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 844,000 sequential read IOPS and 5,900 MB/s sequential read throughput1. DDR4 ECC UDIMM and 10GbE connectivity guarantees data accuracy and performance for mission-critical environment.

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 RX1217RP2, providing a total drive number of 40 without disrupting host services.

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

5 year warranty

Synology's 5-year limited warranty provides hardware replacement and technical support via email and telephone services, maximizing your enterprises' return on investment.

Synology Replacement Service (SRS)

SRS provides free shipment of replacement units as early as the next business day in selected regions3. Check service availability here.

Powered by Synology DSM

Synology High Availability

Ensures seamless service transition between clustered servers in the event of a server failure.

Learn more

Hyper Backup

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

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Cloud Station Suite

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

Learn more

CMS

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

Learn more

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.
  3. Synology guarantees SRS response within the next business-day, and the actual shipping and turnover time is a "best-effort" based on replacement availability.
Hardware Specifications
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
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 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 192 TB (12 TB drive x 16) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units 480 TB (192 TB + 12 TB drive x 24) (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
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)
  • Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 108TB or 200TB if upgraded to 32GB RAM or more.
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) 132.3 mm x 482 mm x 656.5 mm
Weight 17.4 kg
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 2 x 800W
AC Input Power Voltage 100V to 240V 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)
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
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
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
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 6000
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.
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 800 (Btrfs) / 900 (EXT4)
Maximum Server Performance 3,618,000 (Btrfs) / 2,738,000 (EXT4) emails per day, approx. 110.4 GB (Btrfs) / 83.6 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)
440 FPS @ 4K (3840x2160)
Total FPS (H.265)* 2700 FPS @ 720p (1280x720)
2700 FPS @ 1080p (1920×1080)
2340 FPS @ 3M (2048x1536)
1260 FPS @ 5M (2591x1944)
800 FPS @ 4K (3840x2160)
Total FPS (MJPEG)* 1200 FPS @ 720p (1280x720)
600 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
Virtual Machine Manager
Maximum Virtual DSM Number (Licenses required) 16 (including 1 Free License) (Learn more)
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
  • VS960HD
  • Synology RKS1317 - Rail Kit Sliding
  • Synology Ethernet Adapter E10G15-F1
  • Synology Ethernet Adapter E10G17-F2
General
Networking Protocols
  • CIFS
  • AFP
  • NFS
  • FTP
  • WebDAV
  • CalDAV
  • iSCSI
  • Telnet
  • SSH
  • SNMP
  • VPN (PPTP, OpenVPN)
Windows AD Domain Integration Domain Users login via Samba/AFP/FTP/File Station
HDD Management
  • HDD Hibernation
  • S.M.A.R.T.
  • Dynamic Bad Sector Mapping
Security
  • FTP over SSL/TLS
  • IP Auto-Block
  • Firewall
  • Encrypted Network Backup over Rsync
  • HTTPS Connection
Utilities Synology Assistant
Supported Clients
  • Windows 7 and 10
  • Mac OS X 10.11 onward
Supported Browsers
  • Chrome
  • Firefox
  • 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, 日本語, 한국어, 繁體中文, 简体中文
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