From HowToGeek

Block Level Backup Engine Service allows for a Complete PC backup at the block level of the Hard Drive, versus file by file. This means you get an image of the hard drive

Contents 1 Overview 2 Related How-To Geek Articles 3 See Also 4 References

Overview

wbengine.exe This service backs up your PC at the block level and not file by file. This essentially means creating an image of the drive. This service is part of Vista's drive backup capability. This feature is only available in Vista Business, Enterprise, and Ultimate and is set to manual. There is no performance gain by disabling this service. Basic and Home Vista users can use a third party backup application to achieve the same function.

Related How-To Geek Articles

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See Also

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List of Windows Components v
Features	Windows Aero - System Restore - Previous Versions - SuperFetch - User Account Control (UAC) - Offline Files - ReadyDrive - Instant Search - Windows Sidebar - Parental Controls - Speech Recognition - ClearType - DirectX 10 - ReadyBoost - BitLocker - Flip3D - Remote Desktop - Search Folders - Tablet PC - Windows SideShow
Services	Task Scheduler - Desktop Window Manager - Application Experience - Application Host Helper Service - Application Information - Application Layer Gateway Service - Application Management - Background Intelligent Transfer Service - Base Filtering Engine - Block Level Backup Engine Service - Certificate Propagation - COM+ Event System - Computer Browser - DHCPClient
Applications	Notepad - Windows Mail - Internet Explorer - Command Prompt (Cmd.exe) - Windows Calendar - Mobility Center - Task Manager - Photo Gallery - Windows Media Center - Windows Media Player - Wordpad - Windows Sidebar - Snipping Tool - Windows Contacts - Device Manager - Disk Defragmenter - Event Viewer - Fax and Scan - Windows Journal - Windows Meeting Space - Windows DVD Maker - Windows Easy Transfer
Security	User Account Control (UAC) - Windows Defender - Windows Firewall
Admin Tools	Control Panel - Device Manager - Microsoft Management Console (MMC)