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Synology DSM 7.0 RC (Release Candidate) Now Available

Here’s some good news for fans of Synology NAS servers. The NAS vendor just made available the release candidate version of its long-anticipated DiskStation Manager (DSM) 7.0.

Synology DSM 7.0 Release Candidate Update Interface
Synology DSM 7.0 RC now includes the final version of its supported apps.

Synology DSM 7.0 RC: Apps are now of the final versions

The release candidate (or RC) is generally known as the last pre-release version of a software product. It’s slated to be stable enough to be ready for the final release unless significant bugs are found.

This is a major step since Synology announced the open beta of DSM 7.0 more than six months ago. DSM 7.0 is the first significant upgrade of the NAS OS in some five years.

This new version comes with a long list of improvements, including a better-looking and much faster user interface. Underneath that, you’ll also find better storage management and more tools for both home and business users.

In return, it also sheds support for a long list of legacy devices and services. For example, DSM 7.0 no longer supports ext3 volumes or USB dongles (for Wi-Fi , Bluetooth, cellular, speaker, and DTV) are no longer supported. Some popular apps are also no longer (fully) supported, either.

The most noteworthy about the DSM 7.0 RC is that, unlike DSM 7.0 beta, you can now use the final versions of all supported apps instead of their beta versions. In other words, while the OS itself might be pre-release, the packages within it are those of the release versions.

DS620slilm Front
The DS620slim is one of many Synology servers that will run DSM 7.0 well.

Supported servers and apps

DSM 7.0 supports servers as old as those released back in 2013, and it’s a free upgrade — similar to Windows 10. Below is the full list of existing servers on which you can install DSM 7.0.

(Per Synology’s naming convention, the digits at the end of the model signify the release year.)

  • 21-series: RS2821RP+, RS2421RP+, RS2421+, RS1221RP+, RS1221+, DS1821+, and DS1621+.
  • 20-series: RS820RP+, RS820+, DS1520+, DS920+, DS720+, DS620slim, DS420+, DS420j, DS220+, DS220j, and DS120j.
  • 19-series: RS1219+, RS819, DS2419+II, DS2419+, DS1819+, DS1019+, DS419slim, and DS119j.
  • 18-series: RS2818RP+, RS2418RP+, RS2418+, RS818RP+, RS818+, DS1618+, DS918+, DS718+, DS418, DS418play, DS418j, DS218+, DS218, DS218play, DS218j, and DS118.
  • 17-series: RS217, DS1817+, DS1817, DS1517+, and DS1517.
  • 16-series: RS2416RP+, RS2416+, RS816, DS916+, DS716+II, DS716+, DS416, DS416play, DS416slim, DS416j, DS216+II, DS216+, DS216, DS216play, DS216j, DS216se, and DS116.
  • 15-series: RS815RP+, RS815+, RS815, DS2415+, DS1815+, DS1515+, DS1515, DS715, DS415+, DS415play, DS215+, DS215j, DS115, and DS115j.
  • 14-series: RS2414RP+, RS2414+, RS814RP+, RS814+, RS814, RS214, DS414, DS414slim, DS414j, DS214+, DS214, DS214play, DS214se, and DS114.
  • 13-series: DS2413+, DS1813+, DS1513+, DS713+, and DS213j.

Note that just because a server is on the support list doesn’t mean all its features are available. For example, video conversion to FLV and MPEG-4 Part 2 formats is no longer available in many models after upgrading to DSM 7.0.

On of that, according to Synology, here’s the list of apps (packages) that won’t work with DSM 7.0:

  • Synology apps: Cloud Station Server (replaced by Synology Drive Server), Cloud Station ShareSync (replaced by Synology Drive Server), Photo Station (replaced by Synology Photos), Moments (replaced by Synology Photos)
  • Third-party packages: Discourse, DokuWiki, Drupal, Drupal8, DVBLink, GitLab, GLPI, Hasplm, Java7, Java8, LimeSurvey, Logitech Media Server, LXQt, Magento, Magento2, MantisBT, Mono, Moodle, Node.js 0.10, Node.js 0.12, Node.js v4, Node.js v6, Node.js v8, Odoo 8, OpenERP 6.1, OpenERP 7.0, OrangeHRM, Orthanc, osCommerce, osTicket, PHP PEAR, phpBB, Piwik, Podcast Generator, PrestaShop, PrestaShop1.7, PythonModule, Redmine, Ruby, Spree, SugarCRM, SVN, Synology File Manager, Tomcat6, Tomcat7, TVMosaic, and Webalizer.
DSM 7 0 Release Candidate Update process
The upgrade process of DSM 7.0 RC includes upgrading existing apps into their final versions.

Should I upgrade now?

I upgraded to this latest version (7.0-41882) on a DS1618+ server, and the process took less than 20 minutes. During this time, I noted that the system also updated all existing apps to their final versions.

See also  Synology DS1621+ Review: 2021's Ultimate Home NAS Server, Delivered!

That said, if you’re running a beta version of DSM 7.0, you should definitely upgrade to this RC release. There’s no reason not to. You can do that via the update function within your server’s web interface or download the image and update manually.

However, if you’re still using DSM 6.2, it’s a good idea to keep waiting, even after the DSM 7.0 final version is out, to make sure your existing apps are fully compatible. And if they are not, you’ll need to find alternatives first.

(Generally, though, if you’re using popular apps, they are all going to be supported or replaced with a better alternative.)

Still, it’s important to note that once you’ve upgraded, it’s not possible to downgrade back to DSM 6.2. OK, it is possible, but very tough. I speak from experience.

7 thoughts on “Synology DSM 7.0 RC (Release Candidate) Now Available”

  1. The USB Dongle support also has me concerned. I currently use a QNAP QNA-UC5G1T on my 918+ via a custom driver created to support it (
    This has allowed me to have 5gbe on this NAS which otherwise wouldn’t support it. Given its a reasonably fast unit, especially with the m.2 cache drives, i’ve been able to get a big speed increase out of it.
    Would hate to lose this functionality with the update so will be paying close attention to ongoing support for this.

    • It’s unclear if USB Ethernet adapters are no longer supported, DK. But Wi-Fi dongles are not for sure. I think it’s better that you wait to make sure before upgrading.

  2. Dong, thanks for the heads-up on DSM v7.0. Can you be more specific about the “USB dongle” not being supported? I’ve been using a DS216+II for several years (happily, I might add) and I see it in the list of supported models. It does have a USB port which I use with the Hyper Backup app (not in the non-supported software list). Specifically, I do a daily one-off backup of my latest backup collection on the SAN to a stand-alone hard drive connected via the USB port. After the backup, the USB port is electronically disconnected from the SAN and thus the backup copy is isolated from my local network until I physically re-insert the USB cable before the next copy cycle. This is my virtual “off site” repository in case of a ransomware intrusion. Would this be considered a “USB dongle” that is no longer supported?

    • Sorry about the SAN references, it was a post-retirement conflation with years past experiences. Yes, it is indeed NAS we’re discussing here! Also believe I found some Synology info that says the USB connected storage access remains in v7.0, unless you say otherwise. Sorry for the concern.


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