Download Firmware Synology Disk Station Manager 5.1 Build 4977 Beta

Synology has released a beta release of version 5.1 of Disk Station Manager. Synology DSM is the management software that runs on several of the company’s NAS products. The Disk, Cube and Rack Stations offer more than just extra storage space. For example, backups of all clients on the network can be made and files can be downloaded via http, ftp, bittorrent, usenet and emule, so that, for example, energy-hungry PCs can switch off at night while the download just comes in. In addition, audio and video files can be streamed over the network via the built-in iTunes server, a dynamic website can be hosted using PHP and MySQL and the device can act as a print server.

To be able to install version 5.1, at least version 5.0 must be present. Furthermore, it is only suitable for the nas models ending in 11 or higher. For the other conditions and the different downloads, look at this page. Version 5.1 includes several security improvements. For example, there is a security advisor that warns you about unsafe settings and the Application Armor kernel security module is now enabled by default. The complete release notes for this release can be found below:

Security Advisor

• Security Advisor is a DSM security application that scans your DSM settings and Synology NAS and recommends changes that help keep your Synology NAS safe.

AppArmor

• Application Armor (AppArmor) kernel security module is now enabled in DSM. Each system program is associated with a security profile that restricts the capabilities, protecting against unknown threats from malicious software.

Service by Interface

• You can set the network interface that each service will use.

App Privileges

• You can assign application privileges for local and domain groups.
• IP-based access rules allow you to define application privileges for different locations.

Package Center

• Trust level protects you from installing altered packages or packages from unknown sources on your Synology NAS.

2-step verification enforcement

• 2-step verification can be enforced on admin groups or all users.

Backup and Replication

• You can now back up data from any Synology NAS (A) to a volume on another Synology NAS (B) using its non-admin account (on B) with network backup destination privileges.
• New backup destination support for Azure, SFR S3, and hicloud S3.
• The following packages can now be backed up via the built-in Backup & Replication feature: VPN Server, DNS Server, Mail Server, Proxy Server, RADIUS Server, Directory Server, and Asterisk.

LUN Backup

• iSCSI LUN backup performance has been enhanced by 169%, as illustrated in the below comparison:
  LUN BackupDSM 5.0DSM 5.1Improvement

  Local Backup	445MB/s	863MB/s	94%
  Network Backup	129MB/s	348MB/s	169%

iSCSI LUN Snapshots

• You can set a schedule for iSCSI LUN application-consistent snapshot to continuously protect your LUN.
• You can lock a specific snapshot to prevent it from being removed by retention policy.

VMware VAAI NAS

• Two primitives are supported for NFS protocol: Full File Clone and Reserve Space.
• Please install the Synology NFS Plug-in for VMware VAAI and read the instructions in README.txt to make sure the installation is successful.

UNMAP Support for Windows Server 2012

• Supports UNMAP command to support Storage Space Reclamation which can be triggered by file deletion or a file system level trim.

SSD Cache

• You can now create a read-only cache with one SSD.
• SSD read hit rate is displayed in real-time as well as daily, weekly, and monthly intervals.
• SSD cache advisor helps you to determine the required SSD cache size.

High Availability

• Read/Write SSD Cache is now supported for HA cluster.

File Station

• You can manage and transfer files to another WebDAV/FTP server. FTP, SFTP, WebDAV, and WebDAV over HTTPS are supported.
• A simple email client allows you to share files as attachments.
• You can share files to DSM users and they will receive notifications.
• You can now play music using the built-in audio player.

IPv6

• VPN client, Log Center, QuickConnect and DDNS now support IPv6.

Static Route and Multiple Gateways

• You can set the default gateway on each network interface.
• You can define the static route based on your network environment.
• IP Routing Table lets you view how network packets will be routed.

Storage Analyzer

• Storage Analyzer allows you to quickly view overall usage trends of your Synology NAS, create and manage tasks to analyze storage spaces, and generate detailed reports on volume usage.
• You can select report types, set a schedule to generate periodic storage reports, and easily view previous reports that match the specified time or criteria.

Storage Manager (for RS10613xs+, RS3413xs+, RS3614xs, RS3614RPxs, RS3614xs+ only)

• You can now create volumes up to 200 TB large.
• You can create RAID groups and RAID arrays. A RAID Group for Multiple Volumes or iSCSI LUNs (Block-Level) that use RAID 5 or RAID 6 may contain multiple RAID Arrays.
• Synology Hybrid RAID is no longer supported.

Log Center

• Supports IPv6 for log sending and receiving.
• Supports customized log formats.

Text Editor

• You can now use hotkeys to quickly perform common actions.
• You can convert between Traditional and Simplified Chinese text.

DSM Desktop

• Push notifications can now be sent via Chrome and Safari.
• You can change the main menu style to drop down.
• You can change the size of Desktop icons to be smaller.

misc

• You can set global rules for all interfaces in Firewall.
• You can set default permissions for external drives.
• You can define each FTP user’s root folder to be a folder other than their home folder.
• You can choose to filter Domain Users and Groups by Organizational Unit.
• A command line based FTP client is built-in for automated tasks.
• SSH port can now be customized.
• Python core is now built-in.