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FEATURES:
- High Performance – Supports critical workloads with up to 2,200MB/s read and 1,164MB/s write performance
- Redundant Power – Maximise uptime with two redundant power supply units
- Expansion Options – Scale up to 28× drives with the RX1217(RP) and add 10/25GbE networking or fast NVMe SSD Cache with PCIe add-on cards
- High Availability – Combine two devices into a Synology High Availability cluster for maximum service uptime and minute-level failover
Synology RackStation RS2821RP+ | 16-Bay NAS, AMD Ryzen V1500B Quad-Core 2.2GHz, 4GB RAM - Diskless
Reliable Data Management for Business Workloads
The Synology RackStation RS2821RP+ is a 3U 16-bay rackmount NAS with cost-effective file management, sharing and backup capabilities, specially designed for small business and remote office deployments. Powered by Synology’s DiskStation Manager (DSM), the RS2821RP+ units come with powerful built-in business services and can easily be expanded with SSD cache and 10/25GbE networking capabilities.
FEATURES:
- High Performance - Supports critical workloads with up to 2,200MB/s read and 1,164MB/s write performance
- Redundant Power - Maximise uptime with two redundant power supply units
- Expansion Options - Scale up to 28× drives with the RX1217(RP) and add 10/25GbE networking or fast NVMe SSD Cache with PCIe add-on cards
- High Availability - Combine two devices into a Synology High Availability cluster for maximum service uptime and minute-level failover
SPECIFICATIONS:
| HARDWARE | |
| CPU | AMD Ryzen V1500B Quad-Core 2.2GHz |
| Hardware Encryption Engine | Yes (AES-NI) |
| Memory | 4GB DDR4 ECC UDIMM (Expandable up to 32GB) |
| Compatible Drive Types | 16× 3.5" or 2.5" SATA HDD/SSD (Drives not Included) |
| Only Synology SAT5200 2.5" or Synology SNV3400/3500 M.2 SSDs (Sold Separately) Can Be Used for SSD Cache | |
| Hot Swappable Drive | Yes |
| External Ports | 2× USB3.2 Gen1 Ports |
| 1× Expansion Port (Infiniband) | |
| Form Factor | Rackmount 3U |
| Size (H × W × D) | 132.3 × 482 × 656.5mm (with Server Handles) |
| Weight | 17.1kg |
| Rack Installation Support | 4-Post 19" Rack |
| LAN Ports | 4× 1GbE RJ45 |
| Wake on LAN/WAN | Yes |
| PCIe 3.0 Slot | 1× 4-Lane x8 Slot |
| Supports Network Interface Cards and M.2 NVMe SSD Adapter Cards for SSD Cache | |
| Scheduled Power On/Off | Yes |
| System Fans | 3× (80 × 80 × 32mm) |
| AC Input Power Voltage | 100~240VAC |
| Power Frequency | 50/60Hz, Single Phase |
| Operating Temperature | 0~35°C |
| Storage Temperature | -20~60°C |
| Relative Humidity | 5~95% RH |
| Maximum Operating Altitude | 5,000m |
| GENERAL DSM SPECIFICATION | |
| Networking Protocols | SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN, L2TP) |
| File Systems | Internal: Btrfs, ext4 |
| External: Btrfs, ext4, ext3, FAT32, NTFS, HFS+, exFAT10 | |
| Supported RAID Types | Synology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 |
| Storage Management | Maximum Single Volume Size: 108TB |
| Maximum System Snapshots: 65,53611 | |
| Maximum Internal Volumes: 64× | |
| SSD Cache | Read/Write Cache Support |
| 2.5" SATA SSD Support | |
| M.2 NVMe SSD Support | |
| File sharing Capabilities | Maximum Local User Accounts: 2,048× |
| Maximum Local Groups: 256× | |
| Maximum Shared Folders: 512× | |
| Maximum Concurrent SMB/NFS/AFP/FTP Connections: 1,00012 | |
| Privileges | Windows Access Control List (ACL), Application Privileges |
| Directory Services | Connects with Windows AD/LDAP Servers Enabling Domain Users to Login via SMB/NFS/AFP/FTP/File Station Using Their Existing Credentials |
| Virtualisation | VMware vSphere, Microsoft Hyper-V, Citrix, OpenStack |
| Security | Firewall, Shared Folder Encryption, SMB Encryption, FTP over SSL/TLS, SFTP, rsync over SSH, Login Auto Block, Let's Encrypt Support, HTTPS (Customisable Cipher Suite) |
| Supported Clients | Windows 7 Onwards, macOS 10.12 Onwards |
| Supported Browsers | Chrome, Firefox, Edge, Internet Explorer 10 Onwards, Safari 10 Onwards, Safari (iOS 10 Onwards), Chrome (Android 6.0 Onwards) on Tablets |
| Interface Languages | English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svensk, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český |
| PACKAGES AND APPLICATIONS | |
| FILE SERVER AND SYNCHRONISATION | |
| Drive | Synchronises Files Across Windows, macOS, Linux, Android and iOS. The Built-In Cross-Platform Portal Allows Access to Data Anytime and Anywhere |
| Maximum Number of Hosted Files: 1,000,000 | |
| Maximum Number of Concurrent Connections for PC Clients: 550× | |
| File Station | Provides Virtual Drives, Remote Folders, Windows ACL Editor, Compression/Extraction of Archived Files, Bandwidth Control for Specific Users/Groups, Creation Of Sharing Links and Transfer Logs |
| FTP Server | Supports Bandwidth Control for TCP Connections, Custom FTP Passive Port Ranges, Anonymous FTP, FTP over TLS/SSL and SFTP Protocols, Network Booting with TFTP and PXE Support and Transfer Logs |
| Presto File Server | Enables High-Speed Data Transfer over WAN Through the Exclusive SITA Technology Between Synology NAS and Desktop |
| Cloud Sync | Offers One or Two-Way Synchronisation with Public Cloud Storage Providers Including Alibaba Cloud OSS, Amazon S3 - Compatible Storage, Backblaze B2, Baidu Cloud, Box, Dropbox, Google Cloud Storage, Google Drive, hubiC, MegaDisk, Microsoft OneDrive, OpenStack Swift - Compatible Storage, Tencent COS, WebDAV Servers and Yandex Disk. |
| Universal Search | Enables Global Search of Applications and Files |
| ISCSI STORAGE AND VIRTUALISATION | |
| iSCSI Manager | Maximum iSCSI Targets: 128× |
| Maximum iSCSI LUNs: 256× | |
| iSCSI LUN Clone/Snapshot Support | |
| Virtual Machine Manager | Deploys and Runs Virtual Machines on the Synology NAS, Including Windows, Linux and Virtual DSM |
| DATA PROTECTION AND BACKUP SOLUTION | |
| Hyper Backup | Supports Local Backup, Network Backup and Data Backup to Public Clouds |
| Backup Tools | DSM Configuration Backup, macOS Time Machine Support, Synology Drive Client Desktop Application |
| Shared Folder Sync Supports a Maximum of 16× Tasks | |
| Snapshot Replication | Maximum Number of Snapshots for Shared Folders: 1,024× |
| Maximum Number of Replications: 32× | |
| Synology High Availability | Reduces Service Downtime by Combining Two Identical NAS into a High-Availability Cluster |
| Active Backup for G Suite | Supports Backup and Restoration of Google Workspace, My Drive, Team Drive, Gmail, Contacts and Calendar |
| Active Backup for Microsoft 365 |
Supports Backup and Restoration Of Microsoft 365 Onedrive for Business, Mail, Contacts And Calendar |
| Active Backup for Business | An All-in-One Backup Solution Designed for Heterogeneous Business IT Environments. It Enables IT Admins to Remotely Manage and Protect PCs, Servers and VMs from One Centralised Console. |
| PRODUCTIVITY AND COLLABORATION | |
| Collaboration Tools | Users Can Collaborate Through the Instant Messaging Service Synology Chat, The Online Editor Synology Office and the Scheduling Assistant Synology Calendar |
| Maximum Users for Chat: 1,500× | |
| Maximum Users for Office: 1,800× | |
| Calendar Supports CalDAV and Access via Mobile Devices | |
| Note Station | A Note Taking Platform that Supports Rich Text, Note Organisation and Versioning, Encryption, Sharing, Media Embedding and Attachments |
| Synology MailPlus Server | A Secure, Reliable and Private Mail Solution Featuring High-Availability, Load Balancing, Security and Filtering |
| Synology MailPlus | An Intuitive Webmail Interface For Synology MailPlus Server with Customisable Mail Labels, Filters and User Interface |
| MULTIMEDIA | |
| Moments | A Feature-Rich Photo Management Application that Includes AI-Powered Album Creation from Facial and Subject Recognition, Photo Editing and Sharing Capabilities, Similar Photo Detection for Duplicate Management, Auto-Editing Functions Such as Colour Correction And Angle Adjustments and Auto-Selection of the Best Shots. Mobile Applications are Available on iOS and Android Devices. |
| Other Packages | Video Station, Photo Station, Audio Station, iTunes Server |
| SURVEILLANCE | |
| Surveillance Station | Maximum IP Cameras: 40×, for a Total of 1,200fps at 720p (H.264) |
| ALL-IN-ONE SERVERS | |
| Synology Directory Server | Provides a Flexible and Cost-Effective Domain Controller Solution |
| Central Management System | Provides a Single Interface to Manage and Monitor Multiple Synology NAS |
| VPN Server | Maximum Connections: 30× |
| Supported VPN Protocols: PPTP, OpenVPN, L2TP/IPSec | |
| Mail Server | Supported Mail Server Protocols: POP3, SMTP, IMAP |
| LDAP/AD Account Support | |
| Mail Station | A Webmail Interface for Mail Server to Receive Emails from Multiple POP3 Mailboxes and SMTP Servers |
| Web Station | Enables Hosting for up to 30× Websites with Support or PHP/MariaDB and 3rd-Party Applications |
| Other Packages | DNS Server, RADIUS Server, Log Centre |
| OTHERS | |
| Storage Analyser | Displays Volume and Quota Usage, Total Size of Files, Volume Usage and Trends Based on Past Usage, Size of Shared Folders, Large Files, Most Recently Modified Files and Least Recently Accessed Files |
| Antivirus Essential | Provides Full System Scans, Scheduled Scans, White List Customisation and Auto-Update of Virus Definitions |
| iOS/Android Applications | Synology Drive, Synology MailPlus, Synology Chat, Synology LiveCam, Moments, DS audio, DS photo, DS video, DS cam, DS file, DS finder, DS note |
| Other Packages | Additional 3rd-Party Packages are Available in the Package Centre |
| ENVIRONMENT AND PACKAGING | |
| Environment Safety | RoHS Compliant |
| Package Contents | 1× RS2821RP+ Main Unit |
| 1× Quick Installation Guide | |
| 1× Accessory Pack | |
| 2× AC Power Cords | |
| Optional Accessories | DDR4 ECC UDIMM: D4EU01-4G/D4EC-2666-8G/D4EC-2666-16G |
| RKS1317 Rail Kit | |
| 10GbE Network Interface Cards: E10G21-F2/E10G18-T2/E10G18-T1 | |
| 25GbE Network Interface Card: E25G21-F2 | |
| M.2 SSD and 10GbE Combo Adapter Card: E10M20-T1 | |
| M.2 SSD Adapter Card: M2D20 | |
| M.2 NVMe SSD: SNV3400, SNV35009 | |
| 2.5" SATA SSD: SAT5200 | |
| 3.5" SATA HDD: HAT5300 | |
| Expansion Unit: RX1217(RP) | |
| VisualStation Units: VS960HD, VS360HD | |
| MailPlus License Pack | |
| Surveillance Device License Pack | |
| Virtual DSM License Pack | |
Additional information
| Weight | 22.29 kg |
|---|---|
| Dimensions | 76.5 × 57.4 × 25 cm |




