Hardware SpecificationsCPUCPU ModelIntel Xeon D-1531CPU Architecture64-bitCPU FrequencySix Core 2.2 (base) / 2.7 (turbo) GHzHardware Encryption Engine (AES-NI)MemorySystem Memory8 GB DDR4 ECC UDIMMMemory Module Pre-installed8 GB x 1Total Memory Slots4Memory Expandable up to64 GB (16 GB x 4)StorageDrive Bay(s)12Maximum Drive Bays with Expansion Unit36Compatible Drive Type* (See all supported drives)

3.5″ SATA HDD
2.5″ SATA HDD
2.5″ SATA SSD

Maximum Internal Raw Capacity120 TB (10 TB HDD x 12) (Capacity may vary by RAID types)Maximum Raw Capacity with Expansion Units360 TB (10 TB HDD x 36) (Capacity may vary by RAID types)Maximum Single Volume Size

200 TB (32GB RAM required, for RAID 5 or RAID 6 groups only)
108 TB

Hot Swappable DriveExternal PortsUSB 3.0 Port2Expansion Port2File 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)88 mm x 430.5 mm x 692 mm
Weight14.5 kg
OthersRJ-45 1GbE LAN Port4 (with Link Aggregation / Failover support)Wake on LAN/WANRJ-45 10GbE LAN Port2 (with Link Aggregation / Failover support)PCIe Slot for Network Card (See more)2 x Gen3 x8 slots (x8 link)System Fan80 mm x 80 mm x 4 pcsFan Speed Mode

Full-Speed Mode
Cool Mode
Quiet Mode

Easy Replacement System FanWireless Support (dongle)Power RecoveryNoise Level*50.2 dB(A)
Scheduled Power On/OffPower Supply Unit / Adapter2 x 500W
AC Input Power Voltage100V to 240V ACPower Frequency50/60 Hz, Single PhasePower Consumption*133.9 W (Access)
69.18 W (HDD Hibernation)
British Thermal Unit456.89 BTU/hr (Access)
236.05 BTU/hr (HDD Hibernation)
Redundant Power Supply (for xs+ and RP model)Environment TemperatureOperating Temperature5°C to 35°C (40°F to 95°F)Storage Temperature-20°C to 60°C (-5°F to 140°F)Relative Humidity5% to 95% RHCertification

FCC Class A
CE Class A
BSMI Class A

Warranty5 YearsNotes

Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
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: 24.25-25.75˚C; Humidity: 58.2-61.8%

DSM Specifications ( See more )Storage ManagementMaximum Internal Volume Number1024Maximum iSCSI Target Number128Maximum iSCSI LUN512iSCSI LUN Clone/Snapshot, Windows ODXRAID GroupSupported RAID Type

RAID F1
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

RAID F1
RAID 1
RAID 5
RAID 6

Volume Expansion by Adding a HDD

RAID F1
RAID 5
RAID 6
JBOD

Global Hot Spare Supported RAID Type

RAID F1
RAID 1
RAID 5
RAID 6
RAID 10

SSD SupportSSD Read/Write Cache (White Paper)SSD TRIMFile Sharing CapacityMaximum Local User Accounts16000Maximum Local Groups512Maximum Shared Folder512Maximum Shared Folder Sync Tasks32Maximum Concurrent CIFS/AFP/FTP Connections2048Windows Access Control List (ACL) IntegrationNFS Kerberos AuthenticationHigh Availability ManagerLog CenterSyslog Events per Second3000VirtualizationVMware 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 Users1600Notes

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 Transfers2000Maximum Concurrent File Transfers (with RAM expansion)10000Docker DSMMaximum Docker DSM Number (Licenses required)55 (including 1 Free License) (Learn more)Document ViewerDownload StationMaximum Concurrent Download Tasks80exFAT Access (optional)HiDrive BackupMailPlus / MailPlus ServerFree Email Accounts5 (Licenses required for additional accounts)Recommended MailPlus Client NumberUp to 600 (Btrfs) / 700 (EXT4)Maximum Server Performance3,088,000 (Btrfs) / 3,009,000 (EXT4) emails per day, approx. 94.2 GB (Btrfs) / 91.8 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 ServerDLNA ComplianceOfficeMaximum Users1600Maximum Simultaneous Editing Users100Notes

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

PetaSpaceSnapshot ReplicationMaximum Snapshots per Shared Folder1024Maximum Snapshots of all Shared Folder65536Surveillance StationMaximum IP cam (Licenses required)90 (including 2 Free License) (See All Supported IP Cameras)Total FPS (H.264)*2700 FPS @ 720p (1280×720)
2250 FPS @ 1080p (1920×1080)
900 FPS @ 3M (2048×1536)
800 FPS @ 5M (2591×1944)Total FPS (MJPEG)*1050 FPS @ 720p (1280×720)
525 FPS @ 1080p (1920×1080)
350 FPS @ 3M (2048×1536)
220 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 2 (See more)Maximum Transcoding Channel Number1 channel, 30 FPS @ 720p (1280×720), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1VPN ServerMaximum Connections30Environment & PackagingEnvironmentRoHS CompliantPackaging Content