Synology DiskStation DS418j

Form Factor: Tower
CPU: Realtek RTD1293/64-bit/Dual Core 1.4 GHz
Memory: 1GB DDR4
Drive Bays: 4 (HDD not included )
Hot swappable Drive: No
External Ports: RJ-45 1GbE LAN X 1; USB 3.0 X 2
Maximum IP cam (License required): 16 (including 2 Free License)
Warranty: 2 years

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Hardware Specifications
CPU
CPU Model	Realtek RTD1293
CPU Architecture	64-bit
CPU Frequency	Dual Core 1.4 GHz
Hardware Encryption Engine
Memory
System Memory	1 GB DDR4
Storage
Drive Bays	4
Compatible Drive Type* (See all supported drives)	3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD
Maximum Internal Raw Capacity	40 TB (10 TB drive x 4) (Capacity may vary by RAID types)
Maximum Single Volume Size	108 TB
Notes	"Compatible drive type" indicates the 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 single volume size is not directly related to the maximum raw capacity. (Learn more)
External Ports
RJ-45 1GbE LAN Port	1
USB 3.0 Port	2
File System
Internal Drives	EXT4
External Drives	EXT4 EXT3 FAT NTFS HFS+ exFAT*
Notes	exFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth)	184 mm x 168 mm x 230 mm
Weight	2.21 kg
Others
System Fan	80 mm x 80 mm x 2 pcs
Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode Low-power Mode
Wireless Support (dongle)
Brightness adjustable front LED indicators
Power Recovery
Noise Level*	20.6 dB(A)
Scheduled Power On/Off
Wake on LAN/WAN
Power Supply Unit / Adapter	90W
AC Input Power Voltage	100V to 240V AC
Power Frequency	50/60 Hz, Single Phase
Power Consumption*	21.22 W (Access) 8.97 W (HDD Hibernation)
British Thermal Unit	72.41 BTU/hr (Access) 30.61 BTU/hr (HDD Hibernation)
Environment Temperature
Operating Temperature	5°C to 40°C (40°F to 104°F)
Storage Temperature	-20°C to 60°C (-5°F to 140°F)
Relative Humidity	5% to 95% RH
Certification	FCC Class B CE Class B BSMI Class B
Warranty	2 Years
Notes	Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
DSM Specifications ( See more )
Storage Management
Maximum Internal Volume Number	256
Maximum iSCSI Target Number	10
Maximum iSCSI LUN	10
Supported RAID Type	Synology Hybrid RAID Basic JBOD RAID 0 RAID 1 RAID 5 RAID 6 RAID 10
RAID Migration	Basic to RAID 1 Basic to RAID 5 RAID 1 to RAID 5 RAID 5 to RAID 6
Volume Expansion with Larger HDDs	Synology Hybrid RAID RAID 1 RAID 5 RAID 6
Volume Expansion by Adding a HDD	Synology Hybrid RAID RAID 5 JBOD
Global Hot Spare Supported RAID Type	Synology Hybrid RAID RAID 1 RAID 5
SSD Support
SSD TRIM
File Sharing Capacity
Maximum Local User Accounts	1024
Maximum Local Groups	256
Maximum Shared Folder	256
Maximum Shared Folder Sync Tasks	2
Maximum Concurrent CIFS/AFP/FTP Connections	100
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Log Center
Syslog Events per Second	100
Add-on Packages (learn more about the complete add-on package list)
Chat
Maximum Users	10
Notes	The number of concurrent HTTP connections for Chat was configured to the maximum. CPU and RAM usage were both under 80% when the number of maximum users was reached.
Cloud Station Server
Maximum Concurrent File Transfers	100
Download Station
Maximum Concurrent Download Tasks	30
exFAT Access (optional)
Media Server
DLNA Compliance
Office
Maximum Users	10
Maximum Simultaneous Editing Users	10
Notes	CPU and RAM usage were both under 80% when the number of maximum users was reached. For tested models with expandable memory, the maximum amount of RAM was installed. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Surveillance Station
Maximum IP cam (Licenses required)	16 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)*	480 FPS @ 720p (1280x720) 240 FPS @ 1080p (1920×1080) 150 FPS @ 3M (2048x1536) 100 FPS @ 5M (2591x1944)
Total FPS (MJPEG)*	224 FPS @ 720p (1280x720) 150 FPS @ 1080p (1920×1080) 100 FPS @ 3M (2048x1536) 60 FPS @ 5M (2591x1944)
Notes	Surveillance Station throughput is tested with Axis network camera, using continuous recording with live view from Surveillance Station and motion detection by camera. Live view and recording are sharing the same stream from the camera.
Video Station
Video Transcoding	Group 2 (See more)
VPN Server
Maximum Connections	5
Environment & Packaging
Environment	RoHS Compliant
Packaging Content	Main Unit X 1 Accessory Pack X 1 AC Power Adapter X 1 AC Power Cord X 1 RJ-45 LAN Cable X 1 Quick Installation Guide X 1
Optional Accessories	Surveillance Device License Pack VS360HD