StableBit DrivePool Per-Folder Duplication in Nuts & Bolts Posted June 2, 2013 There is one other thing I would really like to see added to DP, as you talk about folders tagging Alex. This is folder based balancing. For now you balance on a per file basis, distributing them across the HDDs. You already have a plugin to group files depending on the moment they are created. What would be really great is to tag a folder so that its entire content is always kept on one HDD (no matter which one); when rebalancing the entire folder is considered as one unit to balance; when new files are created on that folder, they are created on that HDD. This is a pretty interesting feature request. I've considered this, and actually it would be super simple to implement a per-folder name placement limit in the kernel. We can control file placement by file name (including wildcard patterns) or file size. For example, you might be able to say something like: I want all files that match this pattern \ServerFolders\ImportantDocuments\* to be placed on Drives 1, 3 and 4 only. This is all very easy to do, given our existing infrastructure. The problem with implementing something like this is that the non-real time balancer is not designed to deal with this. In other words, the module that reshuffled your existing files into their designated locations, doesn't understand folder names, and it would be non-trivial to implement this (because of performance considerations). If we were only interested in controlling new file placement, we could have this feature next week. But this is really something that I would like to do eventually.