PowerScale OneFS 9.8.0.0 Backup and Recovery Guide

Managing NDMP restartable backups

An NDMP restartable backup also known as backup restartable extension (BRE) is a type of backup that you can enable in your data management application (DMA). If a restartable backup fails, for example, because of a power outage, you can restart the backup from a checkpoint close to the point of failure. In contrast, when a non-restartable backup fails, you must back up all data from the beginning, regardless of what was transferred during the initial backup process.

After you enable restartable backups from your DMA, you can manage restartable backup contexts from OneFS. These contexts are the data that OneFS stores to facilitate restartable backups. Each context represents a checkpoint that the restartable backup process can return to if a backup fails. There can be only one restartable backup context per restartable backup session. When your DMA restarts a failed backup session, the working files are reverted to the state corresponding to the NDMP restart backup request.

Restartable backups are supported for NetWorker 8.1 and later versions and CommVault Simpana DMAs.