Versatile and scalable storage
Synology RS2821RP+ is a 3U 16-bay storage server designed to accommodate a diverse set of business requirements. Scalable to 28 drives, the unit provides powerful backup and restoration functionality for the SMB sector. It delivers 2,200 MB/s sequential read and 105K 4K random read performance, and can be upgraded with SSD cache and 10/25Gb Ethernet options.
High performance storage for anything
Over 105K/59K random read/write IOPS and up to 2,220/1,164 MB/s sequential read/write throughput ensure ample performance for demanding workloads.
Built for reliability
Redundant power
Reduce the possibility of power disruptions on a single distribution channel or PDU adversely impacting data and service availability.
Near-zero downtime
Pair two identical devices with Synology High Availability and enable automatic minute-level failover between both devices in the event one server fails.
Data integrity and protection
ECC memory prevents data corruption, while the Btrfs file system brings higher reliability, snapshot technology, and simplified data protection.
Customize to suit
Easily adapt the RS2821RP+ to any business environment by adding faster networking, local SSD cache, or storage capacity.
10/25GbE ready
Support for 10/25GbE NICs lets you boost server throughput up to five times using Link Aggregation (bonding).
SSD cache
Boost read/write IOPS over HDD-only arrays by up to 16 times or more with NVMe or SATA
On-demand drive bays
Expand to 28 drive bays with one RX1217(RP) expansion unit
License-free backup solutions
Hyper Backup
Back up files, iSCSI LUNs, installed applications, and system configurations to destinations including Synology C2 Storage, public cloud platforms, USB devices, file servers, local folders, or other Synology NAS.
Set and forget backup tasks with regular schedules, enhance security with fine-grained user permissions and encryption, keep backup sizes small with built-in deduplication, and restore data flexibly with multi-versioning.
Snapshot Replication
Snapshot Replication enables flexible point-in-time snapshots of shared folders, and virtual machines with an RPO as low as 5 minutes and recovery within seconds.
Active Backup Suite
Securely back up Windows clients and servers, Microsoft 365 and Google Workspace accounts, file servers, and VMware and Hyper-V virtual machines with the Active Backup Suite.
Leverage built-in deduplication technology to reduce backup sizes and multi-versioning to allow flexible restoration.
Serving remote workforces
Keep your remote workforce connected with powerful out-of-the-box solutions for collaboration, file sharing, and communication.
Synology Drive
Host your own private cloud behind the safety of your NAS with 100% data ownership and no subscription fees.
Synology Office
Create documents, spreadsheets, and slides in a multi-user environment. Real-time collaboration and automatic saving make remote work sessions a breeze.
Synology Chat
Chat and collaborate with colleagues using secure end-to-end encryption on with mobile, desktop, and browser clients.
Storage for virtualization
DSM streamlines provisioning for and management of virtual machines with full certification for VMware® vSphere™, Microsoft® Hyper-V®, Citrix® XenServer™, and OpenStack virtualization environments.
Synology Storage Console for VMware or Windows platforms lets you manage storage directly from your hypervisor. VMware VAAI integration and Windows ODX help offload storage operations and speed up data transfer.
Works best with Synology drives
Engineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance.
Powered by Synology DiskStation Manager
The web-based DiskStation Manager (DSM) operating system supports a host of native productivity and management solutions.
Central Management System
Conveniently manage your fleet of Synology NAS from a centralized console.
Synology Drive
Instantly access your NAS files across multiple devices whenever you want, wherever you are.
Collaboration Suite
Satisfy all team collaboration needs behind the safety of your own private cloud with Synology Office, Calendar, and Chat.
Virtual Machine Manager
Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines.
Security
Shield your Synology NAS from the most sophisticated threats with industry-leading security solutions.
Surveillance
Protect your home or business with intelligent monitoring and video management tools. More information: Performance | Type | NAS |  | Device class | Small & Medium Business | | Backup function | Yes | | Backup features | Cloud, iSCSI LUN | | Buzzer | Yes | | Multilingual support | Yes | | Number of users | 2048 user(s) | | Noise level | 53.5 dB | | Third-party support | Yes | | Snapshot | Yes | | Share folder access right management | Yes | | Security algorithms | HTTPS, SSH, SSL/TLS | | Access Control List (ACL) | Yes | | Reset button | Yes | | On/off switch | Yes | | Built-in iTunes server | Yes | | Built-in FTP server | Yes | | Browser supported | Chrome, Firefox, Edge, Internet Explorer, Safari | | System log | Yes | | Share folder | CIFS/AFP/NFS/FTP/WebDAV | Technical details | Sustainability compliance | Yes | | Sustainability certificates | BSMI, CCC, CE, EAC, Federal Communications Commission (FCC), KC, RoHS, UL ECOLOGO | Design | Chassis type | Rack (3U) | | Cooling type | Active | | Product colour | Black | | Number of fans | 3 fan(s) | | Fan diameter | 80 mm | | LED indicators | Alarm, HDD, Power, Status | Processor | Processor family | Ryzen Embedded | | Processor manufacturer | AMD | | Processor model | V1500B | | Processor frequency | 2.2 GHz | | Processor cores | 4 | Software | Operating system installed | DiskStation Manager | | Windows operating systems supported | Yes | | Mac operating systems supported | Yes | Memory | Internal memory | 4 GB | | Internal memory type | DDR4 | | Maximum RAM supported | 32 GB | | Memory slots | 2 | | Memory form factor | UDIMM | | ECC | Yes | Power | Power supply location | Built-in | | Power supply unit (PSU) capacity | 550 W | | Redundant power supply (RPS) support | Yes | | Power consumption (typical) | 97.54 W | | Power consumption (HDD standby) | 49.57 W | | AC input voltage | 100 - 240 V | | AC input frequency | 50 - 60 Hz | Network | Ethernet LAN | Yes | | Ethernet LAN data rates | 10,100,1000 Mbit/s | | iSCSI support | Yes | | Wake-on-LAN ready | Yes | | Supported network protocols | SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN | | Link aggregation | Yes | Weight & dimensions | Width | 482 mm | | Depth | 656.5 mm | | Height | 132.3 mm | Ports & interfaces | Ethernet LAN (RJ-45) ports | 4 | | USB port | Yes | | USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 | | PCI Express x8 (Gen 3.x) slots | 1 | Storage | Storage drives installed | Yes | | Total installed storage capacity | 64 TB | | Number of storage drives installed | 16 | | Number of storage drives supported | 16 | | Installed storage drive type | HDD | | Supported storage drive types | HDD & SSD | | Storage drive capacity | 4000 GB | | Storage drive interface | Serial ATA III | | RAID support | Yes | | Supported storage drive interfaces | Serial ATA II, Serial ATA III | | Storage drive sizes supported | 2.5,3.5 " | | RAID levels | 0, 1, 5, 6, 10, JBOD | | Online RAID migration | Yes | | Online RAID expansion | Yes | | Hot-swap drive bays | Yes | | Supported file systems | BTRFS, Fat, HFS+, NTFS, exFAT, ext3, ext4 | Operational conditions | Operating temperature (T-T) | 0 - 35 °C | | Operating relative humidity (H-H) | 5 - 95 % | | Storage temperature (T-T) | -20 - 60 °C | | Storage relative humidity (H-H) | 5 - 95 % | | Operating altitude | 0 - 5000 m | Packaging content | Cables included | AC | | Power cables quantity | 2 |
|