知识库 - Acronis

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1. Start the command prompt with elevated privileges:

Start -> CMD -> Right click -> Run as Administrator

2. Enter the Diskshadow tool interface:

C:\Users\administrator> DISKSHADOW

3. Specify that the shadow copies will persist across program exit, reset, or restart:

DISKSHADOW> set context persistent

4. Set the verbose output on:

DISKSHADOW> set verbose on

5. Start a full backup session:

DISKSHADOW> begin backup

6. Specify the volumes to be included in the backup, e.g.:

DISKSHADOW> add volume C: alias VolumeC

DISKSHADOW> add volume D: alias VolumeD

7. Specify the writers that should be verified during the shadow copy creation: specify the ID of VSS writer(s) from the error message that you receive, e.g for System Writer:

DISKSHADOW> writer verify {E8132975-6F93-4464-A53E-1050253AE220}

You can find IDs of other VSS writers on the machine by running vssadmin list writers command in the Command prompt
![image-20200416092038133.png](/open.file/download?fileNo=245)
8.After you have specified all volumes and writers for backup, initiate the snapshot creation:

DISKSHADOW> create

After shadow copy is created, terminate the backup:

DISKSHADOW> end backup

Exit the Diskshadow tool:

DISKSHADOW> exit

During backup creation you will see messages similar to the following appearing in the command prompt, meaning that a particular component has been included into backup procedure and will be verified:

* Writer "System Writer" is included:
+ Component is included: \System Files

If one of the writers fails, you might see an error message similar to the following:

ERROR: The selected writer "SqlServerWriter" is in a faulty state.
- Status: 8 (VSS_WS_FAILED_AT_PREPARE_SNAPSHOT)
- Writer Failure code: 0x (VSS_E_WRITERERROR_NONRETRYABLE)
- Writer ID: {a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}
- Instance ID: {8c57ad9a-8055-49e0-96ec-d8b41ea327eb}

Error on recent operation.
- HRESULT (returned): 80042301
- Error text: VSS_E_BAD_STATE

If snapshot is created successfully, you will see a message Number of shadow copies listed: 1 (or more, depending on how many volumes you selected). See example on the screenshot below:
![image-20200416092050922.png](/open.file/download?fileNo=246)
In case there is no such line Diskshadow backup must not be considered as successful.

内容

1.  以管理员身份启动命令提示符:
Start -> CMD -> Right click -> Run as Administrator

1.  进入Diskshadow工具界面:
C:\Users\administrator> DISKSHADOW

1.  指定卷影副本将在程序退出、重置或重新启动时持续存在：
DISKSHADOW> set context persistent

1.  打开详细输出设置:
DISKSHADOW> set verbose on

1.   开始一个完整备份会话
DISKSHADOW> begin backup

1.  指定要包含在备份中的卷，例如：
DISKSHADOW> add volume C: alias VolumeC
DISKSHADOW> add volume D: alias VolumeD

1.  指定在卷影副本创建期间应验证的Writer：从收到的错误消息中指定 VSS Writer 的ID，例如，针对System Writer
DISKSHADOW> writer verify {E8132975-6F93-4464-A53E-1050253AE220}
通过在命令提示符下运行vssadmin list writers命令，可以在计算机上找到其他 VSS Writer的ID。
![image-20200416092038133.png](/open.file/download?fileNo=245)

1.   指定所有卷和写入器进行备份后，启动快照创建：
DISKSHADOW> create

 创建卷影副本后，终止备份：
  DISKSHADOW> end backup

 退出Diskshadow工具：
  DISKSHADOW> exit

 在创建备份期间，您将在命令提示符下看到与以下消息类似的消息，这意味着备份过程中已包含特定组件 并将对其进行验证：
  * Writer "System Writer" 包含在:
  + Component is included: \System Files

 如果其中一个 Writer 失败，则您可能会看到类似于以下内容的错误消息
  
 ERROR: The selected writer "SqlServerWriter" is in a faulty state.
 \- Status: 8 (VSS_WS_FAILED_AT_PREPARE_SNAPSHOT)
 \- Writer Failure code: 0x (VSS_E_WRITERERROR_NONRETRYABLE)  
 \- Writer ID: {a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}
 \- Instance ID: {8c57ad9a-8055-49e0-96ec-d8b41ea327eb}

 Error on recent operation.
 \- HRESULT (returned): 80042301
 \- Error text: VSS_E_BAD_STATE

 如果成功创建了快照，您将看到一条消息，列出了卷影副本数：1（或更多，取决于您选择的卷数）。请参见下面的屏幕截图中的示例：
 ![image-20200416092050922.png](/open.file/download?fileNo=246)
 如果没有这样的行，则不应将Diskshadow备份视为成功。

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