V11 SP8

Overview - 1-Touch for Windows


The Commvault 1-Touch recovery solution, often referred to as Bare Metal Recovery is used to quickly recover a failed computer. By automatically rebuilding the operating system, you can recover systems with defective components such as inaccessible volumes or failed disks without the need to manually reinstall the individual software packages or operating systems.

Depending on client environment, you can use the CommCell Console or the 1-Touch wizard to run the recovery process. The 1-Touch recovery process secures the required information from the client's backup and then uses this information to re-create the client environment.

Windows clients do not require a 1-Touch server. The required information for 1-Touch recovery is available on the CommServe and the Windows Live CD.

Key Features

The 1-Touch Recovery involves the following key features:

Fully Unattended Operating System Reinstall

You can initiate the recovery process of a single or multiple clients from a central location, such as the CommServe.

Point-in-Time Restore

Using the 1-Touch recovery solution, you can restore the system state of a client using the specific date and time when the system state backup was performed.

Support for Block-Level Backups

You can perform a recovery operation from block-level backups. Restores from block-level backups are faster. In addition, data integrity is ensured because block-level backups engage Volume Shadow Copy Service (VSS) writers and generate a crash-consistent snapshot of the system volume.

Cross Hardware Restore

You can perform the 1-Touch Recovery to a target Windows client with completely different hardware configurations. The target system can have different network interface adapters, mass storage devices, video adapters, motherboards, and CPUs.


The 1-Touch documentation uses the following terminology:


A computer that has the File System iDataAgent installed on it.

Live CD

A CD used to boot the client for 1-Touch recovery.

Dissimilar Disk Restore

This term is used in the 1-Touch recovery of Windows clients. When the disk configuration of the restored system is different than that of the backed up system, you need to perform a Dissimilar Disk Restore.

ISO Image

This is a file that contains all the information required to initiate the 1-Touch recovery. Use this file to create the Live CD.

Offline Restore

This term is used in the 1-Touch recovery of Windows clients. A recovery procedure in which the operating system is restored and not re-installed. An access to 1-Touch server is not required to perform the Offline Restore.

Answer File

The client answer file contains information such as the computer name, operating system, IP address, and disk partition/format information. This information is used during the 1-Touch Recovery for silent deployment of operating system and restoration of the client.

For more terms, refer to Glossary.