RS18017+

RackStation RS18017xs+

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

Powerful storage solution

RS18017xs+ is built for flexible storage management with ultra-high performance at over 568,000 sequential read IOPS and 4,800 MB/s sequential read throughput. DDR4 ECC RDIMM and 10GbE connectivity guarantees data accuracy and performance for mission-critical environment.

CPU
Intel® Xeon® D-1531 6-core processor

RAM options
16 GB DDR4 ECC RDIMM, up to 128 GB

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

Chassis
2U chassis design, 12 SAS/SATA drive bays

Robust scalability and reliability

RS18017xs+ provides flexible storage scalability with the free combination of Synology Expansion Unit RX1217sas and RX2417sas2. Up to 7 Expansion Units can be connected, allowing business to start small and scale big.

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 Services(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.

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.

Next-generation file system for better data protection

The Btrfs file system introduces advanced storage technologies and optimized snapshots to prevent data corruption and reduce maintenance overhead. While ensuring high-level data integrity, it also offers flexible, efficient data protection and recovery tools.

Flexible Shared Folder / User Quota System provides comprehensive quota control on 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 accelerates data recovery, providing more flexibility for businesses

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

Snapshot Replication

Provides schedulable and instantaneous data protection for shared folders and virtual machines on iSCSI LUNs in the event of disaster.

Synology High Availability

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

Hyper Backup

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

CMS

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

Cloud Station Suite

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

MailPlus

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

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 16 GB DDR4 ECC RDIMM
Memory Module Pre-installed 16GB (1 x 16GB)
Total Memory Slots 4
Memory Expandable up to 128GB (32 GB x 4)
Storage  
Drive Bays 12
Maximum Drive Bays with Expansion Unit 96 (RX1217sas) / 180 (RX2417sas)
Compatible Drive Type* (See all supported drives) 3.5″ SATA HDD
  2.5″ SATA HDD
  2.5″ SATA SSD
  3.5″ SAS HDD
  2.5″ SAS HDD
  2.5″ SAS SSD
   
Maximum Internal Raw Capacity 144 TB (12 TB drive x 12) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units 1152 TB (144 TB + 12 TB drive x 84) (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 1
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 482 mm x 724 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  
Power Recovery  
Noise Level* 49.8 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* 141.96 W (Access)
  77.23 W (HDD Hibernation)
British Thermal Unit 484.39 BTU/hr (Access)
  263.52 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 EAC
  VCCI
  CCC
  RCM
  KC
  FCC
  CE
  BSMI
   
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 10KByte 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
Drive  
Maximum Number of Synced Files 3,000,000 / single file reaction time 244 ms
Maximum Number of Concurrent Connections for PC Clients 1800
Notes The Btrfs file system was used for the purpose of testing.
  The maximum number of concurrent connections refers to the maximum number of connections that could be maintained when the maximum number of synced files was reached.
  File reaction time refers to the preparation time required for other devices to start downloading a 10KByte file from a Synology NAS after the file has been added to the NAS.
  For tested models with expandable memory, the maximum amount of RAM was installed.
  Non-encrypted shared folders were used during the aforementioned testing.
   
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  
Moments  
Facial recognition  
Subject recognition  
Office  
Maximum Users 3000
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
   
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 (1280×720)
  2250 FPS @ 1080p (1920×1080)
  1350 FPS @ 3M (2048×1536)
  800 FPS @ 5M (2591×1944)
  800 FPS @ 4K (3840×2160)
Total FPS (H.265)* 2700 FPS @ 720p (1280×720)
  2700 FPS @ 1080p (1920×1080)
  2250 FPS @ 3M (2048×1536)
  1350 FPS @ 5M (2591×1944)
  1350 FPS @ 4K (3840×2160)
Total FPS (MJPEG)* 1050 FPS @ 720p (1280×720)
  525 FPS @ 1080p (1920×1080)
  350 FPS @ 3M (2048×1536)
  220 FPS @ 5M (2591×1944)
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) 12 (including 1 Free License) (Learn more)
Notes Virtual Machine Manager is not supported on hosts running Synology High Availability.
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