RackStation RC18015xs+

Performance Compatibility Download Center Compare
Performance Compatibility Download Center Compare

RackStation RC18015xs+

Uncompromising reliability, unyielding data protection

High-availability cluster design

By combining two RC18015xs+ and at least one RXD1215sas, the Synology high-availability cluster1 delivers unyielding reliability and data availability. With the active/passive structure, services are automatically switched over to one server if the other unexpectedly goes offline, helping your business avoid costly downtime.

CPU

Intel® Quad-core up to 3.7 GHz

Memory

8GB DDR3 ECC RAM, up to 32GB

Ultra Performance

2,153.26 MB/s reading

Scalability

Up to 180 drives with 15 RXD1215sas

Hardware redundancy enhances system uptime

In addition to the active/passive architecture, RC18015xs+ is equipped with redundant hardware components, such as power supply units, internal system fans, and LAN ports, to optimize service continuity.

Scalable to 10GbE, and beyond

The PCIe 3.0 slot allows for faster networking as you expand your infrastructure. Together with the built-in quad Gigabit ports, RC18015xs+ offers comprehensive connectivity options for link aggregation and failover configurations.

Complete iSCSI and virtualization solutions

Synology iSCSI storage supports most virtualization solutions including VMware vSphere, Microsoft Hyper-V, Citrix Xen Server, and OpenStack Cinder, to enhance work efficiency. Create and manage virtual machines running multiple operating systems such as Windows, Linux, and DSM using Virtual Machine Manager. Learn more

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

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 regions2. Check service availability here.

Powered by Synology DSM

CMS

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

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MailPlus

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

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Hyper Backup

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

Learn more

Office

Collaborate on spreadsheets and documents on your private cloud.

Learn more

Snapshot Replication

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

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Security

Comprehensive built-in security tools are constantly updated to tackle evolving threats and protect your devices.

Learn more
  • 1 LED indicator
  • 2 Beep off button
  • 3 Power button and indicator
  • 4 Power port
  • 5 PSU indicator
  • 6 Heartbeat LAN port
  • 7 USB 3.0 port
  • 8 1GbE RJ-45 port
  • 9 Console port
  • 10 SAS OUT port
  • 11 PCIe 3.0 slot
  • 12 Reset button

Notes:

  1. RC18015xs+ and RXD1215sas are designed to work as a high-availability cluster. Two RC18015xs+ and at least one RXD1215sas expansion unit are required to configure and operate.
  2. 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 E3-1230 v2
CPU Architecture 64-bit
CPU Frequency Quad Core 3.3 GHz
Hardware Encryption Engine (AES-NI)
Memory
System Memory 8 GB DDR3 ECC
Memory Module Pre-installed 8GB (2 x 4GB)
Total Memory Slots 4
Memory Expandable up to 32 GB (8 GB x 4)
Storage
Maximum Drive Bays with Expansion Unit 180
Compatible Drive Type* (See all supported drives)
  • 3.5" SAS HDD
  • 2.5" SAS HDD
  • 2.5" SAS SSD
Maximum Raw Capacity with Expansion Units 1800 TB (10 TB drive x 180) (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
External Ports
RJ-45 1GbE LAN Port 4 (with Link Aggregation / Failover support) + 1 for Heartbeat
USB 3.0 Port 2
Expansion Port 1
PCIe
PCIe Expansion 1 x Gen3 x8 slot (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) 44 mm x 430 mm x 480 mm
Weight 7.3 kg
Others
System Fan 40 mm x 40 mm x 6 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
Power Recovery
Noise Level* 48 dB(A)
Scheduled Power On/Off
Wake on LAN/WAN
Power Supply Unit / Adapter 2 X 150W
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 60.16 W (Access)
British Thermal Unit 205.27 BTU/hr (Access)
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 When upgrading RAM to more than 24GB, the original 4GB RAM modules must be removed.
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 5 with VAAI
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) 1,000,000 / single file reaction time 542 ms
Maximum Number of Synced Files (ext4) 1,000,000 / single file reaction time 210 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.
Virtual Machine Manager
Maximum Virtual DSM Number (Licenses required) 8 (including 1 Free License) (Learn more)
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 500 (Btrfs) / 500 (EXT4)
Maximum Server Performance 2,166,000 (Btrfs) / 2,418,000 (EXT4) emails per day, approx. 66.1 GB (Btrfs) / 73.8 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
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)
1080 FPS @ 1080p (1920×1080)
650 FPS @ 3M (2048x1536)
500 FPS @ 5M (2591x1944)
Total FPS (MJPEG)* 900 FPS @ 720p (1280x720)
360 FPS @ 1080p (1920×1080)
250 FPS @ 3M (2048x1536)
150 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 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
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 (4GB X 2) ECC RAM Module Kit
  • 16GB (8GB X 2) ECC RAM Module Kit
  • Expansion Unit: RXD1215sas X 15
  • VS360HD
  • VS960HD
  • Synology RKS1317 - Rail Kit Sliding
  • Synology RKM114 - Rail Kit Mounted
  • 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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