection by moving the workload to another site in anticipation of a disaster. For example, if a tropical storm is heading for a data center and the decision is made to move critical applications to a data center out of the storm’s path, a good workload mobility design allows that movement to occur easily and with zero downtime.

In addition to data protection purposes, workload mobility is also used for moving applications and data to balance workloads across Converged Systems.

Extended retention of backups

Most businesses have a subset of data with a copy-retention period that spans multiple years. Those data copies are usually retained to meet a specific legal compliance. In the past, long-term retention periods were addressed by placing backup copies on tape and then storing the tapes in an offsite location. Certain Data Domain systems offer a disk-based extended retention feature that delivers a cost-effective alternative to tape.

If there is a business or legal requirement to occasionally export data backups to tape, both Avamar and NetWorker offer solutions. Avamar 7.3 and higher no longer support Avamar Extended Retention with an Avamar Media Access Node. Avamar offers Avamar Data Migration Enabler to export Avamar backups to tape as an alternative solution. For more information about this solution see the Avamar Data Migration Enabler User Guide in the reference materials section of this document.

NetWorker can perform backup or clones to tape within a native NetWorker deployment. For more information about this solution, see the NetWorker Administration Guide in the reference materials section of this document.

PowerProtect Data Manager performs backup to Data Domain, it cannot clone to tape devices. For extended retention, backups can be moved from Data Domain to Cloud Tier.