Hardware Specifications CPU CPU Model Intel Xeon D-1531 CPU Architecture 64-bit CPU Frequency 6-Core 2.2 (base) / 2.7 (turbo) GHz Hardware Encryption Engine (AES-NI)  Memory System Memory 8 GB DDR4 ECC UDIMM Memory Module Pre-installed 8GB (1 x 8GB) Total Memory Slots 4 Memory Expandable up to 64 GB (16 GB x 4) Storage Drive Bays 12 Maximum Drive Bays with Expansion Unit 36 Compatible Drive Type* (See all supported drives) •3.5" SATA HDD •2.5" SATA HDD •2.5" SATA SSD Maximum Internal Raw Capacity 120 TB (10 TB drive x 12) (Capacity may vary by RAID types) Maximum Raw Capacity with Expansion Units 360 TB (10 TB drive 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 Drive  External Ports RJ-45 1GbE LAN Port 4 (with Link Aggregation / Failover support) RJ-45 10GbE LAN Port 2 (with Link Aggregation / Failover support) USB 3.0 Port 2 Expansion Port 2 PCIe PCIe Expansion 2 x Gen3 x8 slots (x8 link) Add-in-card support PCIe Network Interface Card (Learn more) 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 Size (Height x Width x Depth) 88 mm x 430.5 mm x 692 mm Weight 14.5 kg Others System Fan 80 mm x 80 mm x 4 pcs Fan Speed Mode •Full-Speed Mode •Cool Mode •Quiet Mode Easy Replacement System Fan  Wireless Support (dongle)  Power Recovery  Noise Level* 50.2 dB(A) Scheduled Power On/Off  Wake on LAN/WAN  Power Supply Unit / Adapter 2 x 500W AC Input Power Voltage 100V to 240V AC Power Frequency 50/60 Hz, Single Phase Power Consumption* 133.9 W (Access) 69.18 W (HDD Hibernation) British Thermal Unit 456.89 BTU/hr (Access) 236.05 BTU/hr (HDD Hibernation) Redundant Power Supply (for xs+ and RP model)  Environment Temperature Operating Temperature 5°C to 35°C (40°F to 95°F) Storage Temperature -20°C to 60°C (-5°F to 140°F) Relative Humidity 5% to 95% RH Certification •FCC Class A •CE Class A •BSMI Class A Warranty 5 Years Notes •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 Management Maximum Internal Volume Number 1024 Maximum iSCSI Target Number 128 Maximum iSCSI LUN 512 iSCSI LUN Clone/Snapshot, Windows ODX  RAID Group  Supported 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 Support SSD Read/Write Cache (White Paper)  SSD TRIM  File Sharing Capacity Maximum Local User Accounts 16000 Maximum Local Groups 512 Maximum Shared Folder 512 Maximum Shared Folder Sync Tasks 32 Maximum Concurrent CIFS/AFP/FTP Connections 2048 Windows Access Control List (ACL) Integration  NFS Kerberos Authentication  High Availability Manager  Log Center  Syslog Events per Second 3000 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 Users 1600 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 Devices 2000 Maximum Number of Concurrently Connected Devices (with RAM expansion) 10000 Maximum Number of Synced Files (btrfs) 3,000,000 / single file reaction time 530 ms Maximum Number of Synced Files (ext4) 3,000,000 / single file reaction time 229 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. DDSM  Maximum DDSM Number (Licenses required) 55 (including 1 Free License) (Learn more) Document Viewer  Download Station  Maximum Concurrent Download Tasks 80 exFAT Access (optional)  MailPlus / MailPlus Server  Free Email Accounts 5 (Licenses required for additional accounts) Recommended MailPlus Client Number Up to 600 (Btrfs) / 700 (EXT4) Maximum Server Performance 3,088,000 (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 Server  DLNA Compliance  Office  Maximum Users 1600 Maximum Simultaneous Editing Users 100 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 PetaSpace  Snapshot Replication  Maximum Snapshots per Shared Folder 1024 Maximum Snapshots of all Shared Folder 65536 Surveillance Station  Maximum IP cam (Licenses required) 90 (including 2 Free License) (See All Supported IP Cameras) Total FPS (H.264)* 2700 FPS @ 720p (1280x720) 2250 FPS @ 1080p (1920×1080) 900 FPS @ 3M (2048x1536) 800 FPS @ 5M (2591x1944) Total FPS (MJPEG)* 1050 FPS @ 720p (1280x720) 525 FPS @ 1080p (1920×1080) 350 FPS @ 3M (2048x1536) 220 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. Video Station  Video Transcoding Group 1 - Type 1 (See more) Maximum Transcoding Channel Number 1 channel, 30 FPS @ 1080p(1920×1080), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1 VPN Server  Maximum Connections 30 Environment & Packaging Environment RoHS Compliant Packaging Content •Main Unit X 1 •Accessory Pack X 1 •AC Power Cord X 2 •Quick Installation Guide X 1 Optional Accessories •Surveillance Device License Pack •8GB DDR4 ECC UDIMM •16GB DDR4 ECC UDIMM •Expansion Unit: RX1217/RX1217RP X 2 •VS360HD •Synology RKS1317 - Rail Kit Sliding •Synology Ethernet Adapter E10G15-F1 •Synology Ethernet Adapter E10G17-F2