One of my customers has a Dynamic partition that was running out of disk space. Doing a DOS or Windows Explorer Search only found about 240GB of data files though out of a 1TB partition.
I moved these files to another partition temporarily, and when removed from the original partition no files could be found by DOS dir or Windows Explorer *.*.
I granted myself permission to look inside the System Volume Information folders, and found about 64 files that consumed about 726GB of space. About 42 have GUIDs as file names (no extensions) and are of type "System file". They range in size from about 17GB to 31GB. They were all created one day apart around 3AM (in the middle of the WSB backup), one per day for the past 40 days or so (April 08 to May 16), with a last written time almost exactly 24 hours later.
I can't find anything on the 'net about these. I tried scanning them with Symantec but Symantec just skips over them. Does anyone know anything about these - what they are, where they come from, etc.? Why are they there? How common is this? What is a "System file".
I'll wipe the partition in a few days, but until then, I keep it available in case anyone can get back to me and has questions.
Configuration:
Windows Server 2008-R2, Hyper-V, DPM 2010
This partition was used for daily WSB backups of the C: drive plus a couple of other backups. It has been in used since 2011.
Thanks,
Bob.