CPU Model

Intel Xeon D-1521

CPU Quantity

1

CPU Architecture

64-bit

CPU Frequency

4-core 2.4 (base) / 2.7 (turbo) GHz

Hardware Encryption Engine (AES-NI)

✓

MEMORY

System Memory

8 GB DDR4 ECC UDIMM

Memory Module Pre-installed

8 GB (8 GB x 1)

Total Memory Slots

4

Maximum Memory Capacity

64 GB (16 GB x 4)

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.

STORAGE

Drive Bays

12

Maximum Drive Bays with Expansion Unit

36 (RX1217/RX1217RP x 2)

Compatible Drive Type*

3.5" SATA HDD

2.5" SATA HDD

2.5" SATA SSD

Hot Swappable Drive*

✓

Notes

"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.

RJ-45 1GbE LAN Port

4 (with Link Aggregation / Failover support)

USB 3.2 Gen 1 Port*

2

Expansion Port

2

Notes

The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.

EXTERNAL PORTS

PCIe   Expansion

2 x Gen3 x8 slots (x8 link)

Internal Drives

Btrfs

EXT4

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)

88 mm x 482 mm x 724 mm

Weight

14.5 kg

Rack Installation Support*

4-post 19" rack (Synology Rail Kit - RKS-02)

Notes

The rail kit is sold separately

OTHERS

System Fan

80 mm x 80 mm x 4 pcs

Fan Speed Mode

Full-Speed Mode

Cool Mode

Quiet Mode

Easy Replacement System Fan

✓

Power Recovery

✓

Noise Level*

50.2 dB(A)

Scheduled Power On / Off

✓

Wake on LAN / WAN

✓

Power Supply Unit / Adapter

500 W

AC Input Power Voltage

100V to 240V AC

Power Frequency

50/60 Hz, Single Phase

Power Consumption

142.76 W (Access)
55.05 W (HDD Hibernation)

British Thermal Unit

487.12 BTU/hr (Access)
  187.84 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%

Operating Temperature

5°C to 35°C (40°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

VCCI

RCM

Environment

RoHS Compliant

Packaging Content

Main Unit X 1

Accessory Pack X 1

AC Power Cord X 1

Quick Installation Guide X 1