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Silver rackmount NAS chassis with eight front drive bays and status LEDs

Synology Inc.

Synology Inc. RS1221+ 8-Bay Rackmount NAS 4GB DDR4 AMD Ryzen V1500B 2.2 GHz

SKU CH-3AN0-JCHWY MPN RS1221+

Eight-bay rackmount NAS with AMD Ryzen V1500B quad-core 2.2 GHz CPU, 4GB DDR4 ECC memory expandable to 32GB, four 1GbE ports, PCIe 3.0 x8 slot for 10GbE or NVMe cache, and 144TB maximum raw capacity

  • Port RJ-454 x 10/100/1000M
  • Port USB2 x USB3.2 Gen 1
  • Port eSATA1 x eSATA
  • HDD Interface8 x SATA (8 x Bay)
  • Port Others1 x PCIe 3.0 4-lane x8 slot Supports network interface cards
  • Form Factor8-Bay

Form Factor 8-Bays

Option RS1221+

  • Quad-core 2.2 GHz Ryzen CPU powers demanding workloads
  • 4 GB DDR4 ECC memory expandable to 32 GB
  • Eight SATA bays support up to 144 TB raw capacity
  • Four Gigabit RJ-45 ports plus PCIe 3.0 x8 slot for 10GbE upgrades
  • 30 cm depth fits shallow 2-post rack enclosures

Eight-bay rackmount NAS for growing data

The Synology RS1221+ is an eight-bay rackmount network-attached storage system built around an AMD Ryzen V1500B quad-core processor running at 2.2 GHz with 4 GB of DDR4 ECC memory. It targets small to medium businesses that need centralised file storage, backup and virtualization in a compact 2U form factor. The unit ships diskless and supports up to 144 TB of raw capacity using 3.5" or 2.5" SATA drives.

Slide-in trays and expansion slot simplify setup

Each of the eight drive bays uses a tool-less tray so drives can be added or replaced without opening the chassis. A single PCIe 3.0 x8 slot accepts a 10 GbE network card or an M.2 NVMe adapter for SSD cache, both of which install with a standard screw. The only common issue is forgetting to initialise the new volume in DSM before expecting the extra space to appear.

Sustained throughput stays consistent under load

Sequential read performance reaches 2,300 MB/s and 4K random read hits 100 K IOPS, figures that hold during long backup windows or continuous iSCSI workloads. Power draw settles at 49.89 W during access and drops to 22.64 W when drives hibernate, so thermal output remains predictable in shallow 30 cm racks. The fan profile ramps gradually rather than spiking, keeping acoustic levels steady over extended periods.

Highlights

  • Quad-core 2.2 GHz Ryzen CPU powers demanding workloads
  • 4 GB DDR4 ECC memory expandable to 32 GB
  • Eight SATA bays support up to 144 TB raw capacity
  • Four Gigabit RJ-45 ports plus PCIe 3.0 x8 slot for 10GbE upgrades
  • 30 cm depth fits shallow 2-post rack enclosures

Specifications

BrandSynology
ModelRS1221+
Port RJ-454 x 10/100/1000M
Port USB2 x USB3.2 Gen 1
Port eSATA1 x eSATA
HDD Interface8 x SATA (8 x Bay)
Port Others1 x PCIe 3.0 4-lane x8 slot
Supports network interface cards and M.2 NVMe SSD adapter cards for SSD cache
Form Factor8-Bay
ProcessorAMD Ryzen V1500B quad-core 2.2 GHz
Installed Memory4GB DDR4
Max Memory Capacity32GB
Memory Slot2
Included HDD CapacityDiskless System
Max Capacity144TB
Drive Compatibility3.5" or 2.5" SATA HDD/SSD
RAIDRAID 0, 1, 5, 6, 10, JBOD, Basic, Synology Hybrid RAID (SHR)
Supported ProtocolsSMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN, L2TP)
LEDsPower Indicator
Status Indicator
Alert Indicator
Drive Status Indicators
Power100 V to 240 V AC, 50/60 Hz, single phase
Power Consumption49.89 W (Access)
22.64 W (HDD Hibernation)
FeaturesHigh Performance
Tackle multi-user environments effortlessly with up to 2,315 MB/s read and 1,147 MB/s write performance
Compact Deployment
The RS1221+ and RS1221RP+ feature a short depth of just 298 mm and 399 mm respectively
10GbE Ready
Improve network performance by 5X with a PCIe SFP+ or RJ-45 network card
High Availability
Configure two units together to create a Synology High Availability (SHA) cluster for maximum service uptime and minute-level failover
UsageHigh read/write performance with RAID
TemperatureOperating temperature: 0°C to 35°C (32°F to 95°F)
Storage temperature: -20°C to 60°C (-5°F to 140°F)
Humidity5% to 95% RH
Dimensions3.46" x 18.98" x 12.07" (with server handles)
Weight15.21 lbs.
Package Contents1 x RS1221+ main unit
1 x Quick Installation Guide
1 x Accessory pack
1 x normal cable and 1 x C13 to C14 cable (RS1221+)
Shipping weight9.37 kg
Package size584 × 425 × 222 mm

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Questions about this item

How do I confirm the RS1221+ is operating correctly after initial setup?

Check that the power indicator shows solid green, the status indicator is steady and the alert indicator remains off; each installed drive should display a healthy status LED and DSM should report all volumes as normal.

What comes in the box with the diskless RS1221+ and what must be purchased separately?

The unit ships with the 8-bay chassis, AMD Ryzen V1500B processor, 4 GB DDR4 ECC memory installed, four 1 GbE RJ-45 ports, two USB 3.2 Gen 1 ports, one eSATA port and a PCIe 3.0 x8 slot; drives, expansion units and any 10 GbE or M.2 NVMe adapter cards are sold separately.

Which memory configuration should I choose for the RS1221+ given the installed 4 GB and 32 GB maximum?

The system includes 4 GB DDR4 ECC and supports up to 32 GB across two slots; add matched DDR4 ECC modules if you plan to run multiple virtual machines, Docker containers or heavy file-services workloads.

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