Synology DS918+ DiskStation Powerful and scalable 4-bay NAS for growing businesses

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Hardware Specifications
CPU
CPU ModelIntel Celeron J3455
CPU Architecture64-bit
CPU FrequencyQuad Core 1.5 burst up to 2.3 GHz
Hardware Encryption Engine (AES-NI)
Hardware Transcoding EngineH.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30
Memory
System Memory4 GB DDR3L
Memory Module Pre-installed4GB (1 x 4GB)
Total Memory Slots2
Memory Expandable up to8 GB (4 GB x 2)
Storage
Drive Bays4
Maximum Drive Bays with Expansion Unit9
M.2 NVMe Drive Slots2
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
  • M.2 NVMe 2280 SSD
Maximum Internal Raw Capacity48 TB (12 TB drive x 4) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units108 TB (12 TB drive x 9) (Capacity may vary by RAID types)
Maximum Single Volume Size108 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 single volume size is not directly related to the maximum raw capacity. (Learn more)
  • Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 108TB.
External Ports
RJ-45 1GbE LAN Port2 (with Link Aggregation / Failover support)
USB 3.0 Port2
eSATA Port1
File System
Internal Drives
  • Btrfs
  • EXT4
External Drives
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
NotesexFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth)166 mm x 199 mm x 223 mm 
Weight2.28 kg 
Others
System Fan92 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 / Adapter100W 
AC Input Power Voltage100V to 240V AC
Power Frequency50/60 Hz, Single Phase
Power Consumption*28.8 W (Access)  12.6 W (HDD Hibernation) 
British Thermal Unit98.27 BTU/hr (Access)  42.99 BTU/hr (HDD Hibernation) 
Environment Temperature
Operating Temperature5°C to 40°C (40°F to 104°F)
Storage Temperature-20°C to 60°C (-5°F to 140°F)
Relative Humidity5% to 95% RH
Certification
  • FCC Class B
  • CE Class B
  • BSMI Class B
Warranty3 Years
NotesPower consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
DSM Specifications ( See more )
Storage Management
Maximum Internal Volume Number512
Maximum iSCSI Target Number32
Maximum iSCSI LUN256
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
Volume Expansion by Adding a HDD
  • Synology Hybrid RAID
  • RAID 5
  • JBOD
  • 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 Sharing Capacity
Maximum Local User Accounts2048
Maximum Local Groups256
Maximum Shared Folder512
Maximum Shared Folder Sync Tasks8
Maximum Concurrent CIFS/AFP/FTP Connections1000
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
High Availability Manager
Log Center
Syslog Events per Second800
Virtualization
VMware vSphere 6 with VAAI
Windows Server 2012
Windows Server 2012 R2
Citrix Ready
OpenStack
Add-on Packages (learn more about the complete add-on package list)
Antivirus by McAfee (Trial)
Central Management System
Chat
Maximum Users1500
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 Devices1000
Maximum Number of Concurrently Connected Devices (with RAM expansion)2000
Maximum Number of Synced Files (btrfs)1,000,000 / single file reaction time 744 ms
Maximum Number of Synced Files (ext4)1,000,000 / single file reaction time 630 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.
Virtual Machine Manager
Maximum Virtual DSM Number (Licenses required)4 (including 1 Free License) (Learn more)
Document Viewer
Download Station
Maximum Concurrent Download Tasks80
exFAT Access (optional)
MailPlus / MailPlus Server
Free Email Accounts(Licenses required for additional accounts)
Recommended MailPlus Client NumberUp to 90 (Btrfs) / 90 (ext4)
Maximum Server Performance840,000 (Btrfs) / 1,014,000 (ext4) emails per day, approx. 25.6 GB (Btrfs) / 30.9 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
Office
Maximum Users200
Maximum Simultaneous Editing Users80
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
Snapshot Replication
Maximum Snapshots per Shared Folder1024
Maximum Snapshots of all Shared Folder65536
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 (1920×1080)  550 FPS @ 3M (2048x1536)  300 FPS @ 5M (2591x1944)  180 FPS @ 4K (3840x2160)
Total FPS (H.265)*1200 FPS @ 720p (1280x720)  1200 FPS @ 1080p (1920×1080)  900 FPS @ 3M (2048x1536)  550 FPS @ 5M (2591x1944)  300 FPS @ 4K (3840x2160)
Total FPS (MJPEG)*720 FPS @ 720p (1280x720)  500 FPS @ 1080p (1920×1080)  330 FPS @ 3M (2048x1536)  200 FPS @ 5M (2591x1944)
NotesSurveillance 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 Transcoding4K Group 1 (See more)
Maximum Transcoding Channel Number2 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
VPN Server
Maximum Connections20
Environment & Packaging
EnvironmentRoHS 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 2
  • Quick Installation Guide X 1
Optional Accessories
  • Surveillance Device License Pack
  • D3NS1866L-4G RAM Module
  • Expansion Unit: DX517 X 1
  • VS360HD
  • VS960HD

High-speed scalable storage server

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.

CPU

Quad-core 1.5GHz burst up to 2.3GHz

Network

Dual 1GbE LAN ports

Memory

4GB DDR3L, scalable up to 8GB

Performance

Over 225 MB/s and 221 MB/s encrypted sequential reading and writing

Satisfy your need for performance and capacity

DS918+ supports up to two M.2 NVMe 2280 SSDs, allowing fast system cache creation without occupying internal drive bays. Scalable up to 9 drives with a Synology Expansion Unit DX517, DS918+ answers the need for flexible storage capacity.

Btrfs: Next generation storage efficiency

Btrfs file system introduces the most advanced storage technologies to meet the management needs of modern large scale businesses:


Flexible Shared Folder/User Quota System provides comprehensive quota control on all user accounts and shared folders

Snapshot Replication provides schedulable and storage capacity-saving data protection with 1,024 shared folder backups and 65,000 system-wide snapshots

File or folder level data restoration makes data recovery fast and flexible

Automatic file self-healing detects and recovers corrupted files without user intervention

Learn more about the benefits of using Btrfs 

Digital asset protection

Powered by Synology DiskStation Manager (DSM), Synology NAS offers advanced security measures to protect against sudden data loss and potential security holes. Learn more


Security Advisor

Analyzes system settings, password strength, network preferences, and removes any possible malware.

AppArmor

A kernel-level enhancement that blocks malicious programs from accessing unauthorized system resources.

AES 256-bit encryption

Encrypt shared folders and network data transmission to keep data from unauthorized access.

2-step verification

Prevent others from logging in to your DSM by generating a one-time password (OTP) on your mobile device.

Trust Level

Customize the trust level in Package Center to avoid installing packages from untrusted sources, safeguarding your NAS from unknown or tampered package files.

Synchronize files across your devices

Cloud Station Suite provides real-time data synchronization across all your devices, such as computers, mobile devices, and other Synology NAS whenever a file is modified. "Intelliversioning" keeps the most important file versions to better utilize storage space. Learn more 


Cloud Station Sharesync


Cloud Station Drive


Cloud Station Server


DS Cloud

4K Multimedia Server

Access and stream your 4K media content anytime and anywhere. DS918+ supports 4K H.264/H.265 online transcoding via Video Station and DS video, allowing 4K videos to be converted and played on the fly on other computers, smartphones, and media players that originally do not support Ultra HD formats. Learn more

4K Multimedia Server

Access and stream your 4K media content anytime and anywhere. DS918+ supports 4K H.264/H.265 online transcoding via Video Station and DS video, allowing 4K videos to be converted and played on the fly on other computers, smartphones, and media players that originally do not support Ultra HD formats. Learn more

Powered by Synology DSM


Surveillance Station

Complete surveillance solution for recording, monitoring, and management.

Learn more


Collaboration Suite

Synology Office, Calendar and Chat guarantee a secure and high-performance private communication and user-friendly content organization.

Learn more


All-in-one server

Save additional investment by integrating various network services, web/mail services, management applications into your NAS.

Learn more


DSM UI

Award-winning operating system with an intuitive user interface and powerful capabilities.

Learn more


Desktop Backup

Simplified backup solution for your Mac, PC, and mobile devices.

Learn more


Security

Comprehensive built-in security tools are constantly updated to tackle evolving threats and protect your devices.

Learn more

  • 1Status indicator
  • 2Drive status indicator
  • 3Drive tray lock
  • 4USB 3.0 port
  • 5Power button and indicator
  • 6Drive tray
  • 71GbE RJ-45 port
  • 8Reset button
  • 9eSATA port
  • 10Power port
  • 11Fan
  • 12Kensington Security Slot
  • 13USB 3.0 port
  • 14M.2 NVMe SSD slot (bottom side)

The manufacture company:
Synology
Product Specification
Operating Frequency:
  • Quad Core 1.5 burst up to 2.3 GHz
Input Power:
  • 100V to 240V AC
Output Frequency - sync to mains:
50/60 Hz, Single Phase
نوى المعالج:
Intel Celeron J3455 Quad Core 1.5 GHz (up to 2.3 GHz)
CPU:
Intel Celeron J3455 Quad-core 1.5 GHz, burst up to 2.3 GHz
MEMORY:
4 GB DDR3L
Memory Specification :
4GB (1 x 4GB)
Ports:
  • eSATA Port 1
  • RJ-45 1GbE LAN Port 2 (with Link Aggregation / Failover support)
Form Factor:
4-Bay
Dimension:
  • 166 mm x 199 mm x 223 mm
الوزن:
  • 2.28 kg
Max. Power Consumption:
  • 12.6 W (HDD Hibernation)
  • 28.8 W (Access)
Operating Temperature:
  • -20°C to 60°C (-5°F to 140°F)
  • 5°C to 40°C (40°F to 104°F)
المنتج كما هو موضح بالصوره شكرا لكم وصوله في وقت قياسي ..كما اود ان انوه بأن السعر كان ارخص من امازون ..كما اتمنى كذلك اسعار الهاردسكات تكون ارخص من امازون لدعمكم .
 
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