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.
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 deduplication6, and restore data flexibly with multi-versioning.
Snapshot Replication
Snapshot Replication enables flexible point-in-time snapshots of shared folders and virtual machines with an RPO as low as 5 minutes and recovery within seconds.
Hardware Specs.
| CPU | CPU Model | AMD Ryzen V1500B |
| CPU Quantity | 1 |
| CPU Architecture | 64-bit |
| CPU Frequency | 4-core 2.2 GHz |
| Hardware Encryption Engine (AES-NI) | |
| Memory | System Memory | 4 GB DDR4 ECC UDIMM |
| Memory Module Pre-installed | 4 GB (4 GB x 1) |
| Total Memory Slots | 2 |
| Maximum Memory Capacity | 32 GB (16 GB x 2) |
| Notes | - Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
- Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
- For more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.
|
| Storage | Drive Bays | 12 |
| Maximum Drive Bays with Expansion Unit | 24 (RX1217/RX1217RP x 1) |
| Compatible Drive Type* (See all supported drives) | - 3.5" SATA HDD
- 2.5" SATA HDD
- 2.5" SATA SSD
|
| Hot Swappable Drive* | |
| Notes | - It is strongly recommended that you only install drives listed on your device's compatibility list. Storage pool and volume creation processes may fail when using unverified drives. Synology is unable to provide technical support for devices using unsupported components.
- "Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
|
| External Ports | RJ-45 1GbE LAN Port | 4 (with Link Aggregation / Failover support) |
| USB 3.2 Gen 1 Port* | 2 |
| Expansion Port | 1 |
| Notes | The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019. |
| PCIe | PCIe Expansion | 1 x Gen3 x8 slot (x4 link) |
| File System | Internal Drives | |
| External Drives | - Btrfs
- EXT4
- EXT3
- FAT
- NTFS
- HFS+
- exFAT
|
| Notes | exFAT Access can be installed for free from Package Center in DSM 7.0. In DSM 6.2 or earlier versions, exFAT Access needs to be purchased in Package Center. |
| Appearance | Form Factor (RU) | 2U |
| Size (Height x Width x Depth) | RS2421+ :88 mm x 482 mm x 552 mmRS2421RP+ :88 mm x 482 mm x 578 mm |
| Weight | RS2421+ :11.5 kgRS2421RP+ :11.9 kg |
| Rack Installation Support* | 4-post 19" rack (Synology Rail Kit - RKS-02) |
| Notes | The rail kit is sold separately |
| Others | System Fan | 60 mm x 60 mm x 3 pcs |
| Fan Speed Mode | - Full-Speed Mode
- Cool Mode
- Quiet Mode
|
| Easy Replacement System Fan | |
| Power Recovery | |
| Noise Level* | RS2421+ :50.1 dB(A)RS2421RP+ :54 dB(A) |
| Scheduled Power On / Off | |
| Wake on LAN / WAN | |
| Power Supply Unit / Adapter | RS2421+ :500 WRS2421RP+ :350 W |
| Redundant Power Supply | RS2421+ :-RS2421RP+ : |
| AC Input Power Voltage | 100V to 240V AC |
| Power Frequency | 50/60 Hz, Single Phase |
| Power Consumption | RS2421+ :79.56 W (Access) 34.89 W (HDD Hibernation)
RS2421RP+ :91.76 W (Access) 48.21 W (HDD Hibernation) |
| British Thermal Unit | RS2421+ :271.65 BTU/hr (Access) 119.13 BTU/hr (HDD Hibernation)
RS2421RP+ :313.31 BTU/hr (Access) 164.61 BTU/hr (HDD Hibernation) |
| Notes | - Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
- Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
|
| Temperature | Operating Temperature | 0°C to 35°C (32°F to 95°F) |
| Storage Temperature | -20°C to 60°C (-5°F to 140°F) |
| Relative Humidity | 5% to 95% RH |
| Certification | - FCC
- CE
- BSMI
- EAC
- CCC
- KC
- UL
- VCCI
- RCM
|
| Warranty | 3-year hardware warranty, extendable to 5 years with Extended Warranty Plus |
| Notes | - Availability varies by region. Before purchasing, please visit the official web pages of EW201/202 and Extended Warranty Plus for a list of eligible regions.
- The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
|
| Environment | RoHS Compliant |
| Packaging Content | RS2421+ : - Main Unit X 1
- Accessory Pack X 1
- AC Power Cord X 1
- Quick Installation Guide X 1
RS2421RP+ : - Main Unit X 1
- Accessory Pack X 1
- AC Power Cord X 2
- Quick Installation Guide X 1
|
| Optional Accessories | |
