CPU	CPU Model	Intel Atom C3538
	CPU Quantity	1
	CPU Architecture	64-bit
	CPU Frequency	4-core 2.1 GHz
	Hardware Encryption Engine (AES-NI)
Memory	System Memory	2 GB DDR4 non-ECC
	Total Memory Slots	1
	Maximum Memory Capacity	18 GB (2GB + 16 GB)
	Notes	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. 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.
Storage	Drive Bays	4
	Maximum Drive Bays with Expansion Unit	8 (RX418 x 1)
	Compatible Drive Type* (See all supported drives)	3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD
	Maximum Internal Raw Capacity	64 TB (16 TB drive x 4) (Capacity may vary by RAID types)
	Maximum Raw Capacity with Expansion Units	128 TB (64 TB + 16 TB drive x 4) (Capacity may vary by RAID types)
	Maximum Single Volume Size*	108 TB
	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. The maximum raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit. (Learn more) Each internal volume (may consist of multiple drives) is expandable up to 108TB.
External Ports	RJ-45 1GbE LAN Port	4 (with Link Aggregation / Failover support)
	USB 3.0 Port	2
	eSATA Port	1
PCIe	PCIe Expansion	1 x Gen3 x8 slot (black, x4 link)
File System	Internal Drives	Btrfs EXT4
	External Drives	Btrfs EXT4 EXT3 FAT NTFS HFS+ exFAT*
	Notes	exFAT Access is purchased separately in Package Center.
Appearance	Form Factor (RU)	1U
	Size (Height x Width x Depth)	44 mm x 480 mm x 492.6 mm 44 mm x 480 mm x 518.6 mm (for RP model)
	Weight	6.4 kg 7.96 kg (for RP model)
	Rack Installation Support*	4-post 19" rack (Synology Rail Kit - RKM114/RKS1317)
	Notes	The rail kit is sold separately
Others	System Fan	40 mm x 40 mm x 3 pcs 40 mm x 40 mm x 2 pcs (for RP model)
	Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode
	Power Recovery
	Noise Level*	27 dB(A) 39.9 dB(A) (for RP model)
	Scheduled Power On / Off
	Wake on LAN / WAN
	Power Supply Unit / Adapter	150 W
	Redundant Power Supply	yes (for RP model)
	AC Input Power Voltage	100 V to 240 V AC
	Power Frequency	50/60 Hz, Single Phase
	Power Consumption*	37.94 W (Access) 20.96 W (HDD Hibernation) 38.88 W (Access) (for RP model) 22.17 W (HDD Hibernation) (for RP model)
	British Thermal Unit	129.54 BTU/hr (Access) 71.57 BTU/hr (HDD Hibernation) 132.75 BTU/hr (Access) (for RP model) 75.70 BTU/hr (HDD Hibernation) (for RP model)
	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%