Windows Server 2012 R2 VM备份失败,可用存储空间不足,无法创建

Backup failed to complete. There is not enough disk space to create
the volume shadow copy on the storage location. make sure that,for
all volumes to be backup up,the minimum required disk space for
shadow copy creation is available. This applies to both the backup
storage destination and volumes included in the backup. Minimum
requirements: For Volume less than 500 megabytes,the minimum is 50
megabytes of free space. For volumes more than 500 megabytes,the
minimum is 320 megabytes of free space. Recommended: At least 1
gigabyte of free disk space for each volume if the volume size is more
than 1 gigabyte. Detailed Error: Insufficient storage available to
create either the shadow copy storage file or other shadow copy data.

在事件查看器中,我看到此错误

EventID: 521 The backup operation that started at ‘?TIME’ has failed
because the Volume Shadow Copy Service operation to create a shadow
copy of the volumes being backed up failed with following error code
‘0x80780119’. Please review the event details for a solution,and then
rerun the backup operation once the issue is resolved.

在使用我们的服务器批量许可证副本进行生产之前,使用Server 2012 R2 MSDN副本在我们的测试设置中没有发生此问题.因此,作为测试,我在运行HyperV的主机(MSDN)服务器上安装了两个虚拟机,一个使用我们的MSDN副本,一个使用我们的服务器批量许可证副本,安装非常简单,安装Windows备份,将VHDx文件附加为E：潜水和尝试裸机备份. MSDN副本能够执行裸机备份.批量许可证副本因上述错误而失败.

有没有其他人遇到这个问题？或者任何关于在哪里查看阻止备份完成的两个VM之间差异的想法？

编辑：

我已经在两个不同的服务器上验证了这一点,安装了服务器2012 R2的MSDN副本的VM用于裸机备份,安装了购买的服务器2012 R2的批量许可证副本的虚拟机不能用于裸机备份,另外一些信息在服务器无法执行裸机备份,它能够备份C：驱动器,但直到我打开裸机备份它才会失败.

我发现这篇文章与我的问题类似,但是当我尝试修复它并试图恢复虚拟机时,Windows PE系统映像恢复表示无法找到要恢复的映像.
https://superuser.com/questions/663782/windows-8-1-insufficient-storage-available-to-create-shadow-copy