These events might appear in the Windows Event Viewer after taking a Snapshot with NetVault or Rapid Recovery.
Doing a Snapshot with VMware's Snapshot Manager produces the same error messages.
Event ID: 50 NTFS Warning
[delayed write failed] Windows was unable to save all the data for the file. The data has been lost. This error may be caused by a failure of your computer hardware or network connection. Please try to save this file elsewhere"
Event ID: 137 NTFS Error
The default transaction resource manager on volume \\?\Volume{8062123e8-7567-91b1-a168-008556ae003d} encountered a non-retryable error and could not start. The data contains the error code.
Event ID: 140 NTFS Warning
The system failed to flush data to the transaction log. Corruption may occur in VolumeId:<> DeviceName: \Device\HarddiskVolume<>.(A device which does not exist was specified.).
Event ID: 157 Disk Warning
Disk xx has been surprise removed.
Event ID: 12289 VSS Error
Volume Shadow Copy Service error: Unexpected error DeviceIoControl(\\?\fdc#generic_floppy_drive#6&2bc13940&0&0#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b} - 00000000000004A0,0x00560000,0000000000000000,0,0000000000353B50,4096,[0]). hr = 0x80070001, Incorrect function[]
This issue has been addressed by VMware and further information can be found here:
Creating a quiesced snapshot of a Windows virtual machine generates Event IDs 50, 57, 137, 140, 157, or 12289 (2006849)
Correlating VMware products build numbers to update levels (1014508)
For Rapid Recovery, the quiesced snapshot setting can be either disable or enable:
How to enable/disable quiesce snapshot for Rapid Recovery