Built to support data-intensive applications and demanding workloads
Transform your business with RS3617xs+, a premium network attached storage solution that offers superior data processing performance, simplified data management, optimized virtualization environments, and expandable storage capacity.
A new standard in performance
Powered by a 6-core processor, RS3617xs+ delivers blazing performance with over 4,937 MB/s sequential throughput and 556,727 IOPS under a RAID 5 configuration1 with 10GbE Link Aggregation. Equipped with 8GB DDR4 ECC RAM (upgradeable to 64GB), RS3617xs+ ensures data accuracy when handling high-value data and mission-critical tasks across large-scale businesses.
10GbE network capability
RS3617xs+ comes with two 10GBase-T and four Gigabit ports, and additionally allows for the installation of up to two 10GbE Network Interface Cards (NIC), maximizing bandwidth and meeting high performance requirements for data-intensive applications.
Scale on demand
As your data storage needs grow, RS3617xs+ can be connected to one or two dedicated RX1217/RX1217RP2 expansion units, allowing you to expand storage capacity up to 36 drives3 without disrupting service. The high-bandwidth cable ensures speedy data transmission between the main server and expansion unit.
Reliable redundancy mechanisms
RS3617xs+ comes with comprehensive redundancy mechanisms to ensure business continuity. Built-in LAN ports with failover provides reliable redundancy in the event of unexpected network failure. The high reliability system design including fanless CPU heat-sink and passive cooling technologies prevents single point of failure.
Enhanced encryption performance
RS3617xs+ is equipped with an encryption engine which offloads encryption calculation tasks from the main CPU, thus allowing it to perform other important tasks. In addition, Advanced Encryption Standard (AES) on shared folders with hardware acceleration ensures security without compromising access performance, providing over 3,665 MB/s in reading.
SSD cache technology
RS3617xs+ enables the combination of hard drives and read/write-optimized SSD cache, boosting throughput efficiently while minimizing cost per gigabyte. With full SSD cache reading and writing support, RS3617xs+ offers a significant reduction in I/O latency without crippling your budget. With only a small upfront investment, businesses can benefit from significant server performance enhancement.
5 year warranty
Synology RS3617xs+ is backed with Synology's 5-year limited warranty. With technical support and hardware replacement service, the 5-year warranty maximizes your enterprises' return on investment. For the entire duration, you will enjoy technical support via email and telephone.
Synology Replacement Service (SRS)
The Synology Replacement Service (SRS)* provides free shipment of replacement units as early as the next business day. SRS can expedite the process of replacing defective products and minimize service downtime.
* Available in selected countries.
Award winning OS - DiskStation Manager
Synology DiskStation Manager (DSM) is a sleek, browser-based operating system running on every DiskStation and RackStation, which makes managing your Synology NAS a breeze. Featuring an intuitive user interface, DSM makes accessing and sharing your data smarter and simpler. Synology's Package Center lets you download and install useful add-on packages designed specifically for individual or business needs, meaning you can enjoy more entertainment in your life or better productivity at work.
Fit into business environments easily
With the support of Windows AD, LDAP, and Domain Trust, RS3617xs+ enables seamless account integration. The User Home feature can automatically create a "home" folder for every user account to minimize the administrator's effort in repeatedly creating "home" folders for all accounts. Windows ACL support on RS3617xs+ allows IT administrators to fine tune access controls and set up privileges to files and folders on RS3617xs+ through the familiar Windows user interface. With compatibility for major protocols, RS3617xs+ can eliminate server configuration overhead and enhance IT administrators’ efficiency.
Next-generation data protection and integrity
When dealing with large-scale data storage, businesses require a solution that offers reliable backup and prevents file corruption. With support for the next-generation Btrfs file system, RS3617xs+ ensures information is stored with a high level of data integrity, while providing flexible and efficient data protection tools. See the white paper for more technical details regarding Btrfs and data protection.
Fast and efficient snapshots
Snapshots preserve the history of a shared folder allowing you to save up to 1024 backup copies for point-in-time recovery. Snapshots can be automatically captured up to every 5 minutes, without noticeably impacting system performance.
Metadata mirroring and survivability
Btrfs file system stores two copies of critical metadata on a volume, improving the availability and ensuring the integrity of your file system.
Corruption detection and correction
Btrfs generates checksums for data and metadata, and then verifies the checksums during each read process to ensure the integrity of the filesystem and files. If the file system discovers a mismatch, metadata will be repaired to keep file system consistent. In the meantime, corrupted files will be reported and logged.
Customizable quotas for shared folders
With Btrfs, you can specify a storage limit for each shared folder, making it possible to precisely control space consumption when multiple teams or departments save files on the same Synology NAS server.
Seamless storage solution for virtualization environments
RS3617xs+ provides seamless storage solutions for virtualization environments, including VMware, Citrix, Hyper-V, and OpenStack Cinder. With VMware vSphere 6 and VAAI integration certified, RS3617xs+ helps offload specific storage operations and optimizes computation power for unparalleled performance and efficiency in VMware environments. As the centralized storage of a virtual environment, RS3617xs+ enables virtual machine migration, allowing movement from server to server whilst eliminating service downtime and disruption to user. Windows Offloaded Data Transfer (ODX) and Synology Advanced LUN support greatly improves the efficiency on massive data transfer and migration. With OpenStack Cinder support, RS3617xs+ can be used as a block-based storage component for servers complying with the Cinder API.
Unified storage system
RS3617xs+ enables businesses to cost-effectively manage multi-protocol data by integrating file-level (NAS) and block-level (SAN) storage into one unified storage system. Files can be shared across Windows®, Mac®, and Linux® platforms seamlessly with comprehensive network protocol support (CIFS/SMB, AFP, and NFS). RS3617xs+ provides a cost-effective iSCSI solution, allowing large scale businesses to consolidate storage into data center storage arrays. With thin provisioning available for file-level iSCSI LUN, you can maximize storage utilization by oversubscribing provisions and grow storage space as needed.
Protection with LUN backup, snapshot, and clone
RS3617xs+ enhances the ease of moving and copying data in a virtualized environment with the features LUN Snapshot, clone, and replication. Synology’s LUN Clone and LUN Snapshot only consume 1/1000 of the original size highly optimizing storage usage. In addition, Synology's LUN Snapshot lets you create up 256 snapshots per LUN using point-in-time technology without having any impact on system performance. With better support to servers under VMware vSphere or Windows environment, IT managers can expect guaranteed VM status and data consistency through application-consistent snapshots.
Synology CMS (Central Management System)
For enterprises with more than one Synology NAS server, CMS offers the flexibility and convenience for IT administrators to manage all of them from a single point of entry. Through a simple interface, you can obtain a clear overview on resource consumption and logs, helping you identify any issue right away. With group policies, CMS can do much more for your daily tasks. Once a NAS joins a group, it will automatically adopt its rules and behave as intended, without extra configuration.
Increase business productivity with cloud solutions
With comprehensive cloud solutions, RS3617xs+ lets you create your own private cloud easily. Cloud Station is the perfect package to sync files across multiple devices. Files can be edited in offline mode and later synced to Cloud Station, which keeps up to 32 historical versions, allowing you to restore a file back to previous version or recover deleted files. With the mobile app DS cloud, any change made to a file is automatically synced to your smartphones and tablets. For distributed enterprises, Synology's 2-way sync between different DiskStations ensures employees at different locations share the same information in real-time. IT administrators can handpick individual folders that they want to sync to different devices, manually or automatically based on file format and size. Folders synced by Cloud Station can be encrypted on DSM — no one will be able to access its content without your private key.
Ensuring business continuity & reliability
Uninterrupted availability is a critical goal for all businesses. RS3617xs+ offers Synology High Availability (SHA) technology which combines an active and passive server into one cluster, the former always mirrored to the latter. Shared Folder Sync can replicate data in real-time to another Synology NAS at a remote location, giving your business the Recovery Time Objective (RTO) for prompt disaster recovery. With multiple LAN ports, RS3617xs+ also ensures redundancy in the event of unexpected network failure.
Secure your data
RS3617xs+ offers advanced security measures to protect you from potential security holes. Security Advisor analyzes system settings, password strength, network preferences and removes any possible malware. AppArmor blocks malicious programs from accessing unauthorized system resources. You can also customize the trust level in Package Center to avoid installing packages from untrusted sources, safeguarding your NAS from unknown or tampered files. In addition, RS3617xs+ provides other security add-ons, such as AES encryption, 2-Step verification, IP block & allow list, Antivirus packages, firewall, and DoS attack prevention.
AES 256-bit encryption
Tested with 6 x 10 GbE connections with Link Aggregation enabled and fully loaded with Intel 535 Series 240GB 2.5" SSD. The performance figures vary on different environments.
RS3617xs+ supports up to two Synology RX1217/RX1217RP, purchased separately.
Intel Xeon D-1531
Six Core 2.2 (base) / 2.7 (turbo) GHz
Hardware Encryption Engine (AES-NI)
8 GB DDR4 ECC UDIMM
Memory Module Pre-installed
8 GB x 1
Total Memory Slots
Memory Expandable up to
64 GB (16 GB X 4)
Maximum Drive Bays with Expansion Unit
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 HDD x 12) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units
360 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)
Hot Swappable Drive
"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.
USB 3.0 Port
Size (Height x Width x Depth)
88 mm x 430.5 mm x 692 mm
RJ-45 1GbE LAN Port
4 (with Link Aggregation / Failover support)
Wake on LAN/WAN
RJ-45 10GbE LAN Port
2 (with Link Aggregation / Failover support)
PCIe Slot for Network Card (See more)
2 x Gen3 x8 slots (x8 link)
80 mm x 80 mm x 4 pcs
Fan Speed Mode
Easy Replacement System Fan
Wireless Support (dongle)
Scheduled Power On/Off
Power Supply Unit / Adapter
2 x 500W
AC Input Power Voltage
100V to 240V AC
50/60 Hz, Single Phase
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)
5°C to 35°C (40°F to 95°F)
-20°C to 60°C (-5°F to 140°F)
5% to 95% RH
FCC Class A
CE Class A
BSMI Class A
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 )
Maximum Internal Volume Number
Maximum iSCSI Target Number
Maximum iSCSI LUN
iSCSI LUN Clone/Snapshot, Windows ODX
Supported RAID Type
Basic to RAID 1
Basic to RAID 5
RAID 1 to RAID 5
RAID 5 to RAID 6
Volume Expansion with Larger HDDs
Volume Expansion by Adding a HDD
Global Hot Spare Supported RAID Type
SSD Read/Write Cache (White Paper)
File Sharing Capacity
Maximum User Accounts
Maximum Shared Folder
Maximum Shared Folder Sync Tasks
Maximum Concurrent CIFS/AFP/FTP Connections
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
High Availability Manager
Syslog Events per Second
VMware vSphere 6 with VAAI
Windows Server 2012
Windows Server 2012 R2
Add-on Packages (learn more about the complete add-on package list)
Antivirus by McAfee (Trial)
Central Management System
Cloud Station Server
Maximum Concurrent File Transfers
Maximum Concurrent File Transfers (with RAM expansion)
Maximum Docker DSM Number (Licenses required)
55 (including 1 Free License) (Learn more)
Maximum Concurrent Download Tasks
exFAT Access (optional)
MailPlus / MailPlus Server
Free Email Accounts
5 (Licenses required for additional accounts)
Recommended MailPlus Client Number
Up to 500 (Btrfs) / 700 (EXT4)
Maximum Server Performance
2,948,000 (Btrfs) / 2,626,000 (EXT4) emails per day, approx. 90 GB (Btrfs) / 80.1 GB (EXT4)
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).
Maximum Snapshots per Shared Folder
Maximum Snapshots of all Shared Folder
Maximum Simultaneous Editing Users
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)
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.
Group 1 - Type 2 (See more)
Maximum Transcoding Channel Number
1 channel, 30 FPS @ 720p (1280x720), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1
Virtual DSM Manager
Environment & Packaging
Main Unit X 1
Accessory Pack X 1
AC Power Cord X 2
Quick Installation Guide X 1
Camera License Pack
8GB DDR4 ECC UDIMM
16GB DDR4 ECC UDIMM
Expansion Unit: RX1217/RX1217RP X 2
Synology RKS1317 - Rail Kit Sliding
Synology Ethernet Adapter E10G15-F1
Synology Ethernet Adapter E10G17-F2
| Stock code || IBSY-R3617|
| Brand || Synology|
| Series || RackStation NAS|
| Model || RS3617xs+|
| Type || 12-Bay 2U, 2x PSU [24GB RAM] (no RAIL KIT) + 10GbE|
| ROHS || Y|
| Date added || 05/08/2016|
RS3617xs+ Spec Information
| Form Factor / Drive Height || 88 mm x 431 mm x 692 mm|
| Platter size || 3.5"|
| Platter (alternate) || 2.5"|
| RAM/Cache || 8GB|
| Guarantee || 5yr|
| Processor || Intel Xeon D-1531 Six Core 2.2 GHz|
| CPU Mark (cpubenchmark.net) || 9730|
| Total Drives || 12|
| Total Drives (alternate) || 12|
| RAID || 0:1:5:6:|
| Rack size || 2|
RS3617xs+ Spec Connections
|SATA||SATA 7-pin Discrete with Power||Internal||12|
|USB3||USB3 type A (host)||External||2|
| Speed/RPM || 6Gb/s SATA to Gigabit Ethernet (1,000 Mbit/s)|
| Colour || Black|
| Weight (kg) || 20kg|
| Weight (bare) || 14.5kg|
| External Length (mm) || 720cm|
| External Width (mm) || 610cm|
| External Height (mm) || 270cm|
Synology RackStation NAS RS2818RP+ (64GB ECC) 16-Bay 3U, 2x PSU (64GB Synology ECC RAM) (no RAIL KIT) |
Synology RackStation NAS RS4017xs+ (16GB) 16-Bay 3U, 2x PSU (16GB non-Synology RAM) (no RAIL KIT) |
Synology RackStation NAS RS4017xs+ (32GB ECC) 16-Bay 3U, 2x PSU (32GB non-Synology ECC RAM) (no RAIL KIT) |
Synology RackStation NAS RS4017xs+ (64GB) 16-Bay 3U, 2x PSU (64GB non-Synology RAM) (no RAIL KIT) |
Synology RackStation NAS RS4017xs+ (64GB ECC) 16-Bay 3U, 2x PSU (64GB non-Synology ECC RAM) (no RAIL KIT) |