For more information, click the following article number to view the article in the Microsoft Knowledge Base:. The English version of this hotfix has the file attributes or later file attributes that are listed in the following table. When you view the file information, it is converted to local time. Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. Issues that are fixed in this hotfix rollup package This hotfix rollup package fixes the following two issues that were not previously documented in a Microsoft Knowledge Base article.
The disk has multiple partitions volumes. You create a new partition at the beginning of the disk. Resolution Hotfix information A supported hotfix is available from Microsoft.
Need more help? Expand your skills. Get new features first. Correctly performing backup and restore operations requires close coordination between the backup applications, the line-of-business applications that are being backed up, and the storage management hardware and software.
When all the components support VSS, you can use them to back up your application data without taking the applications offline. VSS coordinates the actions that are required to create a consistent shadow copy also known as a snapshot or a point-in-time copy of the data that is to be backed up.
The shadow copy can be used as-is, or it can be used in scenarios such as the following:. You want to back up application data and system state information, including archiving data to another hard disk drive, to tape, or to other removable media. VSS service Part of the Windows operating system that ensures the other components can communicate with each other properly and work together. VSS requester The software that requests the actual creation of shadow copies or other high-level operations like importing or deleting them.
Typically, this is the backup application. VSS writer The component that guarantees we have a consistent data set to back up. VSS writers for various Windows components, such as the registry, are included with the Windows operating system. Non-Microsoft VSS writers are included with many applications for Windows that need to guarantee data consistency during back up.
VSS provider The component that creates and maintains the shadow copies. This can occur in the software or in the hardware. The Windows operating system includes a VSS provider that uses copy-on-write. A hardware provider offloads the task of creating and maintaining a shadow copy from the host operating system. The following diagram illustrates how the VSS service coordinates with requesters, writers, and providers to create a shadow copy of a volume. This section puts the various roles of the requester, writer, and provider into context by listing the steps that need to be taken to create a shadow copy.
The following diagram shows how the Volume Shadow Copy Service controls the overall coordination of the requester, writer, and provider. The requester asks the Volume Shadow Copy Service to enumerate the writers, gather the writer metadata, and prepare for shadow copy creation. Each writer creates an XML description of the components and data stores that need to be backed up and provides it to the Volume Shadow Copy Service.
The writer also defines a restore method, which is used for all components. The Volume Shadow Copy Service provides the writer's description to the requester, which selects the components that will be backed up. The Volume Shadow Copy Service notifies all the writers to prepare their data for making a shadow copy. Each writer prepares the data as appropriate, such as completing all open transactions, rolling transaction logs, and flushing caches. When the data is ready to be shadow-copied, the writer notifies the Volume Shadow Copy Service.
The application freeze is not allowed to take longer than 60 seconds. The Volume Shadow Copy Service flushes the file system buffers and then freezes the file system, which ensures that the file system metadata is recorded correctly and the data to be shadow-copied is written in a consistent order. The Volume Shadow Copy Service tells the provider to create the shadow copy.
At this point applications are free to resume writing data to the disk that is being shadow-copied. The shadow copy creation can be aborted if the writers are kept in the freeze state for longer than 60 seconds or if the providers take longer than 10 seconds to commit the shadow copy.
The requester can retry the process go back to step 1 or notify the administrator to retry at a later time. If the shadow copy is successfully created, the Volume Shadow Copy Service returns the location information for the shadow copy to the requester.
In some cases, the shadow copy can be temporarily made available as a read-write volume so that VSS and one or more applications can alter the contents of the shadow copy before the shadow copy is finished.
After VSS and the applications make their alterations, the shadow copy is made read-only. This phase is called Auto-recovery, and it is used to undo any file-system or application transactions on the shadow copy volume that were not completed before the shadow copy was created. A hardware or software shadow copy provider uses one of the following methods for creating a shadow copy:. Complete copy This method makes a complete copy called a "full copy" or "clone" of the original volume at a given point in time.
This copy is read-only. Copy-on-write This method does not copy the original volume. Redirect-on-write This method does not copy the original volume, and it does not make any changes to the original volume after a given point in time. Instead, it makes a differential copy by redirecting all changes to a different volume.
After the mirror connection is broken, the original volume and the shadow copy volume are independent. The shadow copy storage area can be on the same volume or a different volume. Quick access. Search related threads. Remove From My Forums. Answered by:. Archived Forums. File Services and Storage. Sign in to vote. Hi all Not sure if it is the right forum to post. I have a question with my Windows VSS.
It does say which KB's it replaces, but doesn't say it was superceded by anything, so maybe that means it is the latest But I do have Premier support so I'll open a case and see what they say is the latest and report back to you and accept your answer.
Were you ever able to resolve this? I opened the case and they said basically what we already discussed here. Sign up or log in Sign up using Google. Sign up using Facebook.
Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Making Agile work for data science. Stack Gives Back Featured on Meta.
New post summary designs on greatest hits now, everywhere else eventually.
0コメント