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system restore and volume shadow copy


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#1 acerts04

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Posted 24 April 2013 - 08:44 PM

hey everyone, i am curious if volume shadow copy needs to be enabled in windows 7 in order for system restore to work? i have read that VSC should always be on, but on my laptop it was not. if i needed to restore back to one of my restore points say, 6 months from now, and i didnt have VSC on, would i run into trouble trying to use my restore point? just a question out of curiosity

 

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#2 quietman7

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Posted 24 April 2013 - 09:37 PM

The Volume Shadow Service (VSS), sometimes referred to as Volume Shadow Copy or Volume Snapshot Service, is a service that allows you to restore certain system files to an earlier point in time. VSS creates most of the files it needs in the System Volume Information Folder which can be found on the root of each volume. This folder is locally accessed by System Restore when reverting to an entire previous set of shadow copies called Restore points. When the system needs to be restored, files and settings are copied from the shadow copy to the live volume used by Windows 7 (and Vista).
 

Volume Shadow Copy is a service that creates and maintains snapshots (shadow copies) of disk volumes in Windows 7 and Vista. It is the back-end of the System Restore feature, which enables you to restore your system files to a previous state in case of a system failure (e.g. after a failed driver or software installation).

What you should know about Volume Shadow Copy/System Restore in Windows 7 & Vista (FAQ)

Microsoft Software Shadow Copy Provider in Windows 7
System Restore and Shadow Copy
How Volume Shadow Copy Service Works
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#3 acerts04

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Posted 25 April 2013 - 08:44 PM

thank you for the input sir, I kind of understand what vsc is, but what I am curious about is if it should be enabled? and if it was not enabled, would system restore fail? also, do restore points go away over time? is there anyway to not make them disappear over time?

 

thank you

alex


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#4 quietman7

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Posted 26 April 2013 - 09:21 AM

Microsoft recommends not to disable the Volume Shadow Copy Service or you will lose System Restore and recovery functionality.

How can I disable VSS?

It is possible to disable the Volume Shadow Copy Service by using the Microsoft Management Console. However, you should not do this. Disabling VSS adversely affects any software you use that depends on it, such as System Restore and Windows Server Backup.

Volume Shadow Copy Service

This is the information provided by Microsoft in the Volume Shadow Copy Services (local) provided in the Component Services Extended tab.

Description: Manages and implements volume Shadow Copies used for backup and other purposes. If this service is stopped, shadow copies will be unavailable for backup and the backup may fail. If this service is disable, any services that explicitly depend on it will fail to start.



By design System Restore runs in the background and when monitoring is enabled, will automatically create a new restore point every 24 hours (system checkpoints). Restore points can also be manually created by the user at any time. When the allotted disk space is reached the oldest restore point will be purged on a first in first out (FIFO) basis. Otherwise, restore points over 90 days are purged automatically in order to keep the volume's usage within the specified amount. All restore points will eventually be deleted after the time specified in the RPLifeInterval registry setting is reached or earlier if allotted disk space is insufficient so it is not possible to create a permanent restore point.

Understanding System Restore in Windows 7 (FAQs)
Understanding System Restore in Windows Vista (FAQs)
Understanding System Restore in Windows XP
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