Ridiculous questions on CloudDrive in Nuts & Bolts Posted June 22, 2018 12 hours ago, Alex said: 1. By default, no. But you can easily enable checksumming by checking Verify chunk integrity in the Create a New Cloud Drive window (under Advanced Settings). 1a. For unencrypted drives, chunk verification works by applying a checksum at the end of every 1 MB block of data inside every chunk. When that data is downloaded, the checksum is verified to make sure that the data was not corrupted. If the drive is encrypted, an HMAC is used in order to ensure that the data has not been modified maliciously (the exact algorithm is described in the manual here https://stablebit.com/Support/CloudDrive/Manual?Section=Encryption#Chunk Integrity Verification). 1b. No, ECC correction is not supported / applied by StableBit CloudDrive. 2. It's perfectly fine. The chunk data can be safely stored on a StableBit DrivePool pool. 3. Yep, you should absolutely be able to do that, however, it looks like you've found a bug here with your particular setup. But no worries, I'm already working on a fix. One issue has to do with how cloud drives are unmounted when you reboot or shutdown your computer. Right now, there is no notion of drive unmount priority. But because of the way you set up your cloud drives (cloud drive -> pool -> cloud drive), we need to make sure that the root cloud drive gets unmounted first before unmounting the cloud drive that is part of the pool. So essentially, each cloud drive needs to have an unmount priority, and that priority needs to be based on how those drives are organized in the overall storage hierarchy. Like I said, I'm already working on a fix and that should be ready within a day or so. It'll take a few days after that to run the driver through the Microsoft approval process. A fix should be ready sometime next week. Bug report: https://stablebit.com/Admin/IssueAnalysis/27859 Watch the bug report for progress updates and you can always download the latest development builds here: http://wiki.covecube.com/Downloads http://dl.covecube.com/CloudDriveWindows/beta/download/ As far as being ridiculous, I don't think so I think what you want to do should be possible. In one setup, I use a cloud drive to power a Hyper-V VM server, storing the cache on a 500GB SSD and backing that with a 30+ TB hybrid (cloud / local) pool of spinning drives using the Local Disk provider. Thanks for the answers and support, Alex. I understand now that the integrity verification is for revealing corruption/tampering at the source but correction is a non-goal. One more for you then: 1c. If a CloudDrive fails verification in a DrivePool, does DrivePool treat the drive as corrupted and pull data from an available duplicated source? Your explanation makes sense. I was wondering how nested dependencies were supposed to work during loading. I also saw the unmounting service and I think you answered why it exists. I have another 3 weeks left in my CloudDrive trial, so hopefully I can try the fix out. My college recently gave all alumni "unlimited" GDrive space and I'd like to use whatever my network can muster. Unfortunately during the whole CloudDrive on DrivePool fiasco I lost a drive to the frequent power cycling and hard shutdowns. It now only initializes properly at an angle (???). That Hyper-V setup sounds just as ridiculous--it's assuring to know I'm in good company. Thanks again for all your (and Chris's) hard work! DrivePool and Scanner have been great to me over the years.