Improved system responsiveness by reducing the latency of the Btrfs file system in certain scenarios. Users can now create a Btrfs volume of up to 1 PB on specific Synology NAS models. This update automatically converts existing volumes that use the Btrfs (Peta Volume) file system to Btrfs. However, to create a volume larger than 200 TB, a RAID 6 storage pool and at least 64 GB of system memory are still required. Learn more Added support for client users to monitor the changes of subdirectories under shared folders via SMB protocol. This version of DSM is compatible with the models below. DSM 7.0 for FS, SA, XS/XS+, and DVA series is currently under development and will be available in the next quarter. Synology Storage Replication Adapter can only be used with DSM 7.0.1 or earlier versions. If you are using or plan to use Synology Storage Replication Adapter, please continue to use the current DSM version.

Supports customizing the low capacity notification for individual volumes when their available space drops below the specified value. Fixed an issue where the display in Volume Settings in Storage Manager was incorrect once users pinned the desktop widgets. Fixed an issue where users given the "Local user and management" privilege couldn't perform the assigned actions. To avoid possible compatibility issues, users who installed Active Insight, Synology Photos, and Secure SignIn mobile applications during DSM 7.0 Preview/Beta programs should update the applications to the latest version after the DSM update. Fixed an issue where Finder might stop responding when users search for content within mounted folders on macOS Big Sur 11.1 and 11.2.Added the ability to automatically replace “Critical” or “Failing” drives in protected storage pools with Hot Spare. SSD Cache Groups can be allocated to multiple volumes, allowing for more flexible management of SSD cache capacity.

USB devices (Wi-Fi dongle, Bluetooth dongle, 3G/4G dongle, USB DAC/speaker, and DTV dongle) are no longer supported. If your Synology NAS is currently connected via a wireless dongle, it will be disconnected after the update.Fixed an issue where initiators couldn't connect to the iSCSI target after ethernet interfaces reconnect in a high-availability cluster. Added support for memory cache mirroring across controllers for better data consistency on SA3200D.

Added the ability to mount storage pools from drives that are inserted after the device has been powered on without interrupting system services. DDSM is incompatible with DSM 7.0. To continue using DDSM, you should retain the current DSM version. To update to DSM 7.0, please delete DDSM first. The following drives will be updated automatically to the latest firmware version to fix an unexpected issue that may occur during repair or other read/write operations: HAT5300-4T (firmware version 1401 and 1402), HAT5300-16T (firmware version 1401), HAT5310-8T (firmware version 1401), and HAS5300-16T (firmware version 1401).Based on internal processor benchmarks between DS923+ and the prior-gen DS920+. Actual performance may vary depending on hardware and software configuration, workload, and testing environment. Fixed the issue where a DS920+ or DS720+ might not enter hibernation when its connected expansion unit has entered deep sleep. Surveillance Station includes 2 free licenses. Connecting more cameras and devices requires additional licenses. Fixed an issue where users couldn't expand a RAID 1 storage pool on the active server in a Synology High Availability cluster when the active server's RAID 1 storage pool is smaller than the one on the passive server.

Series: RS2416RP+, RS2416+, RS816, DS916+, DS716+II, DS716+, DS416, DS416play, DS416slim, DS416j, DS216+II, DS216+, DS216, DS216play, DS216j, DS216se, DS116, RS18016xs+ Performance figures are obtained through internal testing by Synology. Actual performance may vary depending on the testing environment, usage, and configuration. See performance charts for more information. Fixed an issue where deleted files from the home folder couldn't be found in the recycle bin if deleted via SMB.Fixed an issue where incorrect drive compatibility information was displayed after drive migration. Fixed an issue where after users updated to DSM 6.2.4, iSCSI targets mapped with LUNs created on DSM 6.0 and before became offline and couldn't be enabled. Fixed the issue where drive status LED indicators on a connected expansion unit might not work properly when the expansion unit wakes up from deep sleep. Fixed an issue where, if Web Station was installed on an encrypted volume, resetting the system would cause the volume to crash. series: RS2818RP+, RS2418RP+, RS2418+, RS818RP+, RS818+, DS1618+, DS918+, DS718+, DS418, DS418play, DS418j, DS218+, DS218, DS218play, DS218j, DS118