---
product_id: 462291472
title: "Synology DS1821+ 16TB 8 Bay Desktop NAS Solution, installed with 8 x 2TB Western Digital Red Plus Drives"
brand: "synology"
price: "RM10340"
currency: MYR
in_stock: false
reviews_count: 13
url: https://www.desertcart.com.my/products/462291472-synology-ds1821-16tb-8-bay-desktop-nas-solution-installed-8
store_origin: MY
region: Malaysia
---

# 177% faster 4K random read IOPS 8 bays with 16TB WD Red Plus pre-installed Scale up to 18 drives with expansion units Synology DS1821+ 16TB 8 Bay Desktop NAS Solution, installed with 8 x 2TB Western Digital Red Plus Drives

**Brand:** synology
**Price:** RM10340
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Elevate your data game with Synology DS1821+ — storage that works as hard as you do!

## Quick Answers

- **What is this?** Synology DS1821+ 16TB 8 Bay Desktop NAS Solution, installed with 8 x 2TB Western Digital Red Plus Drives by synology
- **How much does it cost?** RM10340 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/462291472-synology-ds1821-16tb-8-bay-desktop-nas-solution-installed-8)

## 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

- • **NVMe SSD Cache Boost:** Dual built-in M.2 slots turbocharge HDD arrays by 20x+ without sacrificing drive bays, accelerating your workflow instantly.
- • **10GbE Ready Networking:** Plug in a 10GbE SFP+ or RJ-45 NIC to unlock ultra-fast network bandwidth, perfect for high-demand professional environments.
- • **Massive Scalable Capacity:** Start with 16TB and effortlessly expand up to 18 drives using DX517 units—future-proof your data needs without compromise.
- • **Robust Data Protection Suite:** Synology Active Backup, Hyper Backup, and Snapshot Replication safeguard your critical data across clouds, PCs, and virtual machines.
- • **Turbocharged Storage Performance:** Experience 177% higher 4K random read speeds and 76% faster sequential writes for seamless multitasking and data flow.

## Overview

The Synology DS1821+ is a high-performance 8-bay desktop NAS pre-installed with 16TB of reliable Western Digital Red Plus drives. It delivers 177% faster 4K random read IOPS and 76% faster sequential write speeds compared to its predecessor, supports NVMe SSD caching for up to 20x HDD acceleration, and scales up to 18 drives with expansion units. Featuring comprehensive backup solutions and 10GbE network readiness, it’s designed for professionals seeking scalable, secure, and lightning-fast storage.

## Description

Synology DS1821+ 16TB 8 Bay Desktop NAS Solution, installed with 8 x 2TB Western Digital Red Plus Drives

Review: Excellent piece of kit suitable for Home or small business - I'd been told that Synology were tricky to set up. Not True. Adding disks, without the need for fiddly screws etc, then using find.synology.com to install the DSM (disk storage manager) software. It was all a breeze. HYBRID RAID I've set mine up to use SHR1 or 2 (Yep I bought more than one of them) - That's Synology Hybrid RAID with 1 or 2 redundant disks. The storage capacity is pretty good too. Basically, you'll need to deduct 1 or 2 drives worth of storage from the total available for the RAID and a disk extra if you intend to keep a hot spare. - so my 6Tb x 8= 48 theoretical but in practice it is somewhere over 30Tb, with huge safety and failover capability. use the Synology web site to check the calculations with their little graphical tool. Hybrid RAID means that extra disks of any size larger can be swapped in to replace disks on the installation. Handy for when those 3Tb disks reach end of life and are to be replaced with - say - 6Tb or larger drives. PATIENCE REQUIRED Dealing with big numbers means that the initialisation of the RAID takes time. The system has to chug through all of the hard drives performing a parity check and this can take (literally) days. My trick is to build the initial system with just two drives and to create a Storage Pool. That means the drive can be used and directories created etc. Then I can add the other drives and the slow review by the system of the parity/bad sectors can chug along on an otherwise functional system. CACHE DRIVES The Plus (+) series allow the addition of a cache: two small SSD drives (giving RAID 1 protection for Read/Write operations) This is handy and appears to improve throughput. I used Samsung 970 EVO Plus 500 GB PCIe NVMe M.2 (2280) Internal Solid State Drives and they fit into two hidden slots inside the unit. It's like having extra disks inside dedicated to cache operations. NETWORK BIND. There are four 1Gb ethernet connection on the units, which can be bound together to give 4Gb LAN access, if your switch can take it. Another useful performance boost. SOFTWARE: There's a good selection and it uses 'wizard-like' features to guide one through the varied processes. I have only needed a few extra software beyond those pre-installed. They are easy to install and appear to 'just work.' The instructions are well-written and very practical. I found it quite a delight to be guided through most things with a light touch instead of the usual procedural manuals. DISKS: I'm using WD RED and they seem to work reliably and quietly. I'm not getting the noise that some people comment about. In fact I have to look at the lights to know that the things are running. EXTRA MEMORY : Can go up to 32Gb with 2x16Gb kits. I tried it for one unit with DDR4-2666 SODIMM but the end result is that I'm using 2% (Two percent!) of the memory. I haven't bothered with the other units which have a standard 4Gb factory fitted and bob along at 5-7% memory usage. USAGE: I'm using one as a main operations unit, one for backup and a third for off-siting. The operations unit has working files on it and I've figured out how to run most things across the LAN - including Lightroom and Final Cut Pro. It's outside the scope of this review to describe how, but it all works and means I can decommission a Thunderbolt-attached Drobo 5 from one machine. I'm also using a separate volume created on one unit for Time Machine backups of the several machines and laptops that pop up on the LAN. I'm also using a mix of Chronosync (Mac) for backup, as well as HyperBackup between Synology units. It is also handy that the Synology are WAN accessible, so a side-effect of this update has been creation of a private cloud. OVERALL : Very good units. Simple to use, quiet and fast.
Review: Great NAS and better than the newer models! - Unbeatable device and a better buy than the more recent models which are plagued by vendor lock-in restrictions meaning you can only use Synology's own-brand drives, RAM etc (which, funnily enough, are 4-10x more expensive). This device is quite fussy when it comes to RAM upgrades, so make sure you research module compatibility. When it's going, it's rock-solid massive storage with one of the best UIs around.

## 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 more2 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 | B0B7XPBV8V |
| Best Sellers Rank | 53,004 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 129 in Network Attached Storage (NAS) Devices |
| Brand | Synology |
| Colour | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (252) |
| Date First Available | 28 July 2022 |
| Form Factor | 3.5-inch |
| Guaranteed software updates until | unknown |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Rotational Speed | 5400 RPM |
| Hard Drive Interface | Serial ATA |
| Hard Drive Size | 16 TB |
| Hardware Platform | PC |
| Item Weight | 9 kg |
| Item model number | DS1821+/16TB-REDPLUS |
| Manufacturer | Synology |
| Package Dimensions | 44 x 34 x 29 cm; 9 kg |
| Series | DS1821+ |

## Product Details

- **Brand:** Synology
- **Colour:** Black
- **Compatible devices:** Desktop
- **Connectivity technology:** Ethernet
- **Digital storage capacity:** 2000 GB
- **Hard disk description:** Mechanical Hard Disk
- **Hard disk form factor:** 3.5 Inches
- **Hard disk interface:** Serial ATA
- **Hard disk size:** 16 TB
- **Installation type:** Internal Hard Drive

## Images

![Synology DS1821+ 16TB 8 Bay Desktop NAS Solution, installed with 8 x 2TB Western Digital Red Plus Drives - Image 1](https://m.media-amazon.com/images/I/31Sbm9w0ukL.jpg)
![Synology DS1821+ 16TB 8 Bay Desktop NAS Solution, installed with 8 x 2TB Western Digital Red Plus Drives - Image 2](https://m.media-amazon.com/images/I/31n2lKLKcFL.jpg)
![Synology DS1821+ 16TB 8 Bay Desktop NAS Solution, installed with 8 x 2TB Western Digital Red Plus Drives - Image 3](https://m.media-amazon.com/images/I/41-V-HpwTaL.jpg)
![Synology DS1821+ 16TB 8 Bay Desktop NAS Solution, installed with 8 x 2TB Western Digital Red Plus Drives - Image 4](https://m.media-amazon.com/images/I/41FN-RNmeHL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent piece of kit suitable for Home or small business
*by R***E on 7 July 2021*

I'd been told that Synology were tricky to set up. Not True. Adding disks, without the need for fiddly screws etc, then using find.synology.com to install the DSM (disk storage manager) software. It was all a breeze. HYBRID RAID I've set mine up to use SHR1 or 2 (Yep I bought more than one of them) - That's Synology Hybrid RAID with 1 or 2 redundant disks. The storage capacity is pretty good too. Basically, you'll need to deduct 1 or 2 drives worth of storage from the total available for the RAID and a disk extra if you intend to keep a hot spare. - so my 6Tb x 8= 48 theoretical but in practice it is somewhere over 30Tb, with huge safety and failover capability. use the Synology web site to check the calculations with their little graphical tool. Hybrid RAID means that extra disks of any size larger can be swapped in to replace disks on the installation. Handy for when those 3Tb disks reach end of life and are to be replaced with - say - 6Tb or larger drives. PATIENCE REQUIRED Dealing with big numbers means that the initialisation of the RAID takes time. The system has to chug through all of the hard drives performing a parity check and this can take (literally) days. My trick is to build the initial system with just two drives and to create a Storage Pool. That means the drive can be used and directories created etc. Then I can add the other drives and the slow review by the system of the parity/bad sectors can chug along on an otherwise functional system. CACHE DRIVES The Plus (+) series allow the addition of a cache: two small SSD drives (giving RAID 1 protection for Read/Write operations) This is handy and appears to improve throughput. I used Samsung 970 EVO Plus 500 GB PCIe NVMe M.2 (2280) Internal Solid State Drives and they fit into two hidden slots inside the unit. It's like having extra disks inside dedicated to cache operations. NETWORK BIND. There are four 1Gb ethernet connection on the units, which can be bound together to give 4Gb LAN access, if your switch can take it. Another useful performance boost. SOFTWARE: There's a good selection and it uses 'wizard-like' features to guide one through the varied processes. I have only needed a few extra software beyond those pre-installed. They are easy to install and appear to 'just work.' The instructions are well-written and very practical. I found it quite a delight to be guided through most things with a light touch instead of the usual procedural manuals. DISKS: I'm using WD RED and they seem to work reliably and quietly. I'm not getting the noise that some people comment about. In fact I have to look at the lights to know that the things are running. EXTRA MEMORY : Can go up to 32Gb with 2x16Gb kits. I tried it for one unit with DDR4-2666 SODIMM but the end result is that I'm using 2% (Two percent!) of the memory. I haven't bothered with the other units which have a standard 4Gb factory fitted and bob along at 5-7% memory usage. USAGE: I'm using one as a main operations unit, one for backup and a third for off-siting. The operations unit has working files on it and I've figured out how to run most things across the LAN - including Lightroom and Final Cut Pro. It's outside the scope of this review to describe how, but it all works and means I can decommission a Thunderbolt-attached Drobo 5 from one machine. I'm also using a separate volume created on one unit for Time Machine backups of the several machines and laptops that pop up on the LAN. I'm also using a mix of Chronosync (Mac) for backup, as well as HyperBackup between Synology units. It is also handy that the Synology are WAN accessible, so a side-effect of this update has been creation of a private cloud. OVERALL : Very good units. Simple to use, quiet and fast.

### ⭐⭐⭐⭐⭐ Great NAS and better than the newer models!
*by D***N on 28 May 2025*

Unbeatable device and a better buy than the more recent models which are plagued by vendor lock-in restrictions meaning you can only use Synology's own-brand drives, RAM etc (which, funnily enough, are 4-10x more expensive). This device is quite fussy when it comes to RAM upgrades, so make sure you research module compatibility. When it's going, it's rock-solid massive storage with one of the best UIs around.

### ⭐⭐⭐⭐⭐ Quality product
*by A***G on 12 August 2025*

Happy with the 1821 nas drive. Simple to install seagate enterprise hard disks and extra ram. Intuitive Dsm software allows for easy setup of storage volume. Been up and running for a week now, able to access files from various apps around the house.

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---

*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-02-15*