Hardware Specifications
CPU
CPU Model	Marvell Armada 370 88F6707
CPU Architecture	32-bit
CPU Frequency	800 MHz
Hardware Encryption Engine
Memory
System Memory	256 MB DDR3
Storage
Drive Bays	1
Compatible Drive Type* (See all supported drives)	3.5" SATA HDD 2.5" SATA HDD (with optional 2.5" Disk Holder) 2.5" SATA SSD (with optional 2.5" Disk Holder)
Maximum Internal Raw Capacity	12 TB (12 TB drive x 1) (Capacity may vary by RAID types)
Maximum Single Volume Size	16 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 2.0 Port	2
File System
Internal Drives	EXT4
External Drives	EXT4 EXT3 FAT NTFS HFS+* exFAT*
Notes	HFS+ is read only, max 2TB volume size. exFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth)	166 mm x 71 mm x 224 mm
Weight	0.71 kg
Others
System Fan	60 mm x 60 mm x 1 pcs
Fan Speed Mode	Cool Mode Quiet Mode Low-power Mode
Power Recovery
Noise Level*	18.1 dB(A)
Power Supply Unit / Adapter	36W
AC Input Power Voltage	100V to 240V AC
Power Frequency	50/60 Hz, Single Phase
Power Consumption*	10.52 W (Access)  4.97 W (HDD Hibernation)
British Thermal Unit	35.90 BTU/hr (Access)  16.96 BTU/hr (HDD Hibernation)
Environment Temperature
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 KC
Warranty	2 Years
Notes	Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s). Noise Level Testing Environment: Fully loaded with Seagate 1TB ST31000520AS hard drive(s) in idle; Two G.R.A.S. Type 40AE microphones, each set up at 1 meter away from the Synology NAS front and rear; Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
DSM Specifications ( See more )
Storage Management
Maximum Internal Volume Number	1
Maximum iSCSI Target Number	10
Maximum iSCSI LUN	10
Supported RAID Type	Basic
File Sharing Capacity
Maximum Local User Accounts	512
Maximum Local Groups	128
Maximum Shared Folder	256
Maximum Shared Folder Sync Tasks	2
Maximum Concurrent CIFS/AFP/FTP Connections	64
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Log Center
Syslog Events per Second	50
Add-on Packages (learn more about the complete add-on package list)
Cloud Station Server
Maximum Number of Concurrently Connected Devices	64
Maximum Number of Synced Files (ext4)	10,000 / single file reaction time 1990 ms
Notes	The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time. For more information on file processing capability, please refer to the reaction time for file processing. File reaction time refers to the preparation time required for other devices to start downloading a 10KByte file from a Synology NAS after the file has been added to the NAS. RAM expansion was not used during testing. Non-encrypted shared folders were used during the aforementioned testing.
Download Station
Maximum Concurrent Download Tasks	20
Drive
Maximum Number of Synced Files	10,000 / single file reaction time 2,099 ms
Maximum Number of Concurrent Connections for PC Clients	5
Notes	The EXT4 file system was used for the purpose of testing. The maximum number of concurrent connections refers to the maximum number of connections that could be maintained when the maximum number of synced files was reached. File reaction time refers to the preparation time required for other devices to start downloading a 10KByte file from a Synology NAS after the file has been added to the NAS. Non-encrypted shared folders were used during the aforementioned testing.
exFAT Access (optional)
Media Server
DLNA Compliance
Moments
Facial recognition
Subject recognition
Office
Maximum Users	3
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)	5 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)*	50 FPS @ 720p (1280x720)  20 FPS @ 1080p (1920×1080)  10 FPS @ 3M (2048x1536)  10 FPS @ 5M (2591x1944)
Total FPS (MJPEG)*	20 FPS @ 720p (1280x720)  10 FPS @ 1080p (1920×1080)  10 FPS @ 3M (2048x1536)  6 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 Welcome Note X 1 Accessory Pack X 1 AC Power Adapter X 1 RJ-45 LAN Cable X 1
Optional Accessories	Surveillance Device License Pack Disk Holder: Type C VS360HD VS960HD

Synology® DiskStation DS115j is a compact 1-bay NAS server specifically designed for home and personal users to effortlessly share storage across devices. Featuring a simple, sleek design and low power consumption, DS115j fits elegantly into your living room and study. Running on Synology DiskStation Manager, DS115j takes full advantage of the rich features Synology has to offer.

•24/7 Personal Cloud
•Hardware Encryption Engine
•Cool and Quiet Design
•Power-saving with only 12.1 Watts in Operation