|  | 
  
    | CPU | 
  
    | CPU Model | Intel Atom C3538 | 
  
    | CPU Architecture | 64-bit | 
  
    | CPU Frequency | Quad Core 2.1 GHz | 
  
    | Hardware Encryption Engine (AES-NI) |  | 
  
    | Memory | 
  
    | System Memory | 4 GB DDR4 | 
  
    | Memory Module Pre-installed | 4GB (1 x 4GB) | 
  
    | Total Memory Slots | 4 | 
  
    | Memory Expandable up to | 64 GB (16 GB x 4) | 
  
    | Storage | 
  
    | Drive Bays | 16 | 
  
    | Maximum Drive Bays with Expansion Unit | 28 | 
  
    | 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 (12 TB drive x 16) (Capacity may vary by RAID types) | 
  
    | Maximum Raw Capacity with Expansion Units | 336 TB (192 TB + 12 TB drive x 12) (Capacity may vary by RAID types) | 
  
    | Maximum Single Volume Size | 108 TB | 
  
    | Hot Swappable Drive |  | 
  
    | 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. 
        (Learn more)  | 
  
    | External Ports | 
  
    | RJ-45 1GbE LAN Port | 4 (with Link Aggregation / Failover support) | 
  
    | USB 3.0 Port | 2 | 
  
    | Expansion Port | 1 | 
  
    | PCIe | 
  
    | PCIe Expansion | 1 x Gen3 x8 slot (black, x4 link) | 
  
    | Add-in-card support | 
        M2D17 - Dual M.2 SSD adapter card for SSD cache 
        PCIe Network Interface Card (Learn more) 
   | 
  
    | Notes | RS2818RP+ with M2D17 can only support M.2 SATA SSD. M.2 NVMe/AHCI PCIe 
      SSD is not supported. | 
  
    | File System | 
  
    | Internal Drives |  | 
  
    | External Drives | 
        Btrfs 
        EXT4 
        EXT3 
        FAT 
        NTFS 
        HFS+ 
        exFAT* | 
  
    | Notes | exFAT Access is purchased separately in Package Center. | 
  
    | Appearance | 
  
    | Size (Height x Width x Depth) | 132.3 mm x 482 mm x 656.5 mm 
 | 
  
    | Weight | 17.4 kg 
 | 
  
    | Others | 
  
    | System Fan | 80 mm x 80 mm x 3 pcs | 
  
    | Fan Speed Mode | 
        Full-Speed Mode 
        Cool Mode 
        Quiet Mode | 
  
    | Easy Replacement System Fan |  | 
  
    | Power Recovery |  | 
  
    | Noise Level* | 51.0 dB(A) 
 | 
  
    | Scheduled Power On/Off |  | 
  
    | Wake on LAN/WAN |  | 
  
    | Power Supply Unit / Adapter | 2 X 500W 
 | 
  
    | AC Input Power Voltage | 100V to 240V AC | 
  
    | Power Frequency | 50/60 Hz, Single Phase | 
  
    | Power Consumption* | 138.1 W (Access, for RP model) 66.7 W (HDD Hibernation, for RP 
      model)
 
 | 
  
    | British Thermal Unit | 471.5 BTU/hr (Access, for RP model) 227.7 BTU/hr (HDD Hibernation, 
      for RP model)
 
 | 
  
    | Redundant Power Supply (for xs+ and RP model) |  | 
  
    | Environment Temperature | 
  
    | Operating Temperature | 5C to 35C (40F to 95F) | 
  
    | Storage Temperature | -20C to 60C (-5F to 140F) | 
  
    | Relative Humidity | 5% to 95% RH | 
  
    | Certification | 
        EAC 
        VCCI 
        CCC 
        RCM 
        FCC 
        CE 
        BSMI | 
  
    | Warranty | 3 Year Hardware Warranty, Extendable to 5 Year Coverage - 
      EW202 | 
  
    | Notes | 
        Power consumption is measured when fully loaded with Western Digital 
        1TB WD10EFRX hard drive(s). 
        Support for Wake on WAN needs switch and routers which recognize 
        Magic Packet. 
        Noise Level Testing Environment: Fully loaded with Seagate 2TB 
        ST2000VN000 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: 24.25-25.75C; 
        Humidity: 58.2-61.8% | 
  
    | DSM Specifications ( See more ) | 
  
    | Storage Management | 
  
    | Maximum Internal Volume Number | 512 | 
  
    | Maximum iSCSI Target Number | 32 | 
  
    | Maximum iSCSI LUN | 256 | 
  
    | iSCSI LUN Clone/Snapshot, Windows ODX |  | 
  
    | SSD Read/Write Cache (White Paper) |  | 
  
    | SSD TRIM |  | 
  
    | RAID Group |  | 
  
    | 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 
        RAID 6 
        JBOD | 
  
    | Global Hot Spare Supported RAID Type | 
        Synology Hybrid RAID 
        RAID 1 
        RAID 5 
        RAID 6 
        RAID 10 | 
  
    | File Sharing Capacity | 
  
    | Maximum Local User Accounts | 2048 | 
  
    | Maximum Local Groups | 256 | 
  
    | Maximum Shared Folder | 512 | 
  
    | Maximum Shared Folder Sync Tasks | 8 | 
  
    | Maximum Concurrent CIFS/AFP/FTP Connections | 1000 | 
  
    | Windows Access Control List (ACL) Integration |  | 
  
    | NFS Kerberos Authentication |  | 
  
    | High Availability Manager |  | 
  
    | Log Center |  | 
  
    | Syslog Events per Second | 800 | 
  
    | Virtualization | 
  
    | VMware vSphere 6 with VAAI |  | 
  
    | Windows Server 2012 |  | 
  
    | Windows Server 2012 R2 |  | 
  
    | Windows Server 2016 |  | 
  
    | Citrix Ready |  | 
  
    | OpenStack |  | 
  
    | Add-on Packages (learn more about the complete 
      add-on package list) | 
  
    | Antivirus by McAfee (Trial) |  | 
  
    | Central Management System |  | 
  
    | Chat |  | 
  
    | Maximum Users | 1500 | 
  
    | 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. 
        For tested models with expandable memory, the maximum amount of RAM 
        was installed. | 
  
    | Cloud Station Server |  | 
  
    | Maximum Number of Concurrently Connected Devices | 1000 | 
  
    | Maximum Number of Concurrently Connected Devices (with RAM 
    expansion) | 2000 | 
  
    | Maximum Number of Synced Files (btrfs) | 1,000,000 / single file reaction time 692 ms | 
  
    | Maximum Number of Synced Files (ext4) | 1,000,000 / single file reaction time 456 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. | 
  
    | Document Viewer |  | 
  
    | Download Station |  | 
  
    | Maximum Concurrent Download Tasks | 80 | 
  
    | Drive |  | 
  
    | Maximum Number of Synced Files | 1,000,000 / single file reaction time 437 ms | 
  
    | Maximum Number of Concurrent Connections for PC Clients | 550 | 
  
    | Notes | 
        The Btrfs file system was used for the purpose of testing. 
        The maximum number of concurrentconnections refers to the maximum 
        number of connections that could be maintained whenthe 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. 
        For tested models with expandable memory, the maximum amount of RAM 
        was installed. 
        Non-encrypted shared folders were used during the aforementioned 
        testing. | 
  
    | exFAT Access (optional) |  | 
  
    | MailPlus / MailPlus Server |  | 
  
    | Free Email Accounts | 5 (Licenses required for additional accounts) | 
  
    | Recommended MailPlus Client Number | Up to 100 (Btrfs) / 100 (EXT4) | 
  
    | Maximum Server Performance | 940,000 (Btrfs) / 1,016,000 (EXT4) emails per day, approx. 28.7 GB 
      (Btrfs) / 31 GB (EXT4) | 
  
    | Notes | 
        The CPU and RAM usages were both under 80% when testing recommended 
        client numbers. 
        For tested models with expandable memory, the maximum amount of RAM 
        was installed. 
        Read-write SSD cache was enabled in 5-bay (and above) NAS models 
        with 2 SSDs units installed. 
        The performance of the mail system will slightly decrease in 
        high-availability mode due to data synchronization between the two 
        servers. 
        Functions that were enabled in all of the tests above: anti-spam, 
        anti-virus, DNSBL, greylist, content scan, full-text search (English 
        only). | 
  
    | Media Server |  | 
  
    | DLNA Compliance |  | 
  
    | Moments |  | 
  
    | Facial recognition |  | 
  
    | Subject recognition |  | 
  
    | Office |  | 
  
    | Maximum Users | 1800 | 
  
    | Notes | 
        Multiple files were opened for testing and each file was edited by 
        30 users simultaneously. 
        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 | 
  
    | Snapshot Replication |  | 
  
    | Maximum Snapshots per Shared Folder | 1024 | 
  
    | Maximum Snapshots of all Shared Folder | 65536 | 
  
    | Surveillance Station |  | 
  
    | Maximum IP cam (Licenses required) | 40 (including 2 Free License) (See All Supported IP 
      Cameras) | 
  
    | Total FPS (H.264)* | 1200 FPS @ 720p (1280x720) 960 FPS @ 1080p (19201080)
 520 FPS 
      @ 3M (2048x1536)
 320 FPS @ 5M (2591x1944)
 240 FPS @ 4K (3840x2160)
 | 
  
    | Total FPS (H.265)* | 1200 FPS @ 720p (1280x720) 1200 FPS @ 1080p (19201080)
 880 FPS 
      @ 3M (2048x1536)
 520 FPS @ 5M (2591x1944)
 400 FPS @ 4K (3840x2160)
 | 
  
    | Total FPS (MJPEG)* | 560 FPS @ 720p (1280x720) 270 FPS @ 1080p (19201080)
 190 FPS @ 
      3M (2048x1536)
 110 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 1 - Type 1 (See more) | 
  
    | Maximum Transcoding Channel Number | 1 channel, 30 FPS @ 1080p(19201080), H.264 (AVC)/MPEG-4 Part 2 (XVID, 
      DIVX5)/MPEG-2/VC-1 | 
  
    | Virtual Machine Manager |  | 
  
    | Maximum Virtual DSM Number (Licenses required) | 4 (including 1 Free License) (Learn more) | 
  
    | Notes | Virtual Machine Manager is not supported on hosts running Synology 
      High Availability. | 
  
    | VPN Server |  | 
  
    | Maximum Connections | 20 | 
  
    | Environment & Packaging | 
  
    | Environment | RoHS Compliant | 
  
    | Packaging Content | 
        Main Unit X 1 
        Accessory Pack X 1 
        AC Power Cord X 2 (for RP model) 
        Quick Installation Guide X 1 | 
  
    | Optional Accessories | 
        Surveillance Device License Pack 
        D4N2133-4G DDR4 non-ECC UDIMM* 
        RAMEC2133DDR4-16G DDR4 ECC UDIMM 
        Expansion Unit: RX1217/RX1217RP X 1 
        VS360HD 
        VS960HD 
        Synology RKS1317 - Rail Kit Sliding 
        Synology Ethernet Adapter E10G15-F1 
        Synology Ethernet Adapter E10G17-F2 
        Synology M2D17 M.2 SSD adapter card | 
  
    | Notes | Mixed usage of non-ECC and ECC UDIMMs is not supported. |