Hardware SpecificationsCPUCPU ModelIntel Atom C2538CPU Architecture64-bitCPU FrequencyQuad Core 2.4 GHzHardware Encryption Engine (AES-NI)MemorySystem Memory2/8 GB DDR3Memory Module Pre-installed2GB (1 x 2GB) / 8GB (2 x 4GB)Total Memory Slots2Memory Expandable up to16 GB (8 GB x 2)StorageDrive Bays8Maximum Drive Bays with Expansion Unit18Compatible Drive Type* (See all supported drives)
- 3.5″ SATA HDD
- 2.5″ SATA HDD
- 2.5″ SATA SSD
Maximum Internal Raw Capacity80 TB (10 TB HDD x 8) (Capacity may vary by RAID types)Maximum Raw Capacity with Expansion Units180 TB (10 TB HDD x 18) (Capacity may vary by RAID types)Maximum Single Volume Size108 TBHot Swappable DriveNotes
- “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.
- Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 108TB.
External PortsRJ-45 1GbE LAN Port4 (with Link Aggregation / Failover support)USB 3.0 Port4eSATA Port2PCIePCIe Expansion1 x Gen2 x8 slot (x4 link)Add-in-card support
- M2D17 – Dual M.2 SSD adapter card for SSD cache
- PCIe Network Interface Card (Learn more)
File SystemInternal Drives
- Btrfs
- EXT4
External Drives
- Btrfs
- EXT4
- EXT3
- FAT
- NTFS
- HFS+
- exFAT*
NotesexFAT Access is purchased separately in Package Center.AppearanceSize (Height x Width x Depth)166 mm x 343 mm x 243 mm
Weight6.0 kg
OthersSystem Fan120 mm x 120 mm x 2 pcsFan Speed Mode
- Cool Mode
- Quiet Mode
Easy Replacement System FanWireless Support (dongle)Brightness adjustable front LED indicatorsPower RecoveryNoise Level*22.2 dB(A)
Scheduled Power On/OffWake on LAN/WANPower Supply Unit / Adapter250W
AC Input Power Voltage100V to 240V ACPower Frequency50/60 Hz, Single PhasePower Consumption*61.5 W (Access)
31.6 W (HDD Hibernation)
British Thermal Unit156.55 BTU/hr (Access)
86.09 BTU/hr (HDD Hibernation)
Environment TemperatureOperating 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% RHCertification
- FCC Class B
- CE Class B
- BSMI Class B
Warranty3 YearsApplicable Extended WarrantyEW201 – 2 Year ExtensionNotes
- Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
- Noise Level Testing Environment: Fully loaded with Seagate 1TB ST31000520AS 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: 24.25-25.75˚C; Humidity: 58.2-61.8%
DSM Specifications ( See more )Storage ManagementMaximum Internal Volume Number512Maximum iSCSI Target Number32Maximum iSCSI LUN256iSCSI LUN Clone/Snapshot, Windows ODXSupported 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
SSD SupportSSD Read/Write Cache (White Paper)SSD TRIMFile Sharing CapacityMaximum Local User Accounts2048Maximum Local Groups256Maximum Shared Folder512Maximum Shared Folder Sync Tasks8Maximum Concurrent CIFS/AFP/FTP Connections512(2GB) / 2048(8GB)Windows Access Control List (ACL) IntegrationNFS Kerberos AuthenticationHigh Availability ManagerLog CenterSyslog Events per Second800VirtualizationVMware vSphere 6 with VAAIWindows Server 2012Windows Server 2012 R2Citrix ReadyOpenStackAdd-on Packages (learn more about the complete add-on package list)Antivirus by McAfee (Trial)Central Management SystemChatMaximum Users400Notes
- The number of concurrent HTTP connections for Chat was configured to the maximum.
- CPU and RAM usage were both under 80% when testing the recommended number of clients.
- For tested models with expandable memory, the maximum amount of RAM was installed.
Cloud Station ServerMaximum Concurrent File Transfers512 (2GB) / 2000 (8GB)Maximum Concurrent File Transfers (with RAM expansion)9000DDSMMaximum DDSM Number (Licenses required)15 (including 1 Free License) (Learn more)Document ViewerDownload StationMaximum Concurrent Download Tasks80exFAT Access (optional)MailPlus / MailPlus ServerFree Email Accounts5 (Licenses required for additional accounts)Recommended MailPlus Client NumberUp to 90Maximum Server Performance825,000 emails per day, approx. 25.18 GBNotes
- 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 ServerDLNA ComplianceOfficeMaximum Users400Maximum Simultaneous Editing Users80Notes
- CPU and RAM usage were both under 80% when testing the recommended number of clients.
- 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 ReplicationMaximum Snapshots per Shared Folder1024Maximum Snapshots of all Shared Folder65536Surveillance StationMaximum IP cam (Licenses required)40 (including 2 Free License) (See All Supported IP Cameras)Total FPS (H.264)*1200 (2GB RAM) / 1200 (8GB RAM) FPS @ 720p (1280×720)
900 (2GB RAM) / 1080 (8GB RAM) FPS @ 1080p (1920×1080)
320 (2GB RAM) / 480 (8GB RAM) FPS @ 3M (2048×1536)
270 (2GB RAM) / 280 (8GB RAM) FPS @ 5M (2591×1944)Total FPS (MJPEG)*540 (2GB RAM) / 760 (8GB RAM) FPS @ 720p (1280×720)
200 (2GB RAM) / 400 (8GB RAM) FPS @ 1080p (1920×1080)
150 (2GB RAM) / 280 (8GB RAM) FPS @ 3M (2048×1536)
90 (2GB RAM) / 200 (8GB RAM) FPS @ 5M (2591×1944)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 StationVideo TranscodingGroup 1 – Type 1 (See more)Maximum Transcoding Channel Number1 channel, 30 FPS @ 1080p(1920×1080), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1VPN ServerMaximum Connections20Environment & PackagingEnvironmentRoHS CompliantPackaging Content
- Main Unit X 1
- Accessory Pack X 1
- AC Power Cord X 1
- RJ-45 LAN Cable X 2
- Quick Installation Guide X 1
Optional Accessories
- Surveillance Device License Pack
- 8GB (4GB x 2) DDR3 RAM Module Kit
- 16GB (8GB x 2) DDR3 RAM Module Kit
- Expansion Unit: DX517 X 2
- VS360HD
- Synology Ethernet Adapter E10G15-F1
- Synology Ethernet Adapter E10G17-F2
- Synology M2D17 M.2 SSD adapter card
