Synology Diskstation 4-bay 3.5" Diskless 2xgbe NAS Network Storage (DS918+)

SKU : DS918+
Brand : Synology
This product is either discontinued or we cannot get that from suppliers.
Synology Diskstation 4-bay 3.5" Diskless 2xgbe NAS Network Storage (DS918+) Synology DS918+ is designed for small and medium-sized businesses and IT enthusiasts. With a powerful built-in AES-NI hardware encryption engine, DS918+ provides exceptional encrypted file transmission. Also capable of transcoding up to two channels of H.265/H.264 4K videos at the same time, DS918+ is ideal for sharing and storing ultra-high definition media content.
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Product Description

Manufacturer # Synology | Model # DS918+

 

Synology Diskstation 4-bay 3.5" Diskless 2xgbe NAS Network Storage (DS918+) CPU Architecture - 64-bit, System Memory - 4 GB DDR3L, Drive Bays - 4, USB 3.0 Port - 2, eSATA Port - 1, Power Supply Unit / Adapter - 100 W, Power Frequency - 50/60 Hz, Single Phase, Operating Temperature - 5°C to 40°C (40°F to 104°F), Warranty - 3 year warranty.

 

Manufacturer Warranty: 3 years

 

Synology Diskstation 4-bay 3.5" Diskless 2xgbe NAS Network Storage (DS918+) Synology DS918+ is designed for small and medium-sized businesses and IT enthusiasts. With a powerful built-in AES-NI hardware encryption engine, DS918+ provides exceptional encrypted file transmission. Also capable of transcoding up to two channels of H.265/H.264 4K videos at the same time, DS918+ is ideal for sharing and storing ultra-high definition media content.

 

Technical Specifications

Hardware Specifications

CPU

CPU

CPU Model Intel Celeron J3455
  CPU Architecture 64-bit
  CPU Frequency Quad Core 1.5 burst up to 2.3 GHz
  Hardware Encryption Engine (AES-NI)  
  Hardware Transcoding Engine H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30

Memory

Memory

System Memory 4 GB DDR3L
  Memory Module Pre-installed 4 GB (4 GB x 1)
  Total Memory Slots 2
  Memory Expandable up to 8 GB (4 GB x 2)
  Notes
  • 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.
  • 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.

Storage

Storage

Drive Bays 4
  Maximum Drive Bays with Expansion Unit 9
  M.2 Drive Slots 2 (NVMe)
  Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
  • M.2 2280 NVMe SSD
  Maximum Internal Raw Capacity 64 TB (16 TB drive x 4) (Capacity may vary by RAID types)
  Maximum Raw Capacity with Expansion Units 144 TB (64 TB + 16 TB drive x 5) (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)
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.

External Ports

External Ports

RJ-45 1GbE LAN Port 2 (with Link Aggregation / Failover support)
  USB 3.0 Port 2
  eSATA Port 1

File System

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

Appearance

Size (Height x Width x Depth) 166 mm x 199 mm x 223 mm
  Weight 2.28 kg

Others

Others

System Fan 92 mm x 92 mm x 2 pcs
  Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  Brightness Adjustable Front LED Indicators  
  Power Recovery  
  Noise Level* 19.8 dB(A)
  Scheduled Power On / Off  
  Wake on LAN / WAN  
  Power Supply Unit / Adapter 100 W
  AC Input Power Voltage 100 V to 240 V AC
  Power Frequency 50/60 Hz, Single Phase
  Power Consumption* 28.8 W (Access)
12.6 W (HDD Hibernation)
  British Thermal Unit 98.27 BTU/hr (Access)
42.99 BTU/hr (HDD Hibernation)
  Notes
  • Power consumption is measured when it's 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%

Temperature

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

Certification

  • EAC
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI

Warranty

Warranty

3-year hardware warranty, extendable to 5-year coverage - EW201
  Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)

Environment

Environment

RoHS Compliant

Packaging Content

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 2
  • Quick Installation Guide X 1

Optional Accessories

Optional Accessories

  • D3NS1866L-4G DDR3 non-ECC SO-DIMM
  • Surveillance Device License Pack
  • Expansion Unit: DX517 X 1
  • VS360HD
  • VS960HD

DSM Specifications

Storage Management

Storage Management

Maximum Internal Volume Number 64
  Maximum iSCSI Target Number 128
  Maximum iSCSI LUN 256
  iSCSI LUN Clone/Snapshot, Windows ODX  
  SSD Read / Write Cache (White Paper)  
  SSD TRIM  
  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
  • RAID 10
  Volume Expansion by Adding a HDD
  • Synology Hybrid RAID
  • JBOD
  • RAID 5
  • RAID 6 (with Expansion Unit)
  Global Hot Spare Supported RAID Type
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)

File Services

File Services

File Protocol CIFS/AFP/NFS/FTP/WebDAV
  Maximum Concurrent CIFS/AFP/FTP Connections 1,000
  Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) 2,000
  Windows Access Control List (ACL) Integration  
  NFS Kerberos Authentication  

Account & Shared Folder

Account & Shared Folder

Maximum Local User Accounts 2,048
  Maximum Local Groups 256
  Maximum Shared Folder 512
  Maximum Shared Folder Sync Tasks 16

High Availability

High Availability

Synology High Availability  

Log Center

Log Center

 

Log Center

Syslog Events per Second 800

Virtualization

Virtualization

VMware vSphere 6 with VAAI  
  Windows Server 2012  
  Windows Server 2012 R2  
  Windows Server 2016  
  Citrix Ready  
  OpenStack  

General Specifications

General Specifications

Networking Protocols SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
  Supported Browsers
  • Chrome
  • Firefox
  • Edge
  • Internet Explorer 10 onwards
  • Safari 10 onwards
  • Safari (iOS 10 onwards)
  • Chrome (Android 6.0 onwards)
  Supported Language English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, ???????, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, ?eský, ???????, ???, ???, ????, ????

Add-on Packages view the complete package list

Antivirus by McAfee (Trial)

Antivirus by McAfee (Trial)

 

Central Management System

Central Management System

 

Synology Chat

Synology Chat

 

Synology Chat

Maximum Users 1,500
  Notes
  • The number of concurrent HTTP connections for Synology 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

Cloud Station Server

 

Cloud Station Server

Recommended Number of Hosted Files 1,000,000
  Recommended Number of Concurrent Sync Clients 1,000 (the number of connections that can be maintained when the recommended number of hosted files was reached)
  Notes
  • The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time.
  • The maximum number of hosted files refers to the maximum number of files that can be indexed and hosted by the Cloud Station Server service. RAM expansion was not used during testing.
  • Non-encrypted shared folders were used during the aforementioned testing.

Document Viewer

Document Viewer

 

Download Station

Download Station

 

Download Station

Maximum Concurrent Download Tasks 80

exFAT Access (Optional)

exFAT Access (Optional)

 

Synology MailPlus / MailPlus Server

Synology MailPlus / MailPlus Server

 

Synology MailPlus / MailPlus Server

Free Email Accounts 5 (Licenses required for additional accounts)
  Maximum Number of Concurrent Users 100
  Maximum Server Performance 1,052,000 emails per day, approx. 32GB
  Notes
  • The CPU and RAM usage were both under 80% when testing the maximum number of concurrent users.
  • 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

Media Server

 

Media Server

DLNA Compliance  

Moments

Moments

 

Moments

Facial Recognition  
  Subject Recognition  
  Auto Color & Rotate  
  Moments Select  

Snapshot Replication

Snapshot Replication

 

Snapshot Replication

Maximum Snapshots per Shared Folder 1,024
  Maximum of System Snapshots 65,536

Surveillance Station

Surveillance Station

 

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)
840 FPS @ 1080p (1920x1080)
550 FPS @ 3M (2048x1536)
300 FPS @ 5M (2591x1944)
180 FPS @ 4K (3840x2160)
  Total FPS (H.265)* 1200 FPS @ 720p (1280x720)
1200 FPS @ 1080p (1920x1080)
900 FPS @ 3M (2048x1536)
550 FPS @ 5M (2591x1944)
300 FPS @ 4K (3840x2160)
  Total FPS (MJPEG)* 720 FPS @ 720p (1280x720)
500 FPS @ 1080p (1920x1080)
330 FPS @ 3M (2048x1536)
200 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.

Synology Drive

Synology Drive

 

Synology Drive

Recommended Number of Hosted Files 500,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
  Recommended Number of Concurrent Sync Clients 450 (the number of connections that can be maintained when the recommended number of hosted files was reached)
  Notes
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Exceeding the limits above may result in longer response time in file operations.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.

Synology Office

Synology Office

 

Synology Office

Maximum Users 1,800
  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

Video Station

Video Station

 

Video Station

Video Transcoding 4K Group 1 (See more)
  Maximum Transcoding Channel Number 2 channel, 30 FPS @ 4K (4096 x 2160), H.264 (AVC)/H.265 (HEVC) or
2 channel, 30 FPS @ 1080p (1920×1080), H.264 (AVC)/H.265 (HEVC)/MPEG-2/VC-1

Virtual Machine Manager

Virtual Machine Manager

 

Virtual Machine Manager

Recommended Virtual Machine Instances 4 (Learn more)
  Recommended Virtual DSM Number (Licenses required) 4 (including 1 Free License)
  Notes
  • Virtual Machine Manager is not supported on hosts running Synology High Availability.
  • The specifications vary depending on system configuration and memory size.

VPN Server

VPN Server

 

VPN Server

Maximum Connections 30

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