As it is, I have no idea what the
Maximum size of chest should be set to. I don't even know where to look for this--in fact, I don't even know, for sure, if this is a
file, or what! So, if you indicated the current size of the "chest" [or
expected size, or
average size, whatever would be
meaningful, here], that would, at least, provide some sort of reference.
And consider doing this for other instances, such as
Maximum size of each log file, and
Delete scan logs older than [e.g. show statistics that would make it easier to judge how many days to set that to--such as
average growth of scan log/day], ya know, stuff like that