Installing Cloud Sync

IMPORTANT: Please read the following before installing this beta software.

  1. For evaluation only - This beta software is for evaluation purposes only and should not be installed on critical equipment or in production environments. We strongly recommend reading the Release notes section before installing it. Synology cannot be held responsible for any damages, such as accidental data loss, caused by this beta software.

  2. Not downgradable - After installation of this beta application, you will not be able to downgrade to a previous official version of this software.

To install the beta software on your Synology NAS
  1. Log in to DSM using an account belonging to the administrators group.
  2. Open Package Center.
  3. Now you should be able to find and install packages that currently have a beta version available and compatible with your Synology NAS for public testing.
  4. Remember to click from Installed > Feedback to help us out and report any issues or suggestions.
Report Bugs


Applied Models
  • 20-series: FS6400, FS3400, RS820RP+, RS820+, DS620slim, DS420j, DS220j, DS120j, SA3600, SA3400, SA3200D
  • 19-series: RS1619xs+, RS1219+, RS819, DS2419+, DS1819+, DS1019+, DS419slim, DS119j, DVA3219
  • 18-series: FS1018, RS3618xs, RS2818RP+, RS2418RP+, RS2418+, RS818RP+, RS818+, DS3018xs, DS1618+, DS918+, DS718+, DS418, DS418play, DS418j, DS218+, DS218, DS218play, DS218j, DS118
  • 17-series: FS3017, FS2017, RS18017xs+, RS4017xs+, RS3617xs+, RS3617RPxs, RS3617xs, RS217, DS3617xs, DS1817+, DS1817, DS1517+, DS1517
  • 16-series: RS18016xs+, RS2416RP+, RS2416+, RS816, DS916+, DS716+, DS716+II, DS416, DS416play, DS416slim, DS416j, DS216+, DS216, DS216play, DS216j, DS216se, DS216+II, DS116
  • 15-series: RS815RP+, RS815+, RS815, RC18015xs+, DS3615xs, DS2415+, DS2015xs, DS1815+, DS1515+, DS1515, DS715, DS415+, DS415play, DS215+, DS215j, DS115, DS115j
  • 14-series: RS3614xs+, RS3614RPxs, RS3614xs, RS2414RP+, RS2414+, RS814RP+, RS814+, RS814, RS214, DS414, DS414slim, DS414j, DS214+, DS214, DS214play, DS214se, DS114, EDS14
  • 13-series: RS10613xs+, RS3413xs+, DS2413+, DS1813+, DS1513+, DS713+, DS413, DS413j, DS213+, DS213, DS213j, DS213air
  • 12-series: RS3412RPxs, RS3412xs, RS2212RP+, RS2212+, RS812RP+, RS812+, RS812, RS212, DS3612xs, DS1812+, DS1512+, DS712+, DS412+, DS212+, DS212, DS212j, DS112+, DS112, DS112j
  • 11-series: RS3411RPxs, RS3411xs, RS2211RP+, RS2211+, RS411, DS3611xs, DS2411+, DS1511+, DS411+, DS411, DS411slim, DS411j, DS411+II, DS211+, DS211, DS211j, DS111
  • 10-series: RS810RP+, RS810+, DS1010+, DS710+, DS410, DS410j, DS210+, DS210j, DS110+, DS110j

Release notes

Important Note

  1. DSM 6.1-15047 or above is required for Cloud Sync 2.4.0.

  2. Starting April 30, 2020, HiDrive no longer offers a free account. If you wish to continue using HiDrive, please upgrade your HiDrive plan.

What's New

  1. Supports Google shared drives (formerly named Team Drives).
  2. Supports Document Library in Microsoft SharePoint.
  3. Supports backing up application configurations in Cloud Sync with Hyper Backup.
  4. Users can now find a list of files that failed to be synced and the causes in the History tab.
  5. Supports chunked uploads for Box.
  6. Supports syncing the last modified time of the files to Box.
  7. Users can now upload files up to 99 GB in size to OneDrive.
  8. Reduced memory usage when syncing a large number of files.
  9. Updated Dropbox API.
  10. Updated Google Drive API.

Fixed Issues (General Issues)

  1. Fixed the issue where duplicate files might be wrongly deleted after renamed.
  2. Fixed the issue where a scheduled task might fail to resume syncing.

Fixed Issues (Baidu Related)

  1. Updated the upload and OAuth API of Baidu.
  2. Fixed the issue where syncing files with unknown formats to Baidu might lead to an unexpected application crash.

Fixed Issues (Dropbox/Box Related)

  1. Fixed the issue where a loop might occur when files uploaded to Dropbox are larger than 350 GB.
  2. Fixed the issue where a loop might occur when Dropbox Team Folder is deleted on Synology NAS.
  3. Fixed the issue where synchronization might fail when it takes more than an hour to upload files to Box.
  4. Fixed the issue where files with file names containing non-ASCII characters might become garbled when uploaded to Dropbox.
  5. Fixed the issue where a loop might occur when syncing a shortcut file or a Dropbox Paper file to Dropbox.

Fixed Issues (B2 Related)

  1. Fixed the issue where the connection with Backblaze B2 might need to be re-authenticated because of an authorization error.
  2. Supports switching the Backblaze B2 application keys when re-authentication is required.
  3. Fixed the issue where a loop might occur when uploading files with file names containing invalid characters to Backblaze B2.

Fixed Issues (OneDrive Related)

  1. Fixed the issue where a loop might occur during synchronization because of the wrong file size or hash value reported by OneDrive.