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Black 8-bay rackmount NAS chassis with redundant power supplies

Synology Inc.

Synology RS1221RP+ 8-Bay Rackmount NAS (Diskless)

SKU CH-6ER6-G4QQ3

Eight-bay rackmount NAS with AMD Ryzen V1500B quad-core 2.2 GHz CPU, 4 GB DDR4 expandable to 32 GB, four Gigabit RJ-45 ports, two USB 3.2 Gen 1 ports, one eSATA port, one PCIe 3.0 x8 slot.

  • 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 x 8 slot Supports network interface card
  • Form Factor8-Bay
  • Quad-core 2.2 GHz Ryzen CPU powers multi-user workloads
  • Redundant power supplies reduce downtime risk in rack deployments
  • Expandable DDR4 memory up to 32 GB for growing demands
  • Four 1 GbE ports plus PCIe 3.0 slot enable 10 GbE upgrades
  • Short 298 mm depth fits shallow racks and 2-post cabinets

8-Bay Rackmount NAS for Multi-User Workloads

The Synology RS1221RP+ is an 8-bay rackmount NAS built around an AMD Ryzen V1500B quad-core 2.2 GHz processor with 4GB DDR4 ECC memory expandable to 32GB. It targets businesses and tech-savvy users who need high-throughput file storage, virtualization support, or backup consolidation in a compact 2U form factor. Redundant power supplies and Synology High Availability clustering provide minute-level failover for critical uptime requirements.

Tool-Less Drive Installation with PCIe Expansion

Eight front-loading drive trays support tool-less installation of 3.5" SATA HDDs, 2.5" SATA HDDs, and 2.5" SATA SSDs. A single PCIe 3.0 x8 slot accepts 10GbE network cards or M.2 NVMe SSD adapter cards for read/write caching. Common issues include forgetting to enable SHR or RAID before writing data, and inserting drives while the unit is powered on instead of using hot-swap correctly.

Verify Rack Depth and Network Infrastructure

Confirm your rack or cabinet provides at least 399 mm usable depth for the RP+ model with redundant PSUs. Ensure your switch and cabling support link aggregation across the four onboard 1GbE RJ-45 ports or plan for a 10GbE add-in card. Check that your environment stays within 0°C to 35°C operating temperature and 5% to 95% relative humidity. Memory upgrades require DDR4 ECC UDIMM modules.

Highlights

  • Quad-core 2.2 GHz Ryzen CPU powers multi-user workloads
  • Redundant power supplies reduce downtime risk in rack deployments
  • Expandable DDR4 memory up to 32 GB for growing demands
  • Four 1 GbE ports plus PCIe 3.0 slot enable 10 GbE upgrades
  • Short 298 mm depth fits shallow racks and 2-post cabinets

Specifications

BrandSynology
ModelRS1221RP+
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 x 8 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
Included HDD CapacityDiskless System
Drive Compatibility3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
RAIDRAID 0, 1, 5, 6, 10, JBOD, Basic, Synology Hybrid RAID (SHR)
Supported ProtocolsSMB,AFP,NFS,FTP,WebDAV,Rsync
LEDsPower Indicator
Status Indicator
Alert Indicator
Drive Status Indicators
Power100 V to 240 V AC, 50/60 Hz, single phase
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
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
Dimensions16.1” x 19” x 3.5”
Weight18.52 lbs.
Package Contents1 x RS1221+/RS1221RP+ main unit
1 x Quick Installation Guide
1 x Accessory pack
2 x AC power cords (RS1221RP+)

Questions about this item

How can I verify the RS1221RP+ is performing at up to 2,315 MB/s read and 1,147 MB/s write after setup?

Run DSM benchmark tools or file transfers over the four 1 GbE ports; the status and drive LEDs will show normal activity while the Power and Alert indicators stay solid green.

The unit is diskless — which drives and memory must I buy separately?

Add eight 3.5" or 2.5" SATA HDDs or SSDs; install up to 32 GB of DDR4 ECC UDIMM modules in the two memory slots.

Which RS1221RP+ configuration should I choose — the standard 4 GB model or a memory upgrade?

Start with the included 4 GB DDR4 for typical file services; upgrade to 32 GB if you run virtual machines, Docker containers, or SSD cache on the PCIe 3.0 x8 slot.

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