Synology DiskStation DS1821

8-bay NAS server - 4 GB DDR4 RAM - AMD Ryzen V1500B

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The Synology DiskStation DS1821 is a high-performance 8-bay network storage solution that supports all aspects of your business with powerful data management, collaboration, networking, and data protection tools.

8-bay NAS server - 4 GB DDR4 RAM - AMD Ryzen V1500B

Overview

DS1821+: Powerful and Scalable Business NAS

The Synology DiskStation DS1821+ is a high-performance 8-bay network storage solution that supports all aspects of your business with powerful data management, collaboration, and networking tools, as well as comprehensive data protection mechanisms, in a desktop chassis. The two built-in M.2 SSD slots and Synology's SSD caching technology allow you to improve system and application I/O performance.

Its AMD Ryzen V1500B processor (4-Core/8-Threads) and DDR4 ECC memory (expandable to 32GB) ensure smooth handling of heavy workloads and multitasking. It can be combined with a 10GbE network card to further improve responsiveness.

Scalable NAS

Synology DS1821+ is a powerful 8-bay desktop NAS that offers you performance for business storage. The storage capacity can be expanded up to 18 drives with two Synology DX517 expansion units.

The DS1821+ is equipped with Synology's optimized Btrfs file system to give you high reliability and performance. Btrfs supports advanced storage technologies that meet the needs of modern businesses.

SSD Cache

The DS1821+ features built-in M.2 SSD cache slots, capable of providing 20 times faster I/O response speed than HDDs, without occupying the front disk bays.

File Management and Sharing

File Station is a fast and secure web-based management tool. It can be used with simple drag and drop without complicated settings on Mac or PC. Advanced search and filtering tools make it easy to organise and share files. For full compatibility, the DS1621+ supports the following protocols: AFP, FTP, iSCSI, NFS, SMB, WebDAV.

Collaborate on Your Private Cloud

Synology Office is a collaborative package that combines the convenience and ease of use of public clouds with the data privacy and security of private clouds. It allows you to work seamlessly on documents and spreadsheets in a protected environment.

  • Real-time collaboration on the same documents online to increase productivity,
  • Instant communication on Synology Chat while editing documents or spreadsheets
  • Version control allows you to browse through all changes and retrieve previous versions with a single click

Key Features :

  • AMD Ryzen Embedded V1500B Processor (Quad-Core 2.2 GHz - 8 Threads)
  • 4 GB DDR4 ECC SO-DIMM (1 x 4 GB - 2 Slots - 32 GB max.) (D4ES01-4G / D4ES01-8G / D4ECSO-2666-16G)
  • 4 x 1 GbE LAN (with aggregation or failover)
  • PCI-Express 3.0 x8 slot operating in x4 that can accommodate a 10GbE network interface card: E10G18-T2, E10G18-T1, E10G17-F2
  • 8 SATA 6 Gbit/s 2.5"/3.5" bays and two M.2 2280 PCIe 3.0 x4 slots for SSD cache (can be expanded with two DX517)
  • External file system: Btrfs, ext4, ext3, FAT, NTFS, HFS+, exFAT(via additional licence)
  • Collaboration support with Synology Chat, Synology Office online editor, and Synology Calendar scheduling assistant
  • Synology Chat: 1500 users max.
  • Synology MailPlus / MailPlus Server: 150 simultaneous users(5 free accounts)
  • Synology Office: 1800 users max.
  • Maximum number of connections: 30 supported VPN protocols
  • Network Protocols: SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
  • Virtualisation: VMware vSphere 6.5, Microsoft Hyper-V, Citrix, OpenStack
  • Virtual Machine Manager: 8 machines recommended(1 license provided)
  • Security: Firewall, shared folder encryption, SMB encryption, FTP over SSL/TLS, SFTP, rsync over SSH, automatic connection blocking, Let's Encrypt support, HTTPS (customizable encryption suite)
  • One-way or two-way sync with public cloud storage providers, including Alibaba Cloud OSS, Amazon S3 compatible storage system, Backblaze B2, Baidu Cloud, Box, Dropbox, Google Cloud Storage, Google Drive, hubiC, MegaDisk, Microsoft OneDrive, OpenStack Swift compatible storage system, Tencent COS, WebDAV servers and Yandex Disk
  • Maximum number of IP cameras: 40(2 free camera licenses included)
Specifications
Select your criteria

General information

Product name

Synology DiskStation DS1821

Brand

Synology

Model

DS1821+

Processor

CPU frequency

2.2 GHz

Memory size

4 GB

Memory type

DDR4 ECC

Network

Network standard(s)

10/100/1000 Mbps

Network connector(s)

4 X Gigabit Ethernet - RJ45 Female

Wake On LAN

Yes

DLNA certification

Yes

Storage

Capacity

0 GB

Internal interface

8 X Serial ATA 6Gb/s (SATA Revision 3)
2 X M.2 - PCI-E 3.0 x4

Hard drive format

2" 1/2
3" 1/2
M.2

Hard drive

Without hard drive

Number of discs

0

Max number of discs

8

RAID supported

Yes

Supported RAID Modes

Single Disk
SHR
JBOD
6
5
10
1
0

File system

Btrfs
Ext4

Connector(s)

4 X USB 3.0
2 X eSATA
1 X PCI Express 3.0 x8 (x4)

Compatibility

Server functions

FTP
Multimedia
Photo
Video surveillance
Virtualization
Web

Windows ADS

Yes

iSCSI (SCSI encapsulation)

Yes

Download without PC

Yes

Scalable

Yes

Supported OS

Microsoft Windows 8.1
Microsoft Windows 7
Microsoft Windows 10
Mac OS X 10.12 or higher

Physical characteristics

Rackable

No

Sound level

22.2 dB

Consumption

59.8 W

Width

343 mm

Height

166 mm

Depth

243 mm

Weight

6 kg

Warranties

Commercial warranty

Seller 3 years

Legal warranty

See terms & conditions

Product referenced on 10 Dec 2020

Customer reviews
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    9 reviews
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  • by PhilippeE
    Posted on 29 Aug 2023
    Bought on 1 Aug 2023 from LDLC
    Number of reviews: 2 Average rating: 10

    Delighted with the product

    Delivery a little long (24 days from France to New Caledonia) UPS should improve its services to match the price charged. Perfect packaging, product received without any damage. Easy to install, all that's left to do is transfer the data from the old one to the new one. Delighted with the product.

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  • by LoicM
    Posted on 1 Nov 2022
    Bought on 2 Oct 2022 from LDLC
    Number of reviews: 3 Average rating: 8

    Synology ds1821+

    RAS. Product well received but not yet tested as I am waiting for the Toshiba N300 10T price drop.

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  • by RemiC
    Posted on 5 Sep 2022
    Bought on 6 Aug 2022 from LDLC
    Number of reviews: 1 Average rating: 10

    Replacement of a DS1815+.

    Product purchased to replace a DS1815+ which had just given up the ghost during the holidays and hot weather.
    Inserted the disks in the right order, activated the switch, and everything was recovered without having to restore a backup.
    What happiness...

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  • by DidierD
    Posted on 5 Sep 2022
    Bought on 5 Aug 2022 from LDLC
    Number of reviews: 1 Average rating: 10

    Excellent product

    This NAS replaces an older model with the same form factor, which had given up the ghost.
    The big advantage with Synology is that you move the disks from the old one to the new one and in less than 30 minutes, everything is back up and running.
    I would appreciate a little more clarity on availability and delivery from LDLC.

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  • by mike
    Posted on 14 Jun 2022
    Bought on 14 May 2022 from LDLC
    Number of reviews: 1 Average rating: 10

    Very good product but very good service

    Service ok. Delivery on time.
    Availability ok.

    Replaced the old ds1812+ NAS that broke down.

    Physical change of disks on the new NAS. Everything works and restarts without problems.
    Adapted old version to new NAS version without any problem.

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