RackStation RC18015xs+

Uncompromising reliability, unyielding data protection

Featuring a high-availability design, next-generation snapshot technology, and massive scalability up to 180 drives, RC18015xs+ and RXD1215sas deliver the secure, reliable, and superior performance storage solution for enterprises seeking business continuity and point-in-time data recovery.

RC18015xs+

High-availability cluster design

RC18015xs+ and RXD1215sas are specifically designed to work together as a high-availability cluster — requiring two RC18015xs+ and at least one RXD1215sas expansion unit. By combining the two computing servers and multiple storage units into a single high-availability cluster, RC18015xs+ and RXD1215sas deliver 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. For technical details and best practices, please see the High Availability for RC18015xs+ White Paper.

Massive scalability up to 180 drives

Up to fifteen RXD1215sas can be connected to the dual RC18015xs+ computing nodes, accommodating massive scalability up to 180 drives and maximum raw storage beyond 1PB. The shared storage architecture eliminates the need for data replication over the network, in addition to drastically reducing deployment costs.

15Expansion units
180Drive bays
1440TB raw storage

Blazing fast performance and throughput

RC18015xs+ delivers superior performance of over 2,270 MB/s throughput and 355,400 IOPS when using dual 10GbE connections bonded with Link Aggregation. Equipped with 8GB ECC RAM (upgradeable up to 32GB), the RC18015xs+ ensures enterprise-level data accuracy and speed for your mission critical tasks.

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. In the event of component failure, the system continues operating normally while replacement parts are obtained and installed.

Ready for the 10GbE generation

In addition to the default four Gigabit Ethernet ports (plus one dedicated port for the Heartbeat), RC18015xs+ comes with one PCI Express 3.0 x8 slot (running at x8 mode), accommodating installation of one 10GbE network interface card (NIC) for maximized bandwidth.

5 year warranty

Synology RC18015xs+ is backed with Synology's 5-year limited warranty. With technical support and hardware replacement service, the five-year warranty maximizes your enterprises' return on investment. For the entire duration, you will enjoy technical support via e-mail and telephone.

Award winning OS - DiskStation Manager

Synology DiskStation Manager (DSM) is a sleek, browser-based operating system running on every DiskStation and RackStation, which makes managing your Synology NAS a breeze. Featuring an intuitive user interface, DSM makes accessing and sharing your data smarter and simpler. Synology's Package Center lets you download and install useful add-on packages designed specifically for individual or business needs, meaning you can enjoy more entertainment in your life or better productivity at work.Learn more

Next-generation data protection and integrity

When dealing with large-scale data storage, businesses require a solution that offers reliable backup and prevents file corruption. With support for the next-generation Btrfs file system, RC18015xs+ ensures information is stored with a high level of data integrity, while providing flexible and efficient data protection tools. See the white paper for more technical details regarding Btrfs and data protection.
Learn more about the benefits of using Btrfs

Fast and efficient snapshots

Snapshots preserve the history of a shared folder allowing you to save up to 1024 backup copies for point-in-time recovery. Snapshots can be automatically captured up to every 5 minutes, without noticeably impacting system performance.

Metadata mirroring and survivability

Btrfs file system stores two copies of critical metadata on a volume, improving the availability and ensuring the integrity of your file system.

Corruption detection and correction

Btrfs generates checksums for data and metadata, and then verifies the checksums during each read process to ensure the integrity of the filesystem and files. If the file system discovers a mismatch, metadata will be repaired to keep file system consistent. In the meantime, corrupted files will be reported and logged.

Customizable quotas for shared folders

With Btrfs, you can specify a storage limit for each shared folder, making it possible to precisely control space consumption when multiple teams or departments save files on the same Synology NAS server.

Fit into business environments easily

With the support of Windows AD, LDAP, and Domain Trust, RC18015xs+ enables seamless account integration. The User Home feature can automatically create a "home" folder for every user account to minimize the administrator's effort in repeatedly creating "home" folders for all accounts. Windows ACL support on RC18015xs+ allows IT administrators to fine tune access controls and set up privileges to files and folders on RC18015xs+ through the familiar Windows user interface. With compatibility for major protocols, RC18015xs+ can eliminate server configuration overhead and enhance IT administrators’ efficiency. Learn more

Seamless storage solution for virtualization environments

RC18015xs+ provides seamless storage solutions for virtualization environments, including VMware, Citrix, and Microsoft Hyper-V. With VMware vSphere® & VAAI integration, RC18015xs+ helps offload specific storage operations and optimizes computation power in VMware environments. Windows ODX support speeds up data manipulation as the data transfer is offloaded. iSCSI also lets SMB users consolidate storage into data center storage arrays while providing hosts with the illusion of locally-attached disks. Learn more

Unified storage system

RC18015xs+ enables businesses to cost-effectively manage multi-protocol data by integrating file-level (NAS) and block-level (SAN) storage into one unified storage system. Files can be shared across Windows®, Mac®, and Linux® platforms seamlessly with comprehensive network protocol support (CIFS/SMB, AFP, and NFS). RC18015xs+ provides a cost-effective iSCSI solution, allowing large scale businesses to consolidate storage into data center storage arrays. With thin provisioning available for file-level iSCSI LUN, you can maximize storage utilization by oversubscribing provisions and grow storage space as needed. Learn more

Synology CMS (Central Management System)

For enterprises with more than one Synology NAS server, CMS offers the flexibility and convenience for IT administrators to manage all of them from a single point of entry. Through a simple interface, you can obtain a clear overview on resource consumption and logs, helping you identify any issue right away. With group policies, CMS can do much more for your daily tasks. Once a NAS joins a group, it will automatically adopt its rules and behave as intended, without extra configuration. Learn more

Increase business productivity with cloud solutions

With comprehensive cloud solutions, RC18015xs+ lets you create your own private cloud easily. Cloud Station is the perfect package to sync files across multiple devices. Files can be edited in offline mode and later synced to Cloud Station, which keeps up to 32 historical versions, allowing you to restore a file back to previous version or recover deleted files. With the mobile app DS cloud, any change made to a file is automatically synced to your smartphones and tablets. For distributed enterprises, Synology's 2-way sync between different DiskStations ensures employees at different locations share the same information in real-time. IT administrators can handpick individual folders that they want to sync to different devices, manually or automatically based on file format and size. Folders synced by Cloud Station can be encrypted on DSM — no one will be able to access its content without your private key. Learn more

Secure your data

RC18015xs+ offers advanced security measures to protect you from potential security holes. Security Advisor analyzes system settings, password strength, network preferences and removes any possible malware. AppArmor blocks malicious programs from accessing unauthorized system resources. You can also customize the trust level in Package Center to avoid installing packages from untrusted sources, safeguarding your NAS from unknown or tampered files. In addition, RC18015xs+ provides other security add-ons, such as AES encryption, 2-Step verification, IP block & allow list, Antivirus packages, firewall, and DoS attack prevention. Learn more

Network security
Antivirus
AES 256-bit encryption
2-Step verification
Trust level

Notes:
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  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. RXD1215sas Expansion Units are purchased separately.
  3. Raw storage capacity varies depending on hard drive model and individual settings. Hard drives are purchased separately. Learn more about the compatibility of hard drives, please click here.
  4. The performance figures vary in different environments.
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 4 GB x 2
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 HDD 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
USB 3.0 Port 2
Expansion Port 1
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
RJ-45 1GbE LAN Port 4 (with Link Aggregation / Failover support) + 1 for Heartbeat
Wake on LAN/WAN
PCIe Slot for Network Card (See more) 1 x Gen3 x8 slot (x8 link)
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
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
RAID Group
Supported RAID Type
  • 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 1
  • RAID 5
  • RAID 6
Volume Expansion by Adding a HDD
  • RAID 5
  • RAID 6
  • JBOD
Global Hot Spare Supported RAID Type
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
SSD Support
SSD Read/Write Cache (White Paper)
SSD TRIM
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 1600
Notes
  • 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 2000
Maximum Concurrent File Transfers (with RAM expansion) 10000
Docker DSM
Maximum Docker DSM Number (Licenses required) 45 (including 1 Free License) (Learn more)
Document Viewer
Download Station
Maximum Concurrent Download Tasks 80
exFAT Access (optional)
HiDrive Backup
MailPlus / MailPlus Server
Free Email Accounts 5 (Licenses required for additional accounts)
Recommended MailPlus Client Number Up to 500
Maximum Server Performance 932,000 emails per day, approx. 30.1 GB
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 testing the recommended number of clients.
  • 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
  • Synology RKS1314 - 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 or above
  • Mac OS X 10.10 or above
Supported Browsers
  • Chrome
  • Firefox
  • Internet Explorer 9 or later
  • Safari 8 or later
  • Safari (iOS 7.0 or later on iPad)
  • Chrome (Android 4.0 on tablets)
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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