The time for which a frozen VFile is retained by the
agent. When a VFile is frozen, a timer (one per frozen VFile)
is started to keep track of the retention period for the
VFile. Once this timer expires, the VFile is deleted.
Till the expiry of the retention period, information
about frozen VFiles is maintained in
cdcVFileMgmtTable.
This object's value may be modified at any time, however
the new value will take effect only for new frozen VFiles.