MPN DS918+ Hardware Specifications 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):Yes Hardware Transcoding Engine:H. 265 (HEVC), MPEG-2 and VC-1 maximum resolution: 4K (4096 x 2160) maximum frame rate per second (FPS): 30 Memory System Memory:4 GB DDR3L Memory Module Pre-installed:4GB (1 x 4GB) Total Memory Slots:2 Memory Expandable up to:8 GB (4 GB x 2) Storage Drive Bays:4 Maximum Drive Bays with Expansion Unit:9 M. 2 Drive Slots:2 Compatible Drive Type :3.5" SATA HDD 2.5" SATA HDD 2.5 SATA SSD M. 2 NVMe 2280 SSD Maximum Internal Raw Capacity:48 TB (12 TB drive x 4) (Capacity may vary by RAID types) Maximum Raw Capacity with Expansion Units:108 TB (12 TB drive x 9) (Capacity may vary by RAID types) Maximum Single Volume Size:108 TB Hot Swappable Drive:Yes 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. Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 108TB. 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:Yes Power Recovery:Yes Noise Level:19.8 dB(A) Scheduled Power On/Off:Yes Wake on LAN/WAN:Yes Power Supply Unit / Adapter:100W AC Input Power Voltage:100V to 240V 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) DSM Specifications Storage Management Maximum Internal Volume Number:512 Maximum iSCSI Target Number:32 Maximum iSCSI LUN:256 iSCSI LUN Clone/Snapshot, Windows ODX:Yes 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) SSD Support SSD Read/Write Cache (White Paper):Yes SSD TRIM:Yes File Sharing Capacity Maximum Local User Accounts:2048 Maximum Local Groups:256 Maximum Shared Folder:512 Maximum Shared Folder Sync Tasks8 Maximum Concurrent CIFS/AFP/FTP Connections:1000 Windows Access Control List (ACL) Integration:Yes NFS Kerberos Authentication:Yes High Availability Manager:Yes Log Center:Yes Syslog Events per Second:800 Virtualization VMware vSphere 6 with VAAI:Yes Windows Server 2012:Yes Windows Server 2012 R2:Yes Citrix Ready:Yes OpenStack:Yes Add-on Packages Antivirus by McAfee (Trial):Yes Central Management System:Yes Chat:Yes 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:Yes 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 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.
25.6 GB (Btrfs) / 30.9 GB (ext4) Notes:The CPU and RAM usages were both under 80% when testing recommended client numbers. Read-write SSD cache was enabled in 5-bay (and above) NAS models with 2 SSDs units installed. 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:Yes DLNA Compliance:Yes Office:Yes Maximum Users:200 Maximum Simultaneous Editing Users:80 Notes:CPU and RAM usage were both under 80% when the number of maximum users was reached. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM Snapshot Replication:Yes Maximum Snapshots per Shared Folder:1024 Maximum Snapshots of all Shared Folder:65536 Surveillance Station:Yes Maximum IP cam (Licenses required):40 (including 2 Free License) Total FPS H.
264:1200 FPS at 720p (1280x720) 840 FPS at 1080p (19201080) 550 FPS at 3M (2048x1536) 300 FPS at 5M (2591x1944) 180 FPS at 4K (3840x2160) Total FPS H. 265:1200 FPS at 720p (1280x720) 1200 FPS at 1080p (19201080) 900 FPS at 3M (2048x1536) 550 FPS at 5M (2591x1944) 300 FPS at 4K (3840x2160) Total FPS (MJPEG):720 FPS at 720p (1280x720) 500 FPS at 1080p (19201080) 330 FPS at 3M (2048x1536) 200 FPS at 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:Yes Video Transcoding:4K Group 1 Maximum Transcoding Channel Number:2 channel, 30 FPS at 4K (4096 x 2160), H. 265 (HEVC) or 2 channel, 30 FPS 1080p (19201080), H.
265 (HEVC)/MPEG-2/VC-1 VPN Server:Yes Maximum Connections:20 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 2 Quick Installation Guide X 1 Optional Accessories:Surveillance Device License Pack D3NS1866L-4G RAM Module Expansion Unit: DX517 X 1 VS360HD VS960HD Item Dimension (L inchxW inchxH inch) 11 x 9 x 10 DIM Weight 8.84 lbs. The item "Synology Network Attached Storage DS918+ 4 bay DiskStation 1.5GHz 4GB Brown Box" is in sale since Thursday, December 7, 2017. This item is in the category "Computers/Tablets & Networking\Home Networking & Connectivity\Wireless Routers". The seller is "thekeykey" and is located in United States.
This item can be shipped to United States.