---
product_id: 257572820
title: "DS1821+"
brand: "synology"
price: "C$219258"
currency: NIO
in_stock: false
reviews_count: 8
url: https://www.desertcart.ni/products/257572820-ds1821
store_origin: NI
region: Nicaragua
---

# 177% faster 4K random read IOPS Dual M.2 NVMe slots for 20x HDD cache boost Scalable to 18 drives with DX517 units DS1821+

**Brand:** synology
**Price:** C$219258
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Unlock next-level NAS power and scale like a pro!

## Quick Answers

- **What is this?** DS1821+ by synology
- **How much does it cost?** C$219258 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/257572820-ds1821)

## Best For

- synology enthusiasts

## Why This Product

- Trusted synology brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Scalability:** Expand your storage on-demand up to 18 drives with two DX517 expansion units—grow as your data grows.
- • **Blazing-Fast Data Access:** Experience 177% higher 4K random read speeds for seamless multitasking and rapid file retrieval.
- • **Turbocharge Your Storage:** Dual built-in M.2 NVMe slots let you accelerate HDD arrays by 20x+ without sacrificing drive bays.
- • **Future-Proof Connectivity:** Add 10GbE SFP+ or RJ-45 NIC cards to instantly boost network bandwidth and keep pace with your infrastructure.
- • **Rock-Solid Data Protection:** Comprehensive backup suite supports public clouds, Windows PCs, servers, VMs, and NAS snapshots for total peace of mind.

## Overview

The Synology DiskStation DS1821+ is a high-performance 8-bay NAS designed for SOHO and SMB users demanding fast, scalable, and reliable storage. Featuring a powerful AMD Ryzen quad-core CPU, 177% faster 4K random read IOPS, dual M.2 NVMe slots for SSD caching, and support for up to 18 drives with expansion units, it delivers exceptional speed and flexibility. With built-in data protection tools and optional 10GbE networking, the DS1821+ future-proofs your data infrastructure while maintaining a compact, quiet desktop form factor.

## Description

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. With performance over 110K or 177% higher, 4K random read IOPS than its predecessor, the DS1821+ is fast, with ample room for scalability.

Review: A GREAT upgrade! - This is my fourth 8-disk Synology DiskStation since 2014. My last one was a DS1817 which included two 10-gigabit Ethernet (RJ45) ports, and you can bet I aggregated those links on my (very expensive) Ubiquiti US-XG-6PoE and had 20-gigabit between this and my primary FreeNAS server. Well, I wanted to setup a secondary Plex server to offload some from my primary FreeNAS, but the DS1817 didn't have an x86 based chipset, so Plex wouldn't run. I bought the DS1821+ and have been (until today) living off 4-gigabit aggregated connections. However, where the DS1821+ really shines is its fairly capable AMD Ryzen quad-core CPU, which feels light years ahead of the DS1817 in terms of NAS performance and Plex transcoding on the fly. I broke out some of my BluRays and tried pretty much uncompressed dumps to the NAS and playback on Plex and it handled them and seeking really surprisingly well. Very happy with the 1821+. I do wish it came with at least a couple of SFP+ ports for connectivity, but this thing has PCI-E and you can toss in NVMe cache drives, more RAM, and an expansion card for 10-gigabit or more NVMe or both. I opted for an Intel X520-DA2 to get my 10 gigabit connectivity back, and the Synology found it right away with basically no configuration (other than bumping up MTU) necessary. Hooray! So if you're looking for a very capable, small form factor NAS with expansion options, the DS1821+ is so far my very favorite 8-bay I've used so far. Looking forward to what future models hold in store!
Review: Great, reliable, fast. Recommend ~$250 in upgrades to maximize performance. - Upgraded from a DS1517+. Super easy upgrade. Much faster. More disk space. Otherwise same build and quality. Stock ram is too little. Recommended unofficial upgrades for those on a budget (keep in mind Synology has official supported hardware if that's important to you): - 32gb RAM - might have compatibility warning depending on manufacturer, should be able to find for <$200 shipped total without compatibility warning. Google "DS1821+ and/or DS1621+ ECC Ram Upgrade Options" to see a list of RAM with/without warnings. - 10gbe NIC - Search around for Mellanox ConnectX-3 MCX311A-XCAT LOW PROFILE, it's plug and play, ~$45. A word of caution regarding nvme cache: it's not necessary for most users (including myself - I don't use it!). Average home users running virtual machines may benefit. If you really want it, only chose official Synology nvme cards or Optane for a cache. Consumer nvme cards WILL cause data loss when they inevitably and prematurely die (look it up). DSM7 will improve nvme cache, but I don't recommend using it until the stable release later this year.

## Features

- Accelerated Performance - 177% higher 4K random read IOPS and 76% faster sequential write speeds compared to its predecessor
- Maximize Performance - Turbocharge HDD arrays by 20x or more without occupying drive bays using dual built-in M.2 slots for NVMe SSD cache
- Expansion Made Easy - Scale-up on-demand to 18 drives with two DX517 expansion units
- Includes Everything to Protect Your Data - Back up critical data to and from public clouds, Windows PCs and servers, virtual machines, and data on the NAS with Synology Active Backup suite, Hyper Backup, and Snapshot Replication
- Ready for 10GbE - Add in a 10GbE SFP+ or RJ-45 NIC to instantly increase network bandwidth based on your existing infrastructure

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08PKLKKVZ |
| Best Sellers Rank | #80 in Network Attached Storage (NAS) Enclosures |
| Brand | Synology |
| Built-In Media | Main Unit X 1, Accessory Pack X 1, AC Power Cord X 1, RJ-45 LAN Cable X 2, Quick Installation Guide X 1 |
| Color | Black |
| Compatible Devices | Desktop |
| Customer Reviews | 4.7 out of 5 stars 336 Reviews |
| Enclosure Material | Metal |
| Is Assembly Required | No |
| Item Height | 12.5 inches |
| Item Weight | 6000 Grams |
| Manufacturer | Synology |
| Mounting Type | Rack Mount |
| Size | 8-bay; 4GB DDR4 |
| UPC | 846504003976 |
| Unit Count | 1.0 Count |
| Warranty Description | 3 Years |

## Product Details

- **Brand:** Synology
- **Color:** Black
- **Size:** 8-bay; 4GB DDR4
- **Material:** Metal
- **Compatible Devices:** Desktop

## Images

![DS1821+ - Image 1](https://m.media-amazon.com/images/I/31qLHqsuxRL.jpg)
![DS1821+ - Image 2](https://m.media-amazon.com/images/I/31vWkFmh58L.jpg)
![DS1821+ - Image 3](https://m.media-amazon.com/images/I/41CJ3DlBftL.jpg)
![DS1821+ - Image 4](https://m.media-amazon.com/images/I/41EJrs7S8sL.jpg)
![DS1821+ - Image 5](https://m.media-amazon.com/images/I/41F2FzIjWQL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ A GREAT upgrade!
*by D***E on June 18, 2021*

This is my fourth 8-disk Synology DiskStation since 2014. My last one was a DS1817 which included two 10-gigabit Ethernet (RJ45) ports, and you can bet I aggregated those links on my (very expensive) Ubiquiti US-XG-6PoE and had 20-gigabit between this and my primary FreeNAS server. Well, I wanted to setup a secondary Plex server to offload some from my primary FreeNAS, but the DS1817 didn't have an x86 based chipset, so Plex wouldn't run. I bought the DS1821+ and have been (until today) living off 4-gigabit aggregated connections. However, where the DS1821+ really shines is its fairly capable AMD Ryzen quad-core CPU, which feels light years ahead of the DS1817 in terms of NAS performance and Plex transcoding on the fly. I broke out some of my BluRays and tried pretty much uncompressed dumps to the NAS and playback on Plex and it handled them and seeking really surprisingly well. Very happy with the 1821+. I do wish it came with at least a couple of SFP+ ports for connectivity, but this thing has PCI-E and you can toss in NVMe cache drives, more RAM, and an expansion card for 10-gigabit or more NVMe or both. I opted for an Intel X520-DA2 to get my 10 gigabit connectivity back, and the Synology found it right away with basically no configuration (other than bumping up MTU) necessary. Hooray! So if you're looking for a very capable, small form factor NAS with expansion options, the DS1821+ is so far my very favorite 8-bay I've used so far. Looking forward to what future models hold in store!

### ⭐⭐⭐⭐⭐ Great, reliable, fast. Recommend ~$250 in upgrades to maximize performance.
*by G***P on February 17, 2021*

Upgraded from a DS1517+. Super easy upgrade. Much faster. More disk space. Otherwise same build and quality. Stock ram is too little. Recommended unofficial upgrades for those on a budget (keep in mind Synology has official supported hardware if that's important to you): - 32gb RAM - might have compatibility warning depending on manufacturer, should be able to find for <$200 shipped total without compatibility warning. Google "DS1821+ and/or DS1621+ ECC Ram Upgrade Options" to see a list of RAM with/without warnings. - 10gbe NIC - Search around for Mellanox ConnectX-3 MCX311A-XCAT LOW PROFILE, it's plug and play, ~$45. A word of caution regarding nvme cache: it's not necessary for most users (including myself - I don't use it!). Average home users running virtual machines may benefit. If you really want it, only chose official Synology nvme cards or Optane for a cache. Consumer nvme cards WILL cause data loss when they inevitably and prematurely die (look it up). DSM7 will improve nvme cache, but I don't recommend using it until the stable release later this year.

### ⭐⭐⭐⭐⭐ So much better than DROBO
*by D***T on November 3, 2024*

Wish I would have bought this instead of the now defunct DBOBO. The device itself is much better with easer and more reliable trays for mounting your drives. The tools and apps are much better and actually includes backup software unlike the DROBO. Backup software works great and was very easy to restore files.

## Frequently Bought Together

- Synology 8 Bay DiskStation DS1821+ (Diskless), 8-bay; 4gb ddr4
- Synology 10Gb Ethernet Adapter 1 RJ45 Port (E10G18-T1)
- NEMIX RAM 32GB (2X16GB) DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 260-PIN ECC Unbuffered SODIMM NAS Memory KIT Compatible with Synology D4ECSO-2666-16G

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-21*