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Click Set Time Grid under the Space Reclamation Schedule section. It is asking me to do a data scrub, I have a couple concerns / questions: 1> Does the data scrub have a significant performance impact? 2. 3. Cookie Notice Small steps to big protection for your storage. If any data inconsistent with the checksum is detected, the system will try to use a backup to repair the data . It can repair any detected data inconsistencies. General: The information on this blog has been self-taught through years of technical tinkering. So far it's 25% complete after about 4 hours. Help me estimate data scrubbing time? : r/synology - Reddit This panel has an option to set a schedule for data scrubbing, which I have set. Amnios5 3 yr. ago. See further information and configure your preferences, The unofficial Synology forum for NAS owners and enthusiasts. I'm running the main unit with two expansion units. When AI meets IP: Can artists sue AI imitators? How can I see how much space file versioning used? Suppose the drive containing A2 breaks, then we can perform the following XOR calculation to reconstruct it: The recovered contents are what we call a redundant copy. JavaScript is disabled. So when the delivery was still a couple hours away I read on the Synology website that I should do a Data Scrubbing run before hot swapping a drive just to be sure. I run my Data scrubbing every 6 months. First of all you can see how much space uses CloudStation for file versioning in this way: In my case it was 2.5TB out of 3.5TB (!!!). If it affects performance, but doesnt take too long, schedule it when the server is less used. Go to Storage > Global Settings. RAID scrubbing can ensure data consistency but it cannot tell which data block is incorrect but Btrfs data scrubbing does exactly that. The more frequent it is run the higher the . The Parity Consistency Check at least for SHR volumes is the exact output of the recovery from mdstat when rebuilding with the spare drive. We also design and thoroughly test our DiskStation Manager (DSM) operating system and software ecosystem on our devices to ensure they work well together. The file system can automatically detect corrupted data (i.e., silent data corruption) and rely on its self-healing technology to recover corrupted data. Both tests will do the exact same self health checks beforehand. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Note the following: The system will shut down and try to repair the affected volume. During this time, DSM and all other services will be unavailable. What exactly is Parity Consistency Check that Synology NAS runs when a new disk is added and why does it normally take a long time to complete? Guessing if you configure SMB connections using the local static IP, users should drop to bond 1st if As time goes on I learn more and more.