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The Synology DS1821+ is powered by an AMD Ryzen Quad-core 2.2GHz processor, offering enhanced compute capabilities for demanding workloads.
The DS1821+ can support up to 18 drives when expanded with two DX517 expansion units, providing scalable storage solutions.
The DS1821+ supports 10GbE networking, allowing for faster SFP+ or RJ-45 connectivity to optimize existing workflows.
File Station on the DS1821+ supports a variety of protocols, including AFP, FTP, iSCSI, NFS, SMB, and WebDAV, ensuring seamless file management and sharing.
The DS1821+ integrates several backup solutions, including Active Backup for Business, Hyper Backup, and Active Backup for Microsoft 365 / G Suite, to ensure comprehensive data protection and recovery.
Review Summary
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.
If we can’t fix it, we’ll replace it at no additional cost.
Protect your product from drops, spills, and more.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
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.
Browse our FAQ
AMD Ryzen V1500B
64-bit
4-core 2.2 GHz
Yes
4 GB DDR4 ECC SODIMM
4 GB
2
32 GB (2x 16 GB)
8
18 (2x DX517)
2 (NVMe)
3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
M.2 2280 NVMe SSD
108 TB
Yes
4 (with Link Aggregation / Failover support)
4
2
1x Gen3 x8 Slot (x4 link)
Btrfs
EXT4
Btrfs
EXT4
EXT3
FAT
NTFS
HFS+
exFAT
0 Degree C to 40 Degree C (32 Degree F to 104 Degree F)
-20 Degree C to 60 Degree C (-5 Degree F to 140 Degree F)
5% to 95% RH
FCC
CE
BSMI
EAC
CCC
KC
VCCI
RCM
RoHS Compliant
120 mm x 120 mm x 2 pcs
Full-Speed Mode
Cool Mode
Quiet Mode
Yes
Yes
Yes
22.2 dB(A)
Yes
Yes
250 W
100 V to 240 V AC
50/60 Hz, Single Phase
59.8 W (Access)
26.18 W (HDD Hibernation)
204.05 BTU/hr (Access)
89.33 BTU/hr (HDD Hibernation)
6.5 x 13.5 x 9.5" (166 x 343 x 243mm)
13.2 lbs (6kg)
64
128
256
Yes
Yes
Yes
Synology Hybrid RAID
Basic
JBOD
RAID 0
RAID 1
RAID 5
RAID 6
RAID 10
Basic to RAID 1
Basic to RAID 5
RAID 1 to RAID 5
RAID 5 to RAID 6
Synology Hybrid RAID
RAID 1
RAID 5
RAID 6
RAID 10
Synology Hybrid RAID
JBOD
RAID 5
RAID 6
Synology Hybrid RAID
RAID 1
RAID 5
RAID 6
RAID 10
CIFS/AFP/NFS/FTP/WebDAV
1000
2000 (with RAM expansion)
Yes
Yes
2048
256
512
16
Yes
800
Yes
Yes
Yes
Yes
Yes
SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Google Chrome
Firefox
Microsoft Edge
Internet Explorer 10 onwards
Safari 10 onwards
Safari (iOS 10 onwards)
Google Chrome (Android 6.0 onwards)
Brazilian Portuguese, Czech, Danish, Dutch, English, French, German, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese ,Turkish
Yes
Yes
1500
Yes
80
Yes
5 (Licenses required for additional accounts)
150
1,484,000 e-mails per day, approx. 45GB
Yes
Yes
Yes
Yes
Yes
1024
65536
40 (including 2 Free License)
1200 FPS @ 720p (1280x720)
1050 FPS @ 1080p (1920x1080)
600 FPS @ 3M (2048x1536)
440 FPS @ 5M (2591x1944)
320 FPS @ 4K (3840x2160)
1200 FPS @ 720p (1280x720)
1200 FPS @ 1080p (1920x1080)
1120 FPS @ 3M (2048x1536)
600 FPS @ 5M (2591x1944)
480 FPS @ 4K (3840x2160)
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)
550 (the number of connections that can be maintained when the recommended number of hosted files was reached)
1800
Yes
8
8
30
192223248953




With the Synology DiskStation DS1821+ 8-Bay NAS Enclosure, bundled with 8x Toshiba N300 Pro 10TB SATA III 3.5" Internal NAS Hard Drives, you gain a robust and scalable storage solution tailored for IT enthusiasts and small to medium-sized businesses. This powerhouse NAS is engineered to enhance performance and scalability, ensuring your data is secure and efficiently managed.
The DS1821+ is powered by an AMD Ryzen Quad-core 2.2GHz processor, delivering significant improvements in compute capabilities and throughput. This ensures faster completion of workloads, making it ideal for demanding applications and a higher number of concurrent users. With dual M.2 2280 slots for NVMe cache acceleration, you can boost HDD array performance by 20 times or more, optimizing your storage operations.
Expand your storage capacity effortlessly with support for up to 18 drives by integrating two DX517 expansion units. The DS1821+ also supports 10GbE networking, allowing you to enhance your existing workflows with faster SFP+ or RJ-45 connectivity.
For ultimate file management and sharing, the DS1821+ features File Station, a web-based tool that simplifies drag-and-drop operations without complex setups. It supports a wide range of protocols, including AFP, FTP, iSCSI, NFS, SMB, and WebDAV, ensuring seamless compatibility across different systems.
The DS1821+ is fully certified for storage virtualization solutions, supporting VMware vSphere 6 and VAAI integration to optimize computation efficiency. Windows Offloaded Data Transfer (ODX) accelerates data transfer and migration, while OpenStack Cinder support transforms your NAS into a block-based storage component.
As an ultimate backup solution, the DS1821+ integrates various backup applications into an intuitive interface. Active Backup for Business centralizes backup tasks for VMware, Windows, and file servers, while Hyper Backup ensures comprehensive data protection across local and cloud environments. Synology Drive provides real-time data backups and point-in-time file recovery, and Active Backup for Microsoft 365 / G Suite safeguards corporate cloud data with advanced deduplication technology.
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, you can manage multiple NAS servers from a centralized interface, enhancing business efficiency.
Additional features include Synology MailPlus for secure and private email management, Synology High Availability for seamless server transitions, and comprehensive security tools to protect against evolving threats. The DS1821+ also integrates with Surveillance Station for intelligent monitoring and works best with Synology Solid-State Drives, designed for intensive 24/7 workloads to deliver consistent high performance.