RackStation RS4017xs+

Performance Compatibility Download Center Compare
Performance Compatibility Download Center Compare

RackStation RS4017xs+

Highly scalable NAS designed for virtualization, data-intensive applications and service continuity for large scale businesses

Powerful storage solution

RS4017xs+ provides rock-solid storage solution with ultra-high performance at over 240,079 random read IOPS and 6,221 MB/s sequential read throughput1. DDR4 ECC UDIMM and 10GbE connectivity guarantees data accuracy and performance for mission-critical environment.

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CPU

Intel® Xeon® D-1541 8-core processor

RAM options

8 GB DDR4 ECC UDIMM, up to 64 GB

Network

Two 10GBase-T ports, optional 10GbE NIC support

Chassis

3U chassis design, 16 SATA drive bays

Robust scalability and reliability

Storage capacity of RS4017xs+ can be further scaled up when connected to two Synology Expansion Unit RX1217 or RX1217RP1, providing a total drive number of 40 without disrupting host services.

5-year warranty

As we're committed to improving product innovation and quality, Synology guarantees a robust and reliable data management experience with a 5-year limited warranty, providing responsive technical support and hardware replacement services to maximize your return on investment.

Synology Replacement Service (SRS)

SRS provides free advance replacement units as early as the next business day in selected regions, maximizing the service uptime for your mission-critical storage and ensuring your business continuity.Check service availability here.

Fully certified storage virtualization solutions

Synology iSCSI storage fully supports most virtualization solutions to enhance work efficiency with easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations and optimizes computation efficiency. Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rate. OpenStack Cinder support turns your Synology NAS into a block-based storage component.

Btrfs: Next generation storage efficiency

Btrfs file system introduces the most advanced storage technologies to meet the management needs of modern large scale businesses:

Flexible Shared Folder/User Quota System provides comprehensive quota control on all user accounts and shared folders

Snapshot Replication provides schedulable and storage capacity-saving data protection with 1,024 shared folder backups and 65,000 system-wide snapshots

File or folder level data restoration makes data recovery fast and flexible

Automatic file self-healing detects and recovers corrupted files without user intervention

Powered by Synology DSM

Synology High Availability

Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.

Learn more

Hyper Backup

Store multiple backup versions with block-level incremental data backup and cross-version deduplication.

Learn more

Cloud Station Suite

Synchronize cross-platform data automatically with file version control on all your devices.

Learn more

Central Management System

Manage multiple Synology NAS servers simultaneously on a centralized interface to increase business efficiency.

Learn more

Synology MailPlus

Secure, reliable, and private mail server solution with an intuitive and modern mail client.

Learn more

Collaboration Suite

Synology Office, Calendar and Chat guarantee a secure and high-performance private communication and user-friendly content organization.

Learn more
  • 1 Power button and indicator
  • 2 Beep off button
  • 3 Drive status indicator
  • 4 Drive tray
  • 5 PSU fan
  • 6 Power Port
  • 7 PSU indicator
  • 8 Console port
  • 9 1GbE RJ-45 port
  • 10 10GbE RJ-45 port
  • 11 USB 3.0 port
  • 12 Expansion port
  • 13 PCIe 3.0 slot
  • 14 Reset button

Notes:

  1. Please visit the performance page for test environment
  2. RS4017xs+ supports up to 2 Synology Expansion Unit RX1217/RX1217RP, sold separately.

Hardware Specifications

CPU

CPU

CPU Model Intel Xeon D-1541
CPU Architecture 64-bit
CPU Frequency 8-Core 2.1 (base) / 2.7 (turbo) GHz
Hardware Encryption Engine (AES-NI)

Memory

Memory

System Memory 8 GB DDR4 ECC UDIMM
Memory Module Pre-installed 8 GB (8 GB x 1)
Total Memory Slots 4
Memory Expandable up to 64 GB (16 GB x 4)
Notes
  • Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.

Storage

Storage

Drive Bays 16
Maximum Drive Bays with Expansion Unit 40
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Maximum Internal Raw Capacity 256 TB (16 TB drive x 16) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units 640 TB (256 TB + 16 TB drive x 24) (Capacity may vary by RAID types)
Maximum Single Volume Size*
  • 200 TB (32 GB RAM required, for RAID 5 or RAID 6 groups only)
  • 108 TB
Hot Swappable Drive
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 raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit. (Learn more)
  • Each internal volume (may consist of multiple drives) is expandble up to 108TB (with memory less than 32GB) or 200TB (with memory equal to or greater than 32GB).

External Ports

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

PCIe Expansion 2 x Gen3 x8 slots (x8 link)
Add-In-Card Support
Notes RS4017xs+ with M2D18 can only support M.2 SATA SSD. M.2 NVMe/AHCI PCIe SSD is not supported.

File System

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

Appearance

Form Factor (RU) 3U
Size (Height x Width x Depth) 132.3 mm x 482 mm x 656.5 mm
Weight 17.4 kg
Rack Installation Support* 4-post 19" rack (Synology Rail Kit - RKS1317)
Notes The rail kit is sold separately

Others

Others

System Fan 80 mm x 80 mm x 3 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
Power Recovery
Noise Level* 44.7 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 800 W
Redundant Power Supply
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 136.4 W (Access)
69.2 W (HDD Hibernation)
British Thermal Unit 465.7 BTU/hr (Access)
236.3 BTU/hr (HDD Hibernation)
Notes
  • Power consumption is measured when it's fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
  • Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%

Temperature

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

Certification

  • EAC
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI

Warranty

Warranty

5 Years
Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)

Environment

Environment

RoHS Compliant

Packaging Content

Packaging Content

  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 2
  • Quick Installation Guide X 1

Optional Accessories

Optional Accessories

  • D4EC-2666-8G DDR4 ECC UDIMM*
  • D4EC-2400-16G DDR4 ECC UDIMM*
  • Surveillance Device License Pack
  • Expansion Unit: RX1217/RX1217RP X 2
  • Synology Ethernet Adapter E10G17-F2
  • Synology Ethernet Adapter E10G18-T1
  • Synology Ethernet Adapter E10G18-T2
  • Synology M2D18 M.2 SSD adapter card
  • Synology Rail Kit Sliding - RKS1317
  • VS360HD
  • VS960HD
Notes If multiple memory modules of different frequency are installed in the same system, all memory modules will be operated at the lowest frequency available.

DSM Specifications

Storage Management

Storage Management

Maximum Internal Volume Number 256
Maximum iSCSI Target Number 256
Maximum iSCSI LUN 512
iSCSI LUN Clone/Snapshot, Windows ODX
SSD Read / Write Cache (White Paper)
SSD TRIM
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
  • RAID 10
Volume Expansion by Adding a HDD
  • RAID F1
  • JBOD
  • RAID 5
  • RAID 6
Global Hot Spare Supported RAID Type
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10

File Services

File Services

File Protocol CIFS/AFP/NFS/FTP/WebDAV
Maximum Concurrent CIFS/AFP/FTP Connections 2,000
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) 10,000
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication

Account & Shared Folder

Account & Shared Folder

Maximum Local User Accounts 16,000
Maximum Local Groups 512
Maximum Shared Folder 512
Maximum Shared Folder Sync Tasks 32

High Availability

High Availability

Synology High Availability

Log Center

Log Center

Syslog Events per Second 3,000

Virtualization

Virtualization

VMware vSphere 6 with VAAI
Windows Server 2012
Windows Server 2012 R2
Windows Server 2016
Citrix Ready
OpenStack

General Specifications

General Specifications

Networking Protocols SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
  • Chrome
  • Firefox
  • Edge
  • Internet Explorer 10 onwards
  • Safari 10 onwards
  • Safari (iOS 10 onwards)
  • Chrome (Android 6.0 onwards)
Supported Language English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文

Add-on Packages view the complete package list

Antivirus by McAfee (Trial)

Antivirus by McAfee (Trial)

Central Management System

Central Management System

Synology Chat

Synology Chat

Maximum Users 6,000
Notes
  • The number of concurrent HTTP connections for Synology 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

Cloud Station Server

Recommended Number of Hosted Files 3,000,000
Recommended Number of Concurrent Sync Clients 2,000 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Notes
  • The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time.
  • The maximum number of hosted files refers to the maximum number of files that can be indexed and hosted by the Cloud Station Server service. RAM expansion was not used during testing.
  • Non-encrypted shared folders were used during the aforementioned testing.

Document Viewer

Document Viewer

Download Station

Download Station

Maximum Concurrent Download Tasks 80

exFAT Access (Optional)

exFAT Access (Optional)

Synology MailPlus / MailPlus Server

Synology MailPlus / MailPlus Server

Free Email Accounts 5 (Licenses required for additional accounts)
Maximum Number of Concurrent Users 1,100
Maximum Server Performance 4,312,000 emails per day, approx. 131GB
Notes
  • The CPU and RAM usage were both under 80% when testing the maximum number of concurrent users.
  • 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

Media Server

DLNA Compliance

Moments

Moments

Facial Recognition
Subject Recognition
Auto Color & Rotate
Moments Select

PetaSpace

PetaSpace

Snapshot Replication

Snapshot Replication

Maximum Snapshots per Shared Folder 1,024
Maximum of System Snapshots 65,536

Surveillance Station

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 (1920x1080)
900 FPS @ 3M (2048x1536)
800 FPS @ 5M (2591x1944)
440 FPS @ 4K (3840x2160)
Total FPS (H.265)* 2700 FPS @ 720p (1280x720)
2700 FPS @ 1080p (1920x1080)
2340 FPS @ 3M (2048x1536)
1260 FPS @ 5M (2591x1944)
800 FPS @ 4K (3840x2160)
Total FPS (MJPEG)* 1200 FPS @ 720p (1280x720)
600 FPS @ 1080p (1920x1080)
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.

Synology Drive

Synology Drive

Recommended Number of Hosted Files 5,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
Recommended Number of Concurrent Sync Clients 2,000 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Notes
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Exceeding the limits above may result in longer response time in file operations.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.

Synology Office

Synology Office

Maximum Users 2,900
Notes
  • Multiple files were opened for testing and each file was edited by 30 users simultaneously.
  • 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

Video Station

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

Virtual Machine Manager

Virtual Machine Manager

Recommended Virtual Machine Instances 16 (Learn more)
Recommended Virtual DSM Number (Licenses required) 16 (including 1 Free License)
Notes
  • Virtual Machine Manager is not supported on hosts running Synology High Availability.
  • The specifications vary depending on system configuration and memory size.

VPN Server

VPN Server

Maximum Connections 40

Notes:

  • Model specifications are subject to change without prior notice.