Synology RackStation NAS RS4017xs+ 16-Bay 3U, 2x PSU (8GB RAM) (no RAIL KIT) + 10GbE
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 690,000 sequential read IOPS and 4,900 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 - 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) Free next business-day shipping1 for replacement units. SRS expedite the process of replacing defective products and minimize service downtime. Comprehensive business solutions Seamlessly integrate the Synology NAS to your business environments with comprehensive productivity tools.
High Availability Ensures seamless transition between clustered servers in the event of server failure with minimal impact to applications. Learn more
Hyper Backup Minimize storage space required for backing up data in multiple versions with block-level incremental backup and cross-version deduplication. Learn more
Cloud Station Suite Automatic cross-platform data synchronization with file version control. Learn more
CMS Manage multiple Synology NAS servers simultaneously through a centralized interface to increase administrative efficiency and flexibility. Learn more
MailPlus Set up a secure, reliable and private mail server with stylish and intuitive user interface. Learn more
Collaboration Suite Synology Office, Calendar and Chat guarantee a secure and high-performance private communication and user-friendly content organization. Learn more Notes: Please visit the performance page for test environment RS4017xs+ supports up to 2 Synology Expansion Unit RX1217/RX1217RP, sold separately. Actual shipping and turnover time is dependent on location and is a “best-effort” based on replacement availability. Next business-day shipping is not guaranteed for all replacements, locations, or at all times. For detailed information on the service, please visit Synology Replacement Service (SRS) website at https://srs.synology.com.
Intel Xeon D-1541
8-Core 2.1 (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*
3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
Maximum Internal Raw Capacity
160 TB (10 TB HDD x 16) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units
400 TB (10 TB HDD x 40) (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.
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
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.
USB 3.0 Port
exFAT Access is purchased separately in Package Center.
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%
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
File Sharing Capacity
Maximum Local User Accounts
Maximum Local Groups
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
Antivirus by McAfee (Trial)
Central Management System
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 Server
Maximum Concurrent File Transfers
Maximum Concurrent File Transfers (with RAM expansion)
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.