Synology DiskStation DS1821+ SAN/NAS Storage System - AMD Ryzen V1500B Quad-core (4 Core) 2.20 GHz - 8 x HDD Supported - 0 x HDD Installed - 8 x SSD Supported - 0 x SSD Installed - 4 GB RAM DDR4 SDRAM - Serial ATA Controller - RAID Supported 0, 1, 5, 6, 10, Basic, Hybrid RAID, JBOD - 8 x Total Bays - 8 x 2.5"/3.5" Bay - 1 x Total Slot(s) - Gigabit Ethernet - eSATA - 4 USB Port(s) - 4 USB 3.0 Port(s) - Network (RJ-45) - DiskStation Manager - AFP, FTP, iSCSI, NFS, SMB, WEBDAV, SMB 1.0, CIFS, DISKLESS
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.
Quad-core 2.2 GHz
Dual M.2 2280 slots for NVMe Cache
113K 4K random read IOPS
Expand up to 18 drives
with two DX517 expansion units
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
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.
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.
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.
Engineered for reliability, backed by Synology
DS1821+ is designed to reliably store your data and is backed by Synology's three-year hardware warranty. An optional two-year extended warranty is available in select regions for up to five years of coverage.
Operating System DiskStation Manager
Standard Memory 4 GB
Memory Technology DDR4 SDRAM
Network & Communication
Ethernet Technology Gigabit Ethernet
Number of Power Supplies Installed 1
Maximum Power Supply Wattage 250 W
RAID Levels 0, 1, 5, 6, 10, Basic, Hybrid RAID, JBOD
Controller Type Serial ATA
RAID Supported Yes
Expansion Slot Type PCI Express 3.0 x8
Number of Total Expansion Bays 8
Number of Total Expansion Slots 1
Number of 2.5"/3.5" Bays 8
Management & Protocols
Number of Hard Drives Supported 8
Number of Hard Drives Installed 0
Number of Solid State Drive Supported 8
Number of Solid State Drive Installed 0
Number of Network (RJ-45) Ports 4
Network (RJ-45) Yes
Total Number of USB Ports 4
Number of USB 3.0 Ports 4
Weight (Approximate) 13.23 lb
Form Factor Desktop
Processor & Chipset
Processor Speed 2.20 GHz
Processor Type Ryzen
Processor Model V1500B
Processor Core Quad-core (4 Core)
Processor Manufacturer AMD
Product Type SAN/NAS Storage System
Manufacturer Part Number DS1821+
Packaged Quantity 1
Manufacturer Synology, Inc
Product Model DS1821+
Product Name DiskStation DS1821+ SAN/NAS Storage System
Product Line DiskStation
Product Series Plus
Brand Name Synology