Synology RackStation RS2421RP+ SAN/NAS Storage System

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Synology RackStation RS2421RP+ SAN/NAS Storage System - 1 x AMD Ryzen V1500B Quad-core (4 Core) 2.20 GHz - 12 x HDD Supported - 0 x HDD Installed - 12 x SSD Supported - 0 x SSD Installed - 4 GB RAM DDR4 SDRAM - RAID Supported 0, 1, 5, 6, 10, Hot Spare, Basic, Hybrid RAID, JBOD - 12 x Total Bays - 12 x 2.5"/3.5" Bay - 1 x Total Slot(s) - Gigabit Ethernet - 2 USB Port(s) - Network (RJ-45) - DiskStation Manager - SMB, AFP, NFS, FTP, WEBDAV, SMB 1.0, CIFS, SMB 2.0, SMB 3.0, NFSv3, NFSv4, ... - DISKLESS

Secure storage for your business

Synology RS2421+/RS2421RP+ are versatile 2U 12-bay storage servers designed to accommodate a diverse set of business environments. Scalable up to 24 drives, they are designed for cost-effective file management and sharing and include powerful backup capabilities designed for businesses with a growing data footprint. The unit delivers 2,200 MB/s 64K sequential read and 1154 MB/s sequential write performance, and can be optionally enhanced with SSD cache and 10/25Gb Ethernet.

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AMD Ryzen V1500B quad-core 2.2 GHz


2,200 MB/s seq. read and 1154 MB/s seq. write performance


4 GB ECC DDR4, up to 32 GB


Up to 24 drive bays with RX1217(RP)

High performance storage for anything

Over 106K/59K random read/write IOPS and up to 2,200/1,154 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 brings higher system reliability, while the Btrfs file system helps prevent data corruption, supports snapshot technology, and simplifies data protection.

Customize to suit

Easily adapt RS2421+/RS2421RP 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 maximum network throughput 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 SSD Cache

  • Storage expansion

    Expand to 24 drive bays with a RX1217(RP) expansion unit

License-free backup solutions | Back up your NAS to other devices

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.


Country of Origin Taiwan
Operating System DiskStation Manager
RAID Levels 0, 1, 5, 6, 10, Hot Spare, Basic, Hybrid RAID, JBOD
RAID Supported Yes
Standard Memory 4 GB
Memory Technology DDR4 SDRAM
Network & Communication
Ethernet Technology Gigabit Ethernet
Gigabit Ethernet
Power Description
Number of Power Supplies Installed 2
Redundant Power Supply Yes
Maximum Power Supply Wattage 300 W
I/O Expansions
Expansion Slot Type PCI Express 3.0 x8
Number of Total Expansion Bays 12
Number of Total Expansion Slots 1
Number of 2.5"/3.5" Bays 12
Number of Network (RJ-45) Ports 4
Network (RJ-45) Yes
Total Number of USB Ports 2
Number of USB 3.2 Gen 1 Ports 2
Number of Hard Drives Supported 12
Number of Hard Drives Installed 0
Number of Solid State Drive Supported 12
Number of Solid State Drive Installed 0
Physical Characteristics
Weight (Approximate) 26.24 lb
Form Factor Rack-mountable
Rack Height 2U
Height 3.5"
Width 19"
Depth 22.8"
Processor & Chipset
Processor Speed 2.20 GHz
Processor Type Ryzen
Processor Model V1500B
Processor Core Quad-core (4 Core)
Processor Manufacturer AMD
Number of Processors Installed 1


Product Type SAN/NAS Storage System
Manufacturer Part Number RS2421RP+
Manufacturer Website Address
Packaged Quantity 1
Manufacturer Synology, Inc
Product Model RS2421RP+
Product Name RackStation RS2421RP+ SAN/NAS Storage System
Product Line RackStation
Product Series +
Brand Name Synology
Management & Protocols
Protocols LDAP
SMB 3.0
SMB 2.0
SMB 1.0