We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver 2U rackmount chassis with twelve front drive bays and redundant power supply

Synology Inc.

Synology RS2421RP+ 12-bay 2U rackmount NAS AMD Ryzen V1500B 4 GB DDR4

SKU CH-Z9KG-ZCE2Z

A 2U rackmount NAS with twelve SATA bays, AMD Ryzen V1500B processor, 4 GB DDR4 memory, four Gigabit RJ-45 ports, two USB 3.2 Gen 1 ports and one PCIe 3.0 x8 slot

  • CPUAMD Ryzen V1500B quad-core 2.2 GHz
  • Form factor2U
  • LAN ports4 × 10/100/1000M
  • USB ports2 x USB 3.2 Gen 1
  • Drive interface12 x SATA (12 x Bay)
  • Pcie1 x PCI Express 3.0 x8
  • 12 drive bays for high-capacity storage in a 2U rackmount
  • AMD Ryzen V1500B quad-core 2.2 GHz processor for responsive file services
  • Four 10/100/1000M RJ-45 ports for flexible network connectivity
  • PCIe 3.0 x8 slot enables 10/25GbE or SSD cache expansion
  • Redundant power supply protects uptime for business workloads

12-bay 2U rackmount NAS

The Synology RS2421RP+ is a 12-bay 2U rackmount NAS powered by an AMD Ryzen V1500B quad-core 2.2 GHz processor with 4 GB DDR4 memory expandable to 32 GB. It provides high read/write performance with RAID for small business and remote office file management, sharing and backup. Redundant power supplies are included. Drives are not included.

Installation and common issues

Mount the 2U chassis in a standard rack and populate up to twelve 3.5" or 2.5" SATA drives in the hot-swap bays. The single PCI Express 3.0 x8 slot accepts compatible expansion cards for SSD cache or faster networking. Only Synology SAT5200 2.5" or SNV3400/3500 M.2 SSDs sold separately can be used for SSD cache; other M.2 drives will not function in that role.

Pre-order checklist

Verify rack depth and clearance for the 22.76" x 18.98" x 3.46" chassis and 26.24 lbs weight. Confirm the operating environment stays within 0°C to 35°C and 5% to 95% RH. Ensure network infrastructure supports the four 10/100/1000M RJ-45 ports and plan for any 10/25GbE upgrade via the PCIe slot. Check that required drives are on the Synology compatibility list.

How it compares

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

Price $1,316.99
Cheaper than about 95% of the 763 comparable items (median $6,564.99).

New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSynology
Model nameRS2421RP+
Recommended useHigh read/write performance with RAID
Processor
CPUAMD Ryzen V1500B quad-core 2.2 GHz
Memory
Installed RAM4 GB DDR4 / 32 GB Max
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 details100 V to 240 V AC, 50/60 Hz, single phase
Size & build
Form factor2U
Product dimensions22.76 in × 18.98 in × 3.46 in
Product weight26.24 lb (11.9 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 RS2421RP+ main unit
1 x Quick Installation Guide
1 x Accessory pack
RS2421RP+: 2 x AC power cords
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
Indicator lightsPower Button & Indicator
Status Indicator
Alert Indicator
Drive Status Indicators
PSU Indicators

Questions about this item

How can I confirm the RS2421RP+ is operating correctly after rack installation?

Watch the front-panel LEDs: the power indicator should stay solid, the status light should turn green after boot, and all twelve drive-status LEDs should show steady or blinking green once drives are seated and volumes are mounted.

What ships with the RS2421RP+ and which drives or cache SSDs must I purchase separately?

The box contains the 2U chassis with redundant power supplies, four RJ-45 ports, two USB 3.2 Gen 1 ports, one PCIe 3.0 x8 slot and 4 GB DDR4 installed; you must supply twelve 3.5″ or 2.5″ SATA drives, and only Synology SAT5200 2.5″ SSDs or SNV3400/3500 M.2 SSDs are validated for SSD cache.

Which memory configuration should I choose for the RS2421RP+ given the 4 GB base and 32 GB maximum?

Start with the factory 4 GB DDR4 module; add matched DDR4 DIMMs up to 32 GB total if you run virtual machines, many Docker containers or heavy multi-user file workloads.

More in Rack-Mounted NAS Servers

Similar items