Managing a backup procedure

摘要

A method for managing a backup procedure is described. In one embodiment, the method includes performing a first backup of a dataset, selecting a value N, dividing the dataset into N segments, and upon writing at least the portion of the dataset to the second storage system, performing a first rewrite. Each segment of the dataset includes 1/Nth of the dataset. The first backup includes writing at least a portion of the dataset from a first storage system to a second storage system. The first rewrite includes writing a first segment of the dataset from the first storage system to the second storage system.

主权项

1. A method for managing a backup procedure, comprising:
performing a first backup procedure, wherein the first backup procedure comprises writing at least a portion of a dataset from a first storage system to a second storage system and is stored as a full backup file; dividing the dataset into N segments, each segment of the dataset comprising 1/Nth of the dataset; and performing N subsequent partial backup procedures, wherein for each of the N subsequent partial backup procedures, the method comprises:
identifying new or changed data corresponding to the dataset on the first storage system since a previous backup procedure and storing the new or changed data from the first storage system to the second storage system; andrewriting one of the N segments from the first storage system to the second storage system, such that each of the N segments is rewritten from the first storage system to the second storage system once during the N subsequent backup procedures and is stored as a segment backup file, wherein a complete restore can be produced from the segment backup files without the full backup file.