Synology DSM 5.2-5565 (beta) has been released

By | May 12, 2015
Synology DSM XPEnology community


New features in DSM 5.2 include:


Streamlined application deployment and higher productivity:


The integration of Docker allows developers to ship, and users to run, a vast number of applications on Synology NAS with minimal time and resources needed. SSO Server lets users gain access to all services in the same domain with only one single log-in. File Station now can be connected with public clouds so you can browse and manage files in them without taking up bandwidth. Learn more 

Backup & Replication

File-based backup restoration and smart version control:

The new file browsing feature allows you restore a single file, instead of an entire shared folder, from past backups. You can also automatically rotate old backup data or iSCSI LUN snapshots when designated quota is reached or even benefit from the Smart Recycle policy. The latter helps you minimize storage consumption while still maintaining enough flexibility for point-in-time recovery.  Learn more 

Note Station

The new Synology Web Clipper captures any web page directly in a Chrome window, allowing you to quickly create a new note and save it for future reference. If actions are required, you can create independent to-do items or attach them to different notes, set priorities, and get reminders. Learn more 


Portable task manager and refined multimedia experience:

With the all-new Synology Web Clipper and the to-do-list-turned-task-manager, Note Station and DS note lets you capture the best of the web into your pocket notebook, and then organize action points according to your schedule. Download Station’s new “preview” feature gives you a sneak peek of what’s being downloaded, saving you time and bandwidth from misleading torrents. Cue file support in Audio Station means you can switch between high-quality CD tracks at will. Want to display photos on big-screen TV? Now besides Apple TV, the support of Chromecast and DLNA TVs in DS photo also makes this possible.

Cloud Station & Cloud Sync

Cloud Station now delivers smoother performance with smart polling and customizable file versioning for each shared folder. Also, Cloud Sync now offers one-way sync options, making things easier when backing up data to a public cloud or vice versa, while data encryption guarantees files sent to the public cloud remain for your eyes only. Learn more

Faster, more customizable cloud syncing with encryption:

The smart polling technology dramatically increases Cloud Station’s performance while at the same time reducing network traffic and server overhead. The number of file versions is also customizable for each shared folder. When syncing with public clouds, besides compatible with more Amazon S3 and WebDAV storage, you can now set up one-way sync – and even encrypt the data before uploading it to public clouds – immediately turning them to offsite backup destinations without sacrificing data privacy.

Improved SSD cache

Smaller memory footprint

SSD caching is a very powerful technology developed by Synology to give a dramatic performance boost without crippling an IT budget. DSM 5.2 brings a lot of under the hood changes, reducing the RAM consumption of SSD caching by up to 90%, allowing more users to enable it. Learn more

New modes for Link Aggregation

Optimized bandwidth and safety without advanced switch


Link Aggregation is an essential network feature, allowing you to tailor the behavior of your network ports according to your needs and find a balance between reliability and performance. DSM is now compatible with the following-modes: Active-standby, 802.3ad dynamic, Balanced XOR, and Adaptive Load Balancing, allowing you to benefit from link aggregation without server-class switch. Learn more

New security features


AppArmor and SMB 3 encryption to strengthen security further:

AppArmor extends its reach to profiles for packages to effectively restrict malicious software from accessing unauthorized system resources. The support of SMB 3 encryption enables Synology NAS to secure file transfers to Windows 8 and Windows Server 2012, reducing the possibility of tampering and eavesdropping when data moves across a company’s network.


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