CPU Model : Intel Xeon D-1521 

CPU Architecture : 64-bit 

CPU Frequency : Quad Core 2.4 (base) / 2.7 (turbo) GHz 

Hardware Encryption Engine (AES-NI) : Yes

System Memory : 8 GB DDR4 ECC UDIMM 

Memory Module Pre-installed : 8 GB (8 GB x 1) 

Total Memory Slots : 4 

Memory Expandable up to : 64 GB (16 GB x 4) 

Drive Bays : 12 

Maximum Drive Bays with Expansion Unit : 36 

Compatible Drive Type* (See all supported drives) :

3.5" SATA HDD

2.5" SATA HDD 

2.5" SATA SSD

Maximum Internal Raw Capacity : 192 TB (16 TB drive x 12) (Capacity may vary by RAID types) 

Maximum Raw Capacity with Expansion Units : 576 TB (192 TB + 16 TB drive x 24) (Capacity may vary by RAID types) 

Maximum Single Volume Size* : 200 TB (32 GB RAM required, for RAID 5 or RAID 6 groups only) 108 TB

RJ-45 1GbE LAN Port : 4 (with Link Aggregation / Failover support) 

USB 3.0 Port : 2 

Expansion Port : 2 

PCIe Expansion : 2 x Gen3 x8 slots (x8 link) 

Add-In-Card Support : PCIe Network Interface Card (Learn more) 

M2D18 - Dual M.2 SATA SSD adapter card for SSD cache

Internal Drives :

Btrfs

EXT4

Btrfs

EXT4

EXT3

FAT

NTFS

HFS+

exFAT*

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 - RKS1317) 

Notes : The rail kit is sold separately 

System Fan : 80 mm x 80 mm x 4 pcs 

Fan Speed Mode :

Full-Speed Mode

Cool Mode

Quiet Mode

Easy Replacement System Fan : Yes

Power Recovery : Yes

Noise Level* : 50.2 dB(A) 

Scheduled Power On / Off : Yes

Wake on LAN / WAN : Yes

Power Supply Unit / Adapter : 500 W 

AC Input Power Voltage : 100 V to 240 V AC 

Power Frequency : 50/60 Hz, Single Phase 

Power Consumption* :

142.76 W (Access) 

55.05 W (HDD Hibernation) 

487.12 BTU/hr (Access) 

187.84 BTU/hr (HDD Hibernation) 

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