Powerful, scalable, and versatile
Synology DS1621+ is a powerful and compact 6-bay network attached storage solution designed to store and protect critical data assets. Today’s growing amount of unstructured data requires smarter and increasingly higher performance methods of storing, accessing, and collaborating. Designed for scalability, the DS1621+ enables you to start small, then expand as your data grows.
Faster in everything
The DS1621+ is faster in just about everything you can imagine. Get things done quicker through Synology Drive and faster and smoother photos management with Synology Moments.
Turbocharge and supersize it
Upgrade your DS1621+ to match your data requirements, whether it is for faster networking or for higher storage capacity.
2 x M.2 NVMe
Enable ultra-fast NVMe cache to accelerate HDD arrays by 20X or more
10GbE support
Add in faster SFP+ or RJ-45 networking to turbocharge existing workflows
Storage Expansion
Supports two DX517 expansion units for a total of 16 bays
Ultimate file management and sharing
File Station is a web-based, fast and secure management tool built to allow easy, drag-and-drop operations without requiring any complex setup on Mac or PC. Advanced search and filtering tools allow for easy organization and file sharing. For complete compatibility, DS1621+ supports the following protocols: AFP, FTP, iSCSI, NFS, SMB, and WebDAV.
Fully certified storage virtualization solutions
Synology iSCSI storage fully supports most virtualization solutions to enhance work efficiency with easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations and optimizes computation efficiency. Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rate. OpenStack Cinder support turns your Synology NAS into a block-based storage component.
Ultimate Backup Solution
DS1621+ integrates various backup applications into an intuitive user interface, offering durable storage technologies to safeguard your valuable data on any device.
Active Backup for Business
Centralize backup tasks for VMware, Windows, and file servers. Restore whatever you want fast and reliably when needed.
Hyper Backup
Comprehensively back up your data to a local shared folder, an external device, another Synology NAS, an rsync server, or a public cloud to ensure data safety.
Drive Package
Safeguard your computer with Synology Drive Client. Effortlessly perform real-time data backups and point-in-time file recovery.
Active Backup for Microsoft 365 / G Suite
Protect corporate data stored on the cloud. On-premise backup solution with a centralized dashboard. Optimize storage efficiency with single instancing and block-level deduplication technology.
Powered by Synology DSM
Central Management System
Manage multiple Synology NAS servers simultaneously on a centralized interface to increase business efficiency.
Synology MailPlus
Secure, reliable, and private mail server solution with an intuitive and modern mail client.
Synology High Availability
Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.
Security
Comprehensive built-in security tools are constantly updated to protect your devices against evolving threats.
Synology Drive
A versatile solution for file management and synchronization.
Surveillance Station
Complete surveillance solution for recording, monitoring, and management.
Works best with Synology solid-state drives
Engineered to handle intensive 24/7 workloads, Synology SSDs are designed to provide consistent high-performance. More information: Performance | Type | NAS |  | Device class | Home & Home Office | | Backup function | Yes | | Backup features | Cloud, iSCSI LUN | | Multilingual support | Yes | | Number of users | 2048 user(s) | | Noise level | 25.2 dB | | Snapshot | Yes | | Share folder access right management | Yes | | Security algorithms | HTTPS, SSH, SSL/TLS | | Access Control List (ACL) | Yes | | Reset button | Yes | | On/off switch | Yes | | Built-in iTunes server | Yes | | Built-in FTP server | Yes | | Browser supported | Google Chrome, Firefox, Microsoft Edge, Internet Explorer, Safari | | System log | Yes | | Hot spare | Yes | | Share folder | CIFS/AFP/NFS/FTP/WebDAV | Technical details | Sustainability compliance | Yes | | Sustainability certificates | BSMI, CCC, CE, EAC, Federal Communications Commission (FCC), KC, RCM, RoHS, UKCA, VCCI | Design | Chassis type | Desktop | | Cooling type | Active | | Product colour | Black | | Number of fans | 2 fan(s) | | Fan diameter | 92 mm | | Drive bay locking | Yes | | LED indicators | Alarm, HDD, Power, Status | | Cable lock slot | Yes | | Cable lock slot type | Kensington | Processor | Processor family | Ryzen Embedded | | Processor manufacturer | AMD | | Processor model | V1500B | | Processor frequency | 2.2 GHz | | Processor cores | 4 | | Processor threads | 8 | | L2 cache | 2 MB | | L3 cache | 4 MB | | Number of processors supported | 1 | Software | Operating system installed | DiskStation Manager | | Windows operating systems supported | Yes | | Mac operating systems supported | Yes | Memory | Internal memory | 4 GB | | Internal memory type | DDR4 | | Maximum RAM supported | 32 GB | | Memory slots | 2 | | Memory form factor | SO-DIMM | | ECC | Yes | Power | Power supply location | Built-in | | Power supply unit (PSU) capacity | 250 W | | Number of power supply units | 1 | | Power consumption (typical) | 51.22 W | | Power consumption (HDD standby) | 25.27 W | | AC input voltage | 100 - 240 V | | AC input frequency | 50 - 60 Hz | Network | Ethernet LAN | Yes | | Ethernet LAN data rates | 10,100,1000 Mbit/s | | iSCSI support | Yes | | Wake-on-LAN ready | Yes | | Supported network protocols | SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN | | Link aggregation | Yes | | Load balancing system | Yes | Weight & dimensions | Width | 282 mm | | Depth | 243 mm | | Height | 166 mm | Ports & interfaces | Ethernet LAN (RJ-45) ports | 4 | | USB port | Yes | | USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 3 | | eSATA ports quantity | 2 | | PCI Express x8 (Gen 3.x) slots | 1 | | Concurrent connections | 2000 | Storage | Storage drives installed | Yes | | Total installed storage capacity | 24 TB | | Number of storage drives installed | 6 | | Number of storage drives supported | 6 | | Installed storage drive type | HDD | | Supported storage drive types | HDD & SSD | | Storage drive capacity | 4000 GB | | Storage drive interface | Serial ATA III | | RAID support | Yes | | Supported storage drive interfaces | Serial ATA II, Serial ATA III | | Storage drive sizes supported | 2.5,3.5,M.2 " | | Number of M.2 (M | 2 | | RAID levels | 0, 1, 5, 6, 10, JBOD | | Online RAID migration | Yes | | Online RAID expansion | Yes | | Hot-swap drive bays | Yes | | Supported file systems | BTRFS, Fat, HFS+, NTFS, exFAT, ext3, ext4 | Operational conditions | Operating temperature (T-T) | 0 - 40 °C | | Operating relative humidity (H-H) | 5 - 95 % | | Storage temperature (T-T) | -20 - 60 °C | | Storage relative humidity (H-H) | 5 - 95 % | | Operating altitude | 0 - 5000 m | Packaging content | Cables included | AC, LAN (RJ-45) | | Power cables quantity | 1 |
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