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Silver 2U rackmount chassis with twelve front drive bays and four rear network ports

Synology Inc.

Synology RS2421+ 12-Bay Rackmount NAS AMD Ryzen V1500B 2.2 GHz 4 GB DDR4

SKU CH-A0A9-9X1CQ

A 12-bay rackmount NAS with an AMD Ryzen V1500B quad-core 2.2 GHz processor, 4 GB DDR4, four gigabit ports and room for 216 TB of SATA storage

  • CPUAMD Ryzen V1500B quad-core 2.2 GHz
  • Form factor12-Bay
  • Power draw79.56 W (Access) 34.89 W (HDD Hibernation)
  • LAN ports4 × 10/100/1000M
  • USB ports2 x USB 3.2 Gen 1
  • Drive interface12 x SATA (12 x Bay)
  • 12 drive bays support up to 216 TB raw capacity
  • AMD Ryzen V1500B quad-core 2.2 GHz processor handles heavy workloads
  • 4 GB DDR4 memory expandable to 32 GB for demanding apps
  • Four Gigabit RJ-45 ports provide high-throughput network connectivity
  • PCI Express 3.0 x8 slot enables 10/25 GbE or SSD cache expansion

12-Bay Rackmount NAS for Small Business

The Synology RS2421+ is a 2U 12-bay rackmount NAS designed for small business and remote office deployments. It runs Synology DiskStation Manager and provides file management, sharing and backup services. The unit ships without drives so you can populate the bays with compatible 3.5" or 2.5" SATA HDDs or SSDs.

Suits Teams Needing Expandable File Storage

This system fits organisations that want a diskless platform with four 1GbE ports, two USB 3.2 Gen 1 ports and a PCIe 3.0 x8 slot for adding SSD cache or faster networking. Buyers who require drives included in the box or who need more than 32 GB of DDR4 memory should consider other options.

Quad-Core AMD Ryzen V1500B at 2.2 GHz

The processor delivers four cores at 2.2 GHz with 4 GB of DDR4 installed and a maximum of 32 GB across two slots. This CPU and memory combination determines whether the NAS can handle your workload's concurrent file operations and service demands.

How it compares

Measured against everything we stock in Rack-Mounted NAS Servers, at today’s prices. Recalculated every night.

Price $917.99
Cheaper than about 96% of the 763 comparable items (median $6,564.99).

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Specifications

Product
Brand nameSynology
Model nameRS2421+
Recommended useHigh read/write performance with RAID
Processor
CPUAMD Ryzen V1500B quad-core 2.2 GHz
Memory
Installed RAM4 GB DDR4 / 32 GB Max
Maximum RAM capacity32 GB
RAM slots2
Storage
Drive interface12 x SATA (12 x Bay)
Drives includedDiskless System
Supported RAID modesSynology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
Connectivity
Protocol supportSMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN, L2TP)
Ports & slots
LAN ports4 × 10/100/1000M
USB ports2 x USB 3.2 Gen 1
Power
Power draw79.56 W (Access)
34.89 W (HDD Hibernation)
Power details100 V to 240 V AC, 50/60 Hz, single phase
Size & build
Form factor12-Bay
Product dimensions3.46 in × 18.98 in × 21.73 in
Product weight25.35 lb (11.5 kg)
Compatibility
Compatible drives3.5 in or 2.5 in SATA HDD/SSD (drives not included)
Only Synology SAT5200 2.5 in or Synology SNV3400/3500 M.2 SSDs (sold reparately) can be used for SSD cache
In the box
In the box1 x RS2421+ main unit
1 x Quick Installation Guide
1 x Accessory pack
RS2421+: 1 x AC power cord
Environment & compliance
Temperature rangeOperating temperature: 0 °C to 35 °C (32 °F to 95 °F)
Storage temperature: -20 °C to 60 °C (-5 °F to 140 °F)
Humidity range5% to 95% RH
More details
Pcie1 x PCI Express 3.0 x8
Maximum capacity216 TB
Indicator lightsPower Button & Indicator
Status Indicator
Alert Indicator
Drive Status Indicators
PSU Indicators

Questions about this item

How much DDR4 memory can I add to the two slots later?

The RS2421+ supports up to 32 GB total DDR4 across its two memory slots.

Which interface will saturate first when all twelve SATA bays are under heavy RAID load?

The four 1 GbE RJ-45 ports are the first bottleneck under sustained multi-drive RAID traffic.

What are the typical power draw and heat figures when the unit runs 24/7 with drives active?

Expect about 79.56 W during drive access and 34.89 W when the disks are hibernating.

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