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 performance1, and can be upgraded with SSD cache and 10/25Gb Ethernet2 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. Learn more
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.2
10/25GbE ready Support for 10/25GbE NICs lets you boost server throughput up to five times using Link Aggregation (bonding).
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 deduplication4, and restore data flexibly with multi-versioning. Learn more
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.
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. More information: Performance | Type | NAS | | Device class | Large Enterprise Business | | Backup function | Yes | | Noise level | 53.5 dB | | Snapshot | Yes | | Web-based management | Yes | | Access Control List (ACL) | Yes | | Reset button | Yes | | On/off switch | Yes | | System log | Yes | Technical details | Sustainability certificates | RoHS | | Compliance certificates | RoHS | Design | Chassis type | Rack (3U) | | Cooling type | Active | | Product colour | Black | | Number of fans | 3 fan(s) | | Fan diameter | 80 mm | Processor | Processor family | AMD Ryzen | | Processor manufacturer | AMD | | Processor model | V1500B | | Processor frequency | 2.2 GHz | | Processor cores | 4 | | Number of processors supported | 1 | Software | Operating system installed | DiskStation Manager | Memory | Internal memory | 4 GB | | Internal memory type | DDR4 | | Maximum RAM supported | 32 GB | | Memory slots | 2 | | Memory form factor | UDIMM | | Flash memory | 4000 MB | Power | Power supply location | Built-in | | Power supply unit (PSU) capacity | 550 W | | Number of power supply units | 1 | | 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 | 1000 Mbit/s | | Wake-on-LAN ready | Yes | | Supported network protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV | Weight & dimensions | Width | 482 mm | | Depth | 656.5 mm | | Height | 132.3 mm | | Weight | 17100 g | 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 | Total installed storage capacity | 192 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 | 12000 GB | | RAID support | Yes | | Supported storage drive interfaces | Serial ATA, Serial ATA II, Serial ATA III | | Storage drive sizes supported | 2.5,3.5 " | | Maximum supported storage capacity | 108 TB | | RAID levels | 0, 1, 5, 6, 10, JBOD | | Online RAID migration | Yes | | Online RAID expansion | Yes | | Hot-swap drive bays | Yes | Operational conditions | Operating temperature (T-T) | 0 - 35 °C | | Operating relative humidity (H-H) | 5 - 95 % | | Storage temperature (T-T) | -20 - 60 °C | Packaging content | Cables included | AC | | Power cables quantity | 2 |
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