Synology DiskStation DS1821+ 8-bay NAS Server

Synology Part #/MPN: DS1821-PLUS

DiscTech Item #: SYN-DS1821-PLUS-BN-3Y

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Interface Types: SATA, eSATA External, USB 3.0 3.1 3.2, Ethernet RJ45

Form Factor: 3.5inx1.0in LFF Hard Drive

Encryption/SED Supported

Electrical Interface: Ethernet Gigabit - 1Gbps

On-Board Cache: 4GB

Bays/Ports/Slots: 5

Wattage/VA: 250W

Voltage: 110-240V Multi

Synology DiskStation DS1821+ 8-bay SATA Quad Core NAS Server - Diskless - Brand New

Synology DiskStation DS1821+ 8-bay SATA / Serial ATA Quad Core NAS / Network Attached Storage Server - Diskless - Brand New

Synology Diskstation DS1821+ 8-bay Network Attached Storage Server includes ...

  • 4x USB 3.2 ports
  • 2x eSATA ports
  • 4x Ethernet RJ45 1Gb LAN ports
  • 4 GB DDR4 ECC SODIMM expandable up to 32 GB (16 GB X 2)
  • 8 drive bays, expandable to 18 when paired with an expansion unit
  • AMD RyzenTM V1500B quad-core 2.2 GHz
  • accepts 3.5" and 2.5" SATA hard drives and 2.5" SATA Solid State Drives.
  • Encryption capable

DiskStation DS1821+

High-capacity storage and data protection for anyone
Synology DiskStation DS1821+ is a powerful 8-bay network-attached-storage solution designed to store and protect missioncritical data. Designed to tackle increasing amounts of unstructured data, the low-noise desktop form-factor of the DS1821+ is built for both SOHO and SMB environments

  • Accelerated Performance                      177% higher 4K random read IOPS and 76% faster sequential write speeds compared to its predecessor1 
  • Maximize Performance                Turbocharge HDD arrays without occupying drive bays using dual built-in M.2 slots for NVMe SSD cache 
  • Expansion Made Easy                            Scale up on demand to 16 drives with two DX517 expansion units2 
  • Ready for 10/25GbE                            Supports 10GbE SFP+/RJ-45 and 25GbE SFP28 NICs to instantly increase network bandwidth based on your infrastructure

Model NumberDS1821+/DS1821-PLUS
CPU ModelAMD RyzenTM V1500B quad-core 2.2 GHz
CPU Architecture64-bit
CPU FrequencyQuad Core 2.2 GHz
Hardware Encryption EngineYes
System Memory4 GB DDR4
Memory Module Pre-installed4 GB (4 GB x 1)
Total Memory Slots2
Memory Expandable up to32 GB (16 GB x 2)
Drive Bay(s)8
Maximum Drive Bays with Expansion Unit18
M.2 Drive Slots2 (NVMe)
Compatible Drive Type
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
  • M.2 2280 NVME SSD
  • Maximum, Internal Raw Capacity112 TB (14 TB HDD x 8) (Capacity may vary by RAID types)
    Maximum Raw Capacity with Expansion Units252 TB (112 TB H+ 14 TB drive x 10) (Capacity may vary by RAID types)
    Maximum Single Volume Size108 TB
    Hot Swappable DrivesYes
    RJ-45 1GbE LAN Port4 (with Link Aggregation / Failover support)
    USB 3.2 Port4
    eSATA Port2
    PCIe Expansion1 x Gen3 x8 slot (black, x4 link)
    Add-in-card support
  • M2D18 - Dual M.2 SATA/NVMe SSD adapter card for SSD cache
  • PCIe Network Interface Card
    Size (Height x Width x Depth)166 mm x 343 mm x 243 mm
    Weight6 kg
    System Fan120 mm x 120 mm x 2 pcs
    Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Easy Replacement System FanYes
    Brightness adjustable front LED indicatorsYes
    Power RecoveryYes
    Noise Level22.2 dB(A)
    Scheduled Power On/OffYes
    Wake on LAN/WANYes
    Power Supply Unit / Adapter250W
    AC Input Power Voltage100V to 240V AC
    Power Frequency50/60 HZ, Single Phase
    Power Consumption
  • 59.8 W (Access)
  • 26.18 W (HDD Hibernation)
  • British Thermal Unit204.05 BTU/hr (access)
    89.33 BTU/hr (HDD Hibernation)
    Operating Temperature
  • 0°C to 40°C
  • 32°F to 104°F
  • Storage Temperature
  • -20°C to 60°C
  • -5°F to 140°F
  • Relative Humidity5% to 95% RH
  • FCC
  • CE
  • BSMI
  • EAC
  • VCCI
  • CCC
  • RCM
  • KC

  • Click here to view the manufacturer's item description/brochure

    ROHS Compliant

    Alternate MPNs: DS1821+

    Weight: 14 lb

    Warranty: 3 Year Manufacturer

    Brand New

    Condition Levels Explained

    The product is brand new.

    3 Year Manufacturer Warranty

    Product Warranties Explained

    The product has a manufacturer warranty for the time period specified.