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€ 1957,–
€ 1617,36 ex. 21% VAT

Synology RS2421+

in stock (8 units) | order today = shipped on Monday
  • RS2421+ is a powerful 2U RackStation with 12 slots
  • 4 GB DDR4 ECC UDIMM (expandable to 32 GB)
  • Expandable up to 24 bays with Synology RX1217 (RP)
  • AMD RyzenTM V1500B quad-core 2.2 GHz
When ordering NAS + HDD's you get free assembly!

Product Description RS2421+

We recommend that you only install drives that are in the compatibility list of your device. We,, cannot provide technical support for devices that use unsupported components.

Versatile and Reliable Storage Platform
RS2421+ units combine ample performance with versatile storage capabilities to deliver a cost-efficient data management solution. 

  • Up to 2,200/1,154 MB/s sequential read/write performance to support multi-user and demanding workloads 
  • 12 SATA HDD/SSD 2.5"/3.5" bays, expandable to 24 with a Synology RX1217(RP) expansion unit

Optimized for Data Protection and Integrity
Powered by Synology's DSM operating system, tailored for data management, and built upon the Btrfs file system, data stored on the RS2421+/RS2421RP+ are safely guarded by modern data protection technologies. 

  • Advanced snapshot technology provides schedulable and near-instantaneous data protection of shared folders and LUNs 
  • File and folder-level data restoration enables restoration of specific files or folders 
  • Flexible storage quota system helps admins manage available space by specifying storage limits for shared folders 
  • File self-healing detects and recovers corrupted files using mirrored metadata and RAID configurations 
  • Inline compression compresses data before they are written to the drive, reducing write commands and optimizing storage space

Data Backup Solutions for IT Infrastructure
Synology Active Backup Suite is a collection of license-free backup solutions built to protect Windows PCs and servers, VMs, other file servers, and SaaS applications: 

  • Active Backup for Business (ABB) consolidates backup tasks for physical and virtual environments with rapid restoration of files, entire physical machines, and VMs. 
  • Active Backup for Google Workspace allows users to back up Google Workspace data including from Gmail, Contacts, Calendar, and Drive. 
  • Active Backup for Microsoft 365 provides complete backup of Microsoft 365 data including from OneDrive for Business, SharePoint Online, emails, contacts, and calendar. 

Remote and On-Premises Collaboration
Synology's collaboration suite provides a private cloud solution for on premises and remote workers to concurrently edit documents, share files, manage emails, send instant messages, and more. By leveraging a private cloud infrastructure, businesses can ensure complete data ownership and multi-layered security. 

  • Synology Office includes Synology Documents, Spreadsheets, and Slides, which allow multiple users to edit, comment on, and share files together. 
  • Synology Drive allows data access, synchronization, on-demand file restoration, and backup. Synology Chat brings teams together with one-on-one chats, group chats, and encrypted private channels over multiple platforms. 
  • Synology MailPlus provides a secure, reliable, and private email server. 
  • Synology Calendar helps teams keep track of what is most important with convenient calendar sharing and scheduling.

Private Video Surveillance
With Synology Surveillance Station, the RS2421+/RS2421RP+ become powerful Network Video Recorder solutions with support for up to 40 IP cameras6. 

  • 7,600+ supported camera models 
  • ONVIF support to prevent vendor lock-in 
  • Private, subscription-free storage of recordings
  • Access through web browser, dedicated desktop clients, or mobile app 
  • Event-based rules to trigger specific actions 
  • Email, SMS, or push notification options 

Virtualization and Certified Storage
DSM streamlines provisioning for and management of virtual machines with full certification for VMware vSphere, Microsoft® Hyper-V, Citrix XenServer, and OpenStack virtualization environments. 

Synology Storage Console for VMware or Windows platforms lets you manage storage directly from your hypervisor. VMware VAAI integration and Windows ODX help offload storage operations and speed up data transfer. 

Synology Virtual Machine Manager (VMM) is a hosted hypervisor for virtual machines running Windows, Linux, or virtualized versions of DSM with recovery mechanisms that ensure data protection on each VM7.

For more information, please visit this products webpage.


  • Synology RS2421+ with 12 x 8TB Synology SATA HDD HAT5300-8TB
    not in stock | € 6013,00
    € 4969,42 ex. 21% VAT
  • Synology RS2421+ with 12 x 12TB Synology SATA HDD HAT5300-12TB
    not in stock | € 8197,00
    € 6774,38 ex. 21% VAT
  • Synology RS2421+ with 12 x 16TB Synology SATA HDD HAT5300-16TB
    not in stock | € 10225,00
    € 8450,41 ex. 21% VAT


Type 19" rack
CPU AMD RyzenTM V1500B quad-core 2.2 GHz
RAM 4 GB DDR4 ECC UDIMM (expandable up to 32 GB)
Nr. of HDD slots 12 slots
Harddisk interface 2,5'' SATA III, 3,5'' SATA III, M.2 SSD
RAID Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, Hybride RAID
External interface 2 x USB 3.2, 1 x PCIe, 1 x Expansion port
LAN 4 x 2.5GbE/1GbE port
Encryption Hardware based
Link aggregation No
Redundant power supply No
Wireless No
Warranty 3 year
EAN Code 4711174723782

Did you notice a wrong specification? Please let us know.

CPU AMD RyzenTM V1500B quad-core 2.2 GHz
Hardware encryption engine Yes (AES-NI)
Memory 4 GB DDR4 ECC UDIMM (expandable up to 32 GB)
Compatible drive types 12 x 3.5" or 2.5" SATA HDD/SSD (drives not included)
Only Synology SAT5200 2.5" or Synology SNV3400/3500 M.2 SSDs (sold reparately) can be used for SSD cache
Hot swappable drive Yes
External ports 2 x USB 3.2 Gen 1 ports
1 x Expansion port (Infiniband)
Form factor Rackmount 2U
Size (HxWxD) RS2421+: 88 x 482 x 552 mm (with server handles)
Weight RS2421+: 11.5 kg
Rack installation support 4-post 19" rack
LAN ports 4 x 1GbE RJ-45
Wake on LAN/WAN Yes
PCIe 3.0 slot 1 x 4-lane x8 slot
Supports network interface cards and M.2 NVMe SSD adapter cards for SSD cache
Scheduled power on/off Yes
System fans 3 x (60 x 60 x 38 mm)
AC input power voltage 100 V to 240 V AC
Power frequency 50/60 Hz, single phase
Operating temperature 0C to 35C
Storage temperature -20C to 60C
Relative humidity 5% to 95% RH
Maximum operating altitude 5,000 m (16,400 ft)
General DSM Specification
Networking protocols SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN™, L2TP)
File systems Internal: Btrfs, ext4
External: Btrfs, ext4, ext3, FAT32, NTFS, HFS+, exFAT10
Supported RAID types Synology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
Storage management Maximum single volume size: 108 TB
Maximum system snapshots: 65,53611
Maximum internal volumes: 64
SSD cache Read/write cache support
2.5" SATA SSD support
M.2 NVMe SSD support9
File sharing capabilities Maximum local user accounts: 2,048
Maximum local groups: 256
Maximum shared folders: 512
Maximum concurrent SMB/NFS/AFP/FTP connections: 1,00012
Privileges Windows Access Control List (ACL), application privileges
Directory services Connects with Windows AD/LDAP servers enabling domain users to login via SMB/NFS/AFP/FTP/File Station using their existing credentials
Virtualization VMware vSphere, Microsoft Hyper-V, Citrix, OpenStack
Security Firewall, shared folder encryption, SMB encryption, FTP over SSL/TLS, SFTP, rsync over SSH, login auto block, Let's Encrypt support, HTTPS (customizable cipher suite)
Supported clients Windows 7 onwards, macOS 10.12 onwards
Supported browsers Chrome, Firefox, Edge, Internet Explorer 10 onwards, Safari 10 onwards, Safari (iOS 10 onwards), Chrome (Android 6.0 onwards) on tablets
Interface languages English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svensk, Nederlands, ???????, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe,

Did you notice a wrong specification? Please let us know.

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