Synology DS218j

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  • Synology DS218j
  • Hardware Specifications
    CPU
    CPU Model Marvell Armada 385 88F6820
    CPU Architecture 32-bit
    CPU Frequency Dual Core 1.3 GHz
    Hardware Encryption Engine  
    Memory
    System Memory 512 MB DDR3
    Storage
    Drive Bays 2
    Compatible Drive Type
    • 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 24 TB (12 TB drive x 2) (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 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.
    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
    • HFS+ is read only, max 2TB volume size.
    • exFAT Access is purchased separately in Package Center.
    Appearance
    Size (Height x Width x Depth) 165 mm x 100 mm x 225.5 mm 
    Weight 0.88 kg 
    Others
    System Fan 92 mm x 92 mm x 1 pcs
    Fan Speed Mode
    • Full-Speed Mode
    • Cool Mode
    • Quiet Mode
    • Low-power Mode
    Brightness adjustable front LED indicators  
    Power Recovery  
    Noise Level* 18.2 dB(A) 
    Scheduled Power On/Off  
    Wake on LAN/WAN  
    Power Supply Unit / Adapter 60W 
    AC Input Power Voltage 100V to 240V AC
    Power Frequency 50/60 Hz, Single Phase
    Power Consumption* 17.48 W (Access) 
    7.03 W (HDD Hibernation) 
    British Thermal Unit 59.68 BTU/hr (Access) 
    24 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
    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 Migration Basic to RAID 1
    Volume Expansion with Larger HDDs
    • Synology Hybrid RAID
    • RAID 1
    Volume Expansion by Adding a HDD Synology Hybrid RAID
    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
    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 Number of Concurrently Connected Devices 100
    Maximum Number of Synced Files (ext4) 100,000 / single file reaction time 840 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 1KByte 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 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) 14 (including 2 Free License)
    Total FPS (H.264)* 420 FPS @ 720p (1280x720) 
    120 FPS @ 1080p (1920×1080) 
    90 FPS @ 3M (2048x1536) 
    60 FPS @ 5M (2591x1944) 
    20 FPS @ 4K (3840x2160)
    Total FPS (H.265)* 420 FPS @ 720p (1280x720) 
    210 FPS @ 1080p (1920×1080) 
    140 FPS @ 3M (2048x1536) 
    90 FPS @ 5M (2591x1944) 
    30 FPS @ 4K (3840x2160)
    Total FPS (MJPEG)* 140 FPS @ 720p (1280x720) 
    70 FPS @ 1080p (1920×1080) 
    40 FPS @ 3M (2048x1536) 
    20 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
    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
    • Disk Holder: Type C
    • VS360HD
    • VS960HD
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