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Shadow Copy (also known as Volume Snapshot Service, [1] Volume Shadow Copy Service [2] or VSS [2]) is a technology included in Microsoft Windows that can create backup copies or snapshots of computer files or volumes, even when they are in use. It is implemented as a Windows service called the Volume Shadow Copy service.
Traditional backups only restore data from the time the backup was made. True continuous data protection, in contrast to "snapshots", has no backup schedules. [5] When data is written to disk, it is also asynchronously written to a second location, either another computer over the network [6] or an appliance. [7]
Free Azure Cloud Connector for Backup Exec to write data to Microsoft Azure cloud storage; Cloud Connector can be deployed on-premises and in-the-cloud; Backup Exec UI has predefined templates for disk-to-disk-to-cloud and direct-to-cloud backups. support for: Amazon Simple Storage Service (S3) [23] Microsoft Azure Storage [24] Google Cloud ...
Near-CDP backup applications use journaling and are typically based on periodic "snapshots", [16] read-only copies of the data frozen at a particular point in time. Near-CDP (except for Apple Time Machine) [17] intent-logs every change on the host system, [18] often by saving byte or block-level differences rather than file-level differences.
Veeam backup server – a Windows-based physical or virtual machine where Veeam Backup & Replication is installed. It is the core component responsible for all types of administrative activities in a backup infrastructure, including general orchestration of backup, restore and replication tasks, job scheduling and resource allocation .
To avoid downtime, high-availability systems may instead perform the backup on a snapshot—a read-only copy of the data set frozen at a point in time—and allow applications to continue writing to their data. Most snapshot implementations are efficient and can create snapshots in O(1). In other words, the time and I/O needed to create the ...
A disk image is a snapshot of a storage device's structure and data typically stored in one or more computer files on another storage device. [1] [2]Traditionally, disk images were bit-by-bit copies of every sector on a hard disk often created for digital forensic purposes, but it is now common to only copy allocated data to reduce storage space.
Snapshots form the basis for NetApp's asynchronous disk-to-disk replication (D2D) technology, SnapMirror, which effectively replicates Flexible Volume snapshots between any two ONTAP systems. SnapMirror is also supported from ONTAP to Cloud Backup and from SolidFire to ONTAP systems as part of NetApp's Data Fabric vision. NetApp also offers a ...