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Questions & Answers

FAQ

What processor powers the Synology DiskStation DS1821+?

The Synology DiskStation DS1821+ is powered by an AMD Ryzen Quad-core 2.2GHz processor, offering high-performance computing capabilities.

How can I expand the storage capacity of the DS1821+?

You can expand the storage capacity of the DS1821+ by adding up to two DX517 expansion units, allowing support for a total of 18 drives.

What networking capabilities does the DS1821+ support?

The DS1821+ supports 10GbE networking, which enhances workflow efficiency and speed with faster SFP+ or RJ-45 networking options.

Which file management protocols are compatible with the DS1821+?

The DS1821+ is compatible with a wide range of file management protocols, including AFP, FTP, iSCSI, NFS, SMB, and WebDAV.

What backup solutions does the DS1821+ offer?

The DS1821+ offers integrated backup solutions such as Active Backup for Business and Hyper Backup, ensuring comprehensive data security and recovery.

Reviews about this item

Review Summary

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

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TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Malfunction Protection

Malfunction Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for purchase Internationally or in U.S. Territories.

Synology DS1821+ & N300 Pro Specifications

Hardware: CPU

Hardware: CPU

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  • CPU Model

    AMD Ryzen V1500B

  • CPU Architecture

    64-bit

  • CPU Frequency

    4-core 2.2 GHz

  • Hardware Encryption Engine (AES-NI)

    Yes

Hardware: Memory

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  • System Memory

    4 GB DDR4 ECC SODIMM

  • Memory Module Pre-installed

    4 GB

  • Total Memory Slots

    2

  • Maximum Memory Capacity

    32 GB (2x 16 GB)

Hardware: Storage

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  • Drive Bays

    8

  • Maximum Drive Bays with Expansion Unit

    18 (2x DX517)

  • M.2 Drive Slots

    2 (NVMe)

  • Compatible Drive Type

    3.5" SATA HDD
    2.5" SATA HDD
    2.5" SATA SSD
    M.2 2280 NVMe SSD

  • Maximum Single Volume Size

    108 TB

  • Hot Swappable Drive

    Yes

Hardware: External Ports

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  • RJ-45 1GbE LAN Port

    4 (with Link Aggregation / Failover support)

  • USB 3.0 Port

    4

  • eSATA Port

    2

Hardware: PCIe

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  • PCIe Expansion

    1x Gen3 x8 Slot (x4 link)

Hardware: File System

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  • Internal Drives

    Btrfs
    EXT4

  • External Drives

    Btrfs
    EXT4
    EXT3
    FAT
    NTFS
    HFS+
    exFAT

Hardware: Temperature

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  • Operating Temperature

    0 Degree C to 40 Degree C (32 Degree F to 104 Degree F)

  • Storage Temperature

    -20 Degree C to 60 Degree C (-5 Degree F to 140 Degree F)

  • Relative Humidity

    5% to 95% RH

  • Certification

    FCC
    CE
    BSMI
    EAC
    CCC
    KC
    VCCI
    RCM

  • Environment

    RoHS Compliant

Hardware: Others

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  • System Fan

    120 mm x 120 mm x 2 pcs

  • Fan Speed Mode

    Full-Speed Mode
    Cool Mode
    Quiet Mode

  • Easy Replacement System Fan

    Yes

  • Brightness Adjustable

    Yes

  • Power Recovery

    Yes

  • Noise Level

    22.2 dB(A)

  • Scheduled Power On / Off

    Yes

  • Wake on LAN / WAN

    Yes

  • Power Supply Unit / Adapter

    250 W

  • AC Input Power Voltage

    100 V to 240 V AC

  • Power Frequency

    50/60 Hz, Single Phase

  • Power Consumption

    59.8 W (Access)
    26.18 W (HDD Hibernation)

  • British Thermal Unit

    204.05 BTU/hr (Access)
    89.33 BTU/hr (HDD Hibernation)

  • Dimensions (H x W x D)

    6.5 x 13.5 x 9.5" (166 x 343 x 243mm)

  • Weight

    13.2 lbs (6kg)

Software: Storage Management

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  • Maximum Internal Volume Number

    64

  • Maximum iSCSI Target Number

    128

  • Maximum iSCSI LUN

    256

  • iSCSI LUN Clone/Snapshot, Windows ODX

    Yes

  • SSD Read / Write Cache

    Yes

  • SSD TRIM

    Yes

  • Supported RAID Type

    Synology Hybrid RAID
    Basic
    JBOD
    RAID 0
    RAID 1
    RAID 5
    RAID 6
    RAID 10

  • RAID Migration

    Basic to RAID 1
    Basic to RAID 5
    RAID 1 to RAID 5
    RAID 5 to RAID 6

  • Volume Expansion with Larger HDDs

    Synology Hybrid RAID
    RAID 1
    RAID 5
    RAID 6
    RAID 10

  • Volume Expansion by Adding a HDD

    Synology Hybrid RAID
    JBOD
    RAID 5
    RAID 6

  • Global Hot Spare Supported RAID Type

    Synology Hybrid RAID
    RAID 1
    RAID 5
    RAID 6
    RAID 10

Software: File Services

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  • File Protocol

    CIFS/AFP/NFS/FTP/WebDAV

  • Maximum Concurrent Connections

    1000
    2000 (with RAM expansion)

  • Windows Access Control List Integration

    Yes

  • NFS Kerberos Authentication

    Yes

Software: Account & Shared Folder

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  • Maximum Local User Accounts

    2048

  • Maximum Local Groups

    256

  • Maximum Shared Folder

    512

  • Maximum Shared Folder Sync Tasks

    16

Software: High Availability

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  • Synology High Availability

    Yes

Software: Log Center

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  • Syslog Events per Second

    800

Software: Virtualization

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  • VMware vSphere 6 with VAAI

    Yes

  • Windows Server 2016

    Yes

  • Windows Server 2019

    Yes

  • Citrix Ready

    Yes

  • OpenStack

    Yes

Software: General Specifications

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  • Networking Protocols

    SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV

  • Supported Browsers

    Google Chrome
    Firefox
    Microsoft Edge
    Internet Explorer 10 onwards
    Safari 10 onwards
    Safari (iOS 10 onwards)
    Google Chrome (Android 6.0 onwards)

  • Supported Language

    Brazilian Portuguese, Czech, Danish, Dutch, English, French, German, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese ,Turkish

Software: Add-on Packages

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  • Antivirus by McAfee (Trial)

    Yes

Software: Central Management

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  • Central Management System

    Yes

Software: Synology Chat

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  • Maximum Users

    1500

Software: Document Viewer

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  • Document Viewer

    Yes

Software: Download Station

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  • Maximum Concurrent Download Tasks

    80

Software: exFAT Access

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  • exFAT Access (Optional)

    Yes

Software: Synology MailPlus/Server

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  • Free Email Accounts

    5 (Licenses required for additional accounts)

  • Maximum Number of Concurrent Users

    150

  • Maximum Server Performance

    1,484,000 e-mails per day, approx. 45GB

Software: Media Server

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  • DLNA Compliance

    Yes

Software: Moments

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  • Facial Recognition

    Yes

  • Subject Recognition

    Yes

  • Auto Color & Rotate

    Yes

  • Moments Select

    Yes

Software: Snapshot Replication

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  • Maximum Snapshots per Shared Folder

    1024

  • Maximum of System Snapshots

    65536

Software: Surveillance Station

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  • Maximum IP Cam

    40 (including 2 Free License)

  • Total FPS (H.264)

    1200 FPS @ 720p (1280x720)
    1050 FPS @ 1080p (1920x1080)
    600 FPS @ 3M (2048x1536)
    440 FPS @ 5M (2591x1944)
    320 FPS @ 4K (3840x2160)

  • Total FPS (H.265)

    1200 FPS @ 720p (1280x720)
    1200 FPS @ 1080p (1920x1080)
    1120 FPS @ 3M (2048x1536)
    600 FPS @ 5M (2591x1944)
    480 FPS @ 4K (3840x2160)

Software: Synology Drive

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  • Recommended Number of Hosted Files

    1,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)

  • Recommended Number of Sync Clients

    550 (the number of connections that can be maintained when the recommended number of hosted files was reached)

Software: Synology Office

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  • Maximum Users

    1800

Software: Video Station

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  • Video Station

    Yes

Software: Virtual Machine Manager

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  • Recommended Virtual Machine Instances

    8

  • Recommended Virtual DSM Number

    8

Software: VPN Server

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  • Maximum Connections

    30

  • UPC Code

    192223248939

7 Accessories for Synology Diskstation DS1821+ 8-Bay NAS Enclosure, Bundle with 8x Toshiba N300 Pro 6TB SATA III 3.5" Internal NAS Hard Drive

  • All Accessories (7)
  • SSD Drives (2)
  • Drives & Storage (2)
  • Ram (1)
  • Cables & Adapters (2)

About Synology DS1821+ & N300 Pro

Let the Synology DiskStation DS1821+ 8-Bay NAS Enclosure redefine your storage experience with its robust scalability and exceptional performance. Tailored for IT enthusiasts and small to medium-sized businesses, this powerful NAS solution ensures your data is secure and easily accessible. With business-grade backup solutions, you can protect against potential data loss while benefiting from enhanced compute capabilities and throughput, allowing you to complete workloads faster than ever.

At the heart of the DS1821+ is an AMD Ryzen Quad-core 2.2GHz processor, delivering impressive performance with 113K 4K random read IOPS. The dual M.2 2280 slots for NVMe cache acceleration significantly boost HDD array speeds by 20 times or more, ensuring rapid data access and processing. For those needing expanded storage, the DS1821+ supports up to 18 drives with the addition of two DX517 expansion units.

This NAS enclosure is a powerhouse, adept at handling demanding application workloads and supporting a larger number of concurrent users. Enjoy faster file indexing with Synology Drive, efficient photo organization in Moments, and more responsive web services. Enhance your network capabilities with 10GbE support, allowing you to integrate faster SFP+ or RJ-45 networking to streamline existing workflows.

The DS1821+ excels in file management and sharing with its intuitive File Station, a web-based tool that simplifies drag-and-drop operations without complex setup on Mac or PC. Advanced search and filtering tools facilitate easy organization and sharing of files. It supports a wide range of protocols, including AFP, FTP, iSCSI, NFS, SMB, and WebDAV, ensuring complete compatibility across different systems.

For virtualization, Synology iSCSI storage is fully certified and supports most solutions to boost work efficiency. Integration with VMware vSphere 6 and VAAI optimizes storage operations, while Windows Offloaded Data Transfer (ODX) accelerates data transfer and migration. OpenStack Cinder support transforms your NAS into a block-based storage component.

The DS1821+ offers an ultimate backup solution, integrating various applications into a user-friendly interface. Active Backup for Business centralizes backup tasks for VMware, Windows, and file servers, ensuring fast and reliable restoration. Hyper Backup allows comprehensive data backups to local folders, external devices, other Synology NAS units, rsync servers, or public clouds. Safeguard your computer with Synology Drive Client for real-time data backups and point-in-time file recovery. Protect corporate cloud data with Active Backup for Microsoft 365 and G Suite, optimizing storage with single instancing and block-level deduplication.

Engineered for reliability, the DS1821+ is backed by Synology's three-year hardware warranty, with an optional two-year extension available in select regions. Powered by the Synology DSM Central Management System, manage multiple NAS servers efficiently from a centralized interface. Synology MailPlus offers a secure, reliable mail server solution, while Synology High Availability ensures seamless transitions between clustered servers during failures. Built-in security tools are constantly updated to protect against evolving threats.

Enhance your file management and synchronization with Synology Drive, and monitor your environment with the intelligent Surveillance Station. For optimal performance, pair the DS1821+ with Synology Solid-State Drives, designed to handle intensive 24/7 workloads with consistent high performance.

Synology DS1821+ & N300 Pro Features

  • Accelerated Performance
  • Maximize Performance
  • Expansion Made Easy
  • Includes Everything to Protect Your Data
  • Ready for 10GbE

Product Documents

User Manual

Key Features

  • Get ample storage with this 48TB NAS enclosure, perfect for backing up all your crucial home or office data.
  • Ensure data security with RAID options, protecting your files from drive failure on this Synology DiskStation.
  • Experience fast performance with the AMD Ryzen CPU, ideal for quick file access and smooth streaming media.
  • Enjoy easy setup and management with Synology's intuitive DiskStation Manager (DSM) for seamless control.
  • Access your files remotely from anywhere, ensuring your data is always available with this reliable NAS.
  • Scale your storage as needed with 8 bays, expandable for growing data demands using expansion units.

What's in the box:

  • Synology Diskstation DS1821+ 8-Bay NAS Enclosure
  • Accessory Pack
  • AC Power Cord
  • 2x RJ-45 LAN Cable
  • Quick Installation Guide
  • Synology 3 Year Limited Warranty
  • Bundle Includes:
  • 8x Toshiba N300 Pro 6TB SATA III 3.5" Internal NAS Hard Drive