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Any additional feedback? Based upon what I've been able to find it looks more like an issue centered around UAC. Would it gum-up the works if your domain admin user took ownership of the parent folder that contains the 's of folders?
It might. We've done that in the past and had some issues with permissions pop up later, but that was mostly due to permissions propagating to subfolders. Plus this is a DFS replicated set of folders migrating from to r2. My concern is that making a massive scale change like that would cause problems with DFSR. For now I'm just checking the sizes using the admin share of the drive.
Its working fine until we can turn off replication when the migration is complete. I'll try resetting all the ownership then. Now the issue really becomes is it worth the security hit to disable UAC on the file servers. I'll have to mull this one over, but I'm guessing I'll just live with it and check folders remotely until I can fiddle with the permissions on the directories themselves. I'll look into the GPO option. Nobody aside from me and another admin will be logging into the boxes themselves so no issues there, although sometimes UAC is nice just for the reminder to stop and think "are you sure you want to be doing this" This seems to be a feature that users want but it has never been fully implemented by Microsoft.
The most likely reason it does not display folder sizes is that it would slow down browsing of the file system significantly. To show the size of a folder, Windows Explorer would have to read ever file within every sub-folder before it could return a result. Unfortunately, this takes time and uses up a lot of the systems processing power.
Regardless, it seems odd that they didn't provide it as an option in Explorer's settings. The column for size is already there for files so it would just be a matter of writing the code to calculate the folder size when the option is enabled. Nevertheless, Explorer does provide some features to help users calculate folder sizes.
The easiest and most well known method is to use the context menu and check the properties of the folder. If you right click a folder and select properties Explorer will recursively scan every file and display the total size as it progresses in the properties window you can see in the screenshot on the right. This works well though sometimes it's hard to know when the process has finished as it can pause for a time before continuing on.
It would be nice to see something that tell you it's completed at the end. The main problem with this method though is that you have to right click every folder to get its size.
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