Synology

Synology RS2821RP+ RackStation 3U 16-Bay Rackmount NAS

3.4 (2 reviews)

Enterprise-grade 16-bay rackmount NAS built for small and medium businesses needing centralized, scalable data storage.

$3,299.99*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Synology RackStation RS2821RP+ is a 3U rackmount network-attached storage solution designed to serve as the central data hub for small and medium-sized businesses. With 16 drive bays supporting both 3.5-inch and 2.5-inch SATA drives, it offers substantial storage capacity that can scale as your organization's data needs grow. The included redundant power supplies provide an essential layer of hardware resilience, ensuring that a single power supply failure won't take your storage offline. Built in Taiwan and powered by Synology's DiskStation Manager operating system, the RS2821RP+ delivers a comprehensive suite of tools for file sharing, backup, snapshot replication, and virtualization support right out of the box.

Starting with 4GB of DDR4 memory, the RS2821RP+ is ready for standard file serving and backup duties, with the option to expand RAM for more intensive tasks such as running virtual machines or supporting a larger number of concurrent users. The unit supports a wide range of RAID configurations, from basic JBOD and RAID 0 for maximum capacity to RAID 6 and SHR for enhanced data protection. For businesses looking to centralize their data management, streamline their backup strategy, or deploy surveillance and collaboration tools, the RS2821RP+ offers a proven and well-supported platform backed by Synology's extensive software ecosystem.

Key Features

Product Type: Computer Input Device Accessory

Package Quantity: 1

Product Dimensions: 30.48 cms (L) x 63.5 cms (W) x 88.9 cms (H)

Country Of Origin: Taiwan

Specifications

Brand
Synology
Model
RS2821RP+
Form Factor
3U Rackmount
Number of Bays
16
Memory
4GB DDR4
Power Supply
Redundant (RP+)
Dimensions
30.48 x 63.5 x 88.9 cm
Country of Origin
Taiwan

Pros & Cons

👍 Pros

  • 16 bays in a single 3U chassis provide substantial raw storage capacity and room for expansion
  • Redundant power supplies included for high availability and protection against power supply failure
  • Runs Synology DiskStation Manager (DSM) with a mature ecosystem of backup, surveillance, and collaboration packages
  • Supports multiple RAID configurations including Synology Hybrid RAID for flexible data protection
  • Hot-swappable drive bays allow you to replace drives without powering down the unit

👎 Cons

  • Drives are sold separately, so the total cost of a fully populated unit is significantly higher than the base price
  • At 3U, it occupies more rack space than compact 1U or 2U NAS alternatives
  • Ships with only 4GB of RAM, which may need upgrading for heavier virtualization or multi-user workloads
  • The unit's size and weight make it impractical for environments without a proper server rack

Frequently Asked Questions

It ships with 4GB of DDR4 RAM. Synology's RS2821RP+ supports memory expansion for more demanding workloads and additional concurrent users.
The RS2821RP+ supports 3.5-inch and 2.5-inch SATA HDDs and SSDs across all 16 bays, allowing you to mix storage types based on your performance and capacity needs.
Yes, the "RP+" designation indicates it comes with redundant power supplies, providing failover protection so the NAS stays online even if one power supply fails.
It supports Synology Hybrid RAID (SHR), RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, and JBOD, giving you flexibility to balance performance, capacity, and redundancy.
The RS2821RP+ is a 3U rackmount form factor, designed to fit standard 19-inch server racks. Its dimensions are approximately 30.5 x 63.5 x 88.9 cm.