US 2020/0401487 A1 · Efficient Targeted File-Level Restore From Cloud Snapshots

Abstract

Files are identified for file-level restore by bitmaps of cloud snapshots of a storage volume. The bitmaps comprise a data structure for each snapshot containing record numbers of files of the storage volume and a file status bit for each such file that indicates the presence or absence of the file in the corresponding snapshot. File numbers of files of interest are obtained from record numbers of records in a volume files index of the storage volume. The bitmaps can be searched to locate the snapshots containing particular files of interest without the necessity of mounting and searching the separate snapshots on a virtual machine.

Claims19

Dependent claims

A method of targeted file-level restore of one or more files of interest from snapshots of a storage volume in a cloud that stores backup files, comprising:

taking successive snapshots capturing data states of said storage volume at successive times;
creating bitmaps for said snapshots, said bitmaps containing record numbers corresponding to file numbers of said files in said storage volume, and containing a status bit for each record number indicating the status of a corresponding file in each said snapshot;
and
selecting a file of interest for file-level restore from a selected snapshot based upon a status bit of said selected file of interest in a bitmap of said selected snapshot.

1 more element

Dependencies are inferred from the claim text.

Efficient Targeted File-Level Restore From Cloud Snapshots

Life of this patent

Efficient Targeted File-Level Restore From Cloud Snapshots

Life of this patent

Abstract

Claims19