Synology DiskStation DS1821+ NAS Desktop Ryzen Embedded V1500B 4 GB DDR4 16 TB HDD DiskStation Manager Black

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  • 16TB
  • AMD Ryzen V1500B (4x 2.2GHz)
  • 4GB DDR4
  • 8x 2.5"/3.5" SATA
  • 2x M.2
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SKU #: DS1821+/16T/4X4T
UNSPSC #: 43201835
Designed for scalability and performance
The 8-bay Synology DS1821+ is aimed at IT enthusiast and SMB customers looking for a powerful and scalable storage solution, its business-grade backup solutions keep users safe and protected from potential data loss, while major improvements to compute capabilities and throughput means workloads are finished faster than ever before.

A powerhouse on all fronts
The DS1821+ can handle demanding application workloads and a greater number of concurrent users. Experience faster file indexing in Synology Drive, photo organization in Moments, and more responsive web services.

Turbocharge and supersize it
Upgrade your DS1821+ 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 18 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, DS1821+ 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
DS1821+ 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 / Google Workspace
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 DiskStation Manager

Central Management System
Conveniently manage your fleet of Synology NAS from a centralized console.
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
Secure data with comprehensive built-in security tools to protect your devices against evolving threats.
Synology Drive
Instantly access your NAS files across multiple devices whenever you want, wherever you are.
Surveillance Station
Complete surveillance solution for recording, monitoring, and management.

Works best with Synology drives
Engineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance.
SKU DS1821+/16T/4X4T
Manufacturer Synology
In Stock N
Storage
Total installed storage capacity16 TB
Online RAID migrationYes
Online RAID expansionYes
Storage drives installedYes
Installed storage drive typeHDD
Number of storage drives installed4
Supported storage drive typesHDD & SSD
Number of storage drives supported8
Storage drive interfaceSerial ATA III
Storage drive capacity4 TB
Hot-swap drive baysYes
RAID supportYes
Supported file systemsBTRFS, Fat, HFS+, NTFS, exFAT, ext3, ext4
RAID levels0, 1, 5, 6, 10, JBOD
Supported storage drive interfacesM.2, Serial ATA II, Serial ATA III
Storage drive sizes supported2.5,3.5,M.2
Number of M.2 (M & B) slots2
Processor
Processor generationAMD Ryzen Embedded V1000 Series
Processor manufacturerAMD
Processor threads8
Processor frequency2.2 GHz
Processor familyRyzen Embedded
Processor modelV1500B
Processor cores4
L3 cache4 MB
L2 cache2 MB
Number of processors supported1
Memory
Internal memory typeDDR4
Internal memory4 GB
Maximum RAM supported32 GB
Memory slots2
Memory form factorSO-DIMM
ECCYes
Network
Link aggregationYes
Ethernet LANYes
Ethernet LAN data rates10,100,1000 Mbit/s
Wake-on-LAN readyYes
Supported network protocolsSMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN
iSCSI supportYes
Ports & interfaces
USB portYes
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity4
PCI Express x8 (Gen 3.x) slots1
Ethernet LAN (RJ-45) ports4
eSATA ports quantity2
Hard drive
RAID supportYes
Supported file systemsBTRFS, Fat, HFS+, NTFS, exFAT, ext3, ext4
RAID levels0, 1, 5, 6, 10, JBOD
Design
Cooling typeActive
Fan diameter12 cm
Drive bay lockingYes
Cable lock slot typeKensington
Product colourBlack
Number of fans2 fan(s)
LED indicatorsAlarm, HDD, LAN, Power, Status
Chassis typeDesktop
Cable lock slotYes
Technical details
TypeNAS
Device classHome & Home Office
Backup functionYes
Backup featuresCloud, iSCSI LUN
Product colourBlack
Number of users2048 user(s)
Noise level22.2 dB
Multilingual supportYes
LED indicatorsAlarm, HDD, LAN, Power, Status
Chassis typeDesktop
Number of fans2 fan(s)
Sustainability complianceYes
Compliance certificatesBSMI, CCC, CE, EAC, Federal Communications Commission (FCC), KC, RCM, RoHS, UKCA, VCCI
Performance
Built-in FTP serverYes
System logYes
Share folder access right managementYes
Share folderSMB/AFP/NFS/FTP/WebDAV
Hot spareYes
Browser supportedChrome, Firefox, Edge, Internet Explorer, Safari
TypeNAS
Device classHome & Home Office
Backup functionYes
Backup featuresCloud, iSCSI LUN
On/off switchYes
Windows operating systems supportedYes
Mac operating systems supportedYes
Security algorithmsHTTPS, SSH, SSL/TLS
Reset buttonYes
Operating system installedDiskStation Manager
Number of users2048 user(s)
Noise level22.2 dB
Multilingual supportYes
Access Control List (ACL)Yes
SnapshotYes
Cooling
Cooling typeActive
Fan diameter12 cm
Number of fans2 fan(s)
Security
Drive bay lockingYes
Cable lock slot typeKensington
Security algorithmsHTTPS, SSH, SSL/TLS
Cable lock slotYes
Access Control List (ACL)Yes
Software
Windows operating systems supportedYes
Mac operating systems supportedYes
Operating system installedDiskStation Manager
Management features
On/off switchYes
Reset buttonYes
Power
Power consumption (HDD standby)26.18 W
Power supply locationBuilt-in
Power supply unit (PSU) capacity250 W
AC input voltage100 - 240 V
AC input frequency50 - 60 Hz
Redundant power supply (RPS) supportNo
Power consumption (typical)59.8 W
Number of power supply units1
Weight & dimensions
Width343 mm
Depth243 mm
Height166 mm
Packaging content
Cables includedAC, LAN (RJ-45)
Power cables quantity1
Sustainability
Sustainability complianceYes
System requirements
Windows operating systems supportedYes
Mac operating systems supportedYes
Operational conditions
Storage temperature (T-T)-20 - 60 °C
Storage relative humidity (H-H)5 - 95%
Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)5 - 95%
Operating altitude0 - 5000 m
Packaging data
Cables includedAC, LAN (RJ-45)
Other features
Compliance certificatesBSMI, CCC, CE, EAC, Federal Communications Commission (FCC), KC, RCM, RoHS, UKCA, VCCI