Product Features
  • Quad-Core CPU
  • USB 3.0 and eSATA
  • Scalability up to 8 Drives
  • Encrypted Data Transmission
  • SSD Cache Technology
Our Price $1,995.00

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The RackStation RS815+ 4-Bay NAS Server from Synology is a reliable, high performance network attached storage solution for SMB environments seeking strong performance that is essential for their data transmission needs. This unit has four drive bays, each of which natively supports 3.5" and 2.5" SATA III 6 Gb/s and SATA II 3 Gb/s hard drives and SSDs. Should users need to expand the overall capacity of their RS815+, the optional RX415 expansion unit offers an additional four drive bays that are identical to those offered by the RS815+.

The Rackstation RS815+ is powered by a 2.4 GHz Intel Atom C2538 Quad-Core processor, which will allow you to run multiple functions simultaneously. The built-in 2GB of DDR3 RAM will allow quick access to frequently-used files and programmes  and may also be upgraded to a total of 6GB by installing a 4GB module into the available memory slot. Network connectivity is achieved via the 4 x Gigabit Ethernet ports with failover support, which helps to provide redundancy in the case that a LAN connection malfunction occurs on one port. In addition, link aggregation, powered by four LAN ports, helps to increase connection speeds beyond the limits of a single network port or cable.

The RackStation RS815+ runs on the DiskStation Manager (DSM) operating system, which offers helps simplify managing your RS815+, as well as accessing and sharing data. Synology's Package Centre also lets users download and instal add-on packages that are designed for individual or business needs. A variety of RAID modes are supported, which help provide users with data redundancy, speed, or a combination of both. Supported RAID modes include RAID 0, 1, 5, 6, 10, Basic, Synology Hybrid RAID, and JBOD.

The RackStation RS815+ operates on 100-240 VAC at 50/60 Hz and includes an accessory pack and an AC power cord.

Key Features

Quad-Core CPU
The RS815+ is powered by a quad-core CPU running at 2.4 GHz. Combined with 2GB of DDR3 RAM (expandable to 6GB), it delivers average 389.03 MB/s read speeds and 361.33 MB/s write speeds. With this baseline performance and 2GB DDR3 RAM that is expandable to 6GB, the RS815+ is a powerful 1RU NAS server for mission-critical tasks of SMB

USB 3.0 and eSATA
The RS815+ helps optimises your working experiences by enabling faster and more efficient data transfers. To help ensure scalability, the RS815+ provides an eSATA and two USB 3.0 interfaces in the back to speed up data transfers with Synology expansion units and external hard drives

Encrypted Data Transmission with AES-NI
The ${Model} features a hardware encryption engine, which offloads encryption calculation tasks away from the main CPU. That means files and folders are encrypted on the fly without compromising the performance, delivering encrypted data transmission speeds over 388.66 MB/s reading and 158.9 MB/s writing

Scalability up to 8 Drives
When your data storage is nearing its limits, the RS815+ can be connected to a dedicated RX415 expansion unit, letting you scale up to 8 drives for additional storage on the fly. The RX415 connects through an eSATA cable with specially-designed locking connectors

Quad LAN Ports for Failover and Link Aggregation Support
To help ensure your business continuity, the RS815+ features four built-in Gigabit LAN ports supporting failover, which is engineered to provide reliable redundancy even if a LAN connection malfunction occurs on one port, reducing the chance of service disruption and costly downtime. In addition, Link Aggregation powered by four LAN ports helps increase connection speeds beyond the limits of a single network cable or port.

SSD Cache Technology
The RS815+ enables the combination of hard drives and SSD cache, boosting throughput efficiently while minimising cost per gigabyte. With a full SSD cache support, the RS815+ helps offer a reduction in I/O latency

DiskStation Manager (DSM) OS
Synology DiskStation Manager (DSM) is a browser-based operating system which makes managing your Synology NAS simple. Featuring a user-friendly interface, DSM makes accessing and sharing your data smarter and simpler. Synology's Package Centre lets you download and instal 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

Storage for Virtualization Environments
The RS815+ provides seamless storage solutions for virtualization environments, including VMware, Citrix, and Microsoft Hyper-V. With VMware vSphere 5 & VAAI integration, the RS815+ helps offload specific storage operations and optimises 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 centre storage arrays while providing hosts with the illusion of locally-attached disks

Business Environment Integration
With the support of Windows AD, LDAP, and Domain Trust, the RS815+ enables seamless account integration. The User Home feature can automatically create a "home" folder for every user account to minimise the administrator's effort in repeatedly creating "home" folders for all accounts. Windows ACL support on the RS815+ allows IT administrators to fine tune access controls and set up privileges to files and folders on the RS815+ through the familiar Windows user interface. With compatibility for major protocols, the RS815+ can help eliminate server configuration overhead and enhance IT administrators' efficiency

Optimise Storage Management
With Synology's Storage Manager, the RS815+ allows for flexible storage deployment and utilisation. You can optimise RAID configurations with Synology Hybrid RAID (SHR) while providing redundant data protection. Other features such as multiple volumes on a single RAID and Global Hot Spare also help enhance management efficiency and fit deployment of any kind

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 user-friendly interface, you can obtain an overview on resource consumption and logs, helping you identify any issue right away. With group policies, CMS can do more for your daily tasks. Once a NAS joins a group, it will automatically adopt its rules and behave as intended, without extra configuration

All-in-One Server
With just one RS815+, it's possible to handle a vast amount of tasks. The ${Model} helps your company gain a competitive edge by acting as your multi-function server. Directory Server provides LDAP service, while DNS and DHCP packages allow you to host a domain name server and automate network IP assignment at no extra cost. With Synology's Proxy Server, you can regulate content access and monitor who can access which website while saving bandwidth. You can host up to 30 websites with Web Station, safeguard the office environments with Surveillance Station, send and receive mails using your own email domain with Mail Station, share printing capability with Printer Server, make the ${Model} act as a VPN server to access company's resources remotely, and more

Business Continuity
Uninterrupted availability is a critical goal for all businesses. The RS815+ supports Synology High Availability (SHA) technology which combines an active and passive server into one cluster, with the former always mirrored to the latter. The Heartbeat mechanism detects regular "heartbeats" between the two servers. If the main server encounters unexpected downtime, the passive server immediately takes over. With multiple LAN ports, the RS815+ also helps ensure redundancy in the event of unexpected network failure

Backup Solutions
The Backup & Replication feature allows you to back up data from one RS815+ to another DiskStation, or rsync-compatible servers. It also provides the flexibility to restore the server to any particular point in time, and back up modified blocks to optimise storage and processing time. In addition, the RS815+ offers you the capability to back up iSCSI LUNs with no extra charge. Businesses can enjoy efficient backup performance with "Point-in-time copy" technology for data consistence and incremental backup to speed up processing time

Cloud Solutions
With comprehensive cloud solutions, the RS815+ lets you create your own private cloud easily. Cloud Station is a package used 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 helps ensure 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

Enjoy file sharing across Windows, Mac, and Linux platforms, as the RS815+ offers network protocol support including FTP, SMB2, AFP, NFS, and WebDAV. With Windows AD and LDAP integration, the RS815+ can fit into virtually any existing network environment. You also won't worry about missing files with the Recycle Bin feature which is supported on AFP, CIFS, File Station, and WebDAV. All files deleted in a shared folder will be automatically moved into the Recycle Bin

Secure Your Data
The RS815+ offers security measures to help protect you from potential security holes. Security Advisor analyses system settings, password strength, network preferences, and removes any possible malware. AppArmor blocks malicious programmes from accessing unauthorised system resources. You can also customise the trust level in Package Centre to avoid installing packages from untrusted sources, safeguarding your NAS from unknown or tampered files. In addition, the RS815+ provides other security add-ons, such as AES encryption, 2-Step verification, an IP block & allow list, Antivirus packages, firewall, and DoS attack prevention

Synology QuickConnect
Synology aims to provide you with a convenient way to enjoy all the services on your RS815+. With Synology QuickConnect, you don't have to deal with difficult DDNS setups. QuickConnect helps to free you from complicated router configurations and port-forwarding, so your entertainment and work files can be accessed on virtually any computer, laptop, or mobile devices

File Station
File Station is a fast and secure feature for sharing and managing your files stored on RS815+, whether you are using a Mac or PC. Advanced filters help make it easy to search for documents, photos, or videos. With built-in FTP or email clients, the RS815+ lets you organise and share files through a web application. You can even share files and folders with others by simply sending a link. Files can also be reached on mobile devices via the companion mobile app DS file. HTTPS, SSL/TSL encryption, and link expiry dates also help ensure that file sharing over the Internet is secure

Optional Accessories

  • Optional available accessories include:
  • Remote
  • Camera Licence Pack
  • 4GB DDR3 RAM Module
  • Expansion Unit: RX415 x 1
  • Synology VS240HD High-Performance Surveillance Solution
  • Synology RKS1314 - Rail Kit Sliding
  • Synology RKM114 - Rail Kit Mounted
CPU Model
2.4 GHz Intel Atom C2538 Quad-Core
Floating Point
Hardware Encryption Engine
Yes (AES-NI)
System Memory
Memory Module Pre-Installed
2 GB x 1
Total Memory Slots
Memory Expandable up to
Not specified by manufacturer
Drive Bays
Maximum Drive Bays with Expansion Unit
Compatible Drive Types
Hot Swappable Drives
USB 3.0
RJ-45 1GbE LAN Port
4 (with Link Aggregation / Failover support)
Internal Drives
External Drives
Wake on LAN/WAN
System Fan
40 mm x 40 mm x 3 pcs
Wireless Support (Dongle)
Noise Level
25.3 dB(A)
Power Recovery
Scheduled Power On/Off
Power Supply Unit / Adapter
250 W
AC Input Power Voltage
100 to 240 V AC
Power Frequency
50/60 Hz, Single Phase
Power Consumption
36.78 W (Access)
20.57 W (HDD Hibernation)
Operating Temperature
5 to 35°C
Storage Temperature
-20 to 60°C
Relative Humidity
5 to 95%
FCC Class B, COE Class B, BSMI Class B
Maximum File System Size
108 TB
Maximum Internal Volume Number
Maximum iSCSI Target Number
Maximum iSCSI LUN
iSCSI LUN Clone/Snapshot, Windows ODX
Supported RAID Type
* Synology Hybrid RAID
* Basic
* RAID 0, 1, 5, 6, 10
RAID Migration* Basic to RAID 1
* Basic to RAID 5
* RAID 1 to RAID 5
* RAID 5 to RAID
Volume Expansion with Larger HDDs
* Synology Hybrid RAID
* RAID 1, 5, 6
Volume Expansion by Adding a HDD
* Synology Hybrid RAID
* RAID 5
* RAID 6 (with expansion unit)
Global Hot Spare Supported RAID Type
* Synology Hybrid RAID
* RAID 1
* RAID 5
* RAID 6 (with expansion unit)
* RAID 10 (with expansion unit)
SSD Read/Write Cache
Maximum User Accounts
Maximum Groups
Maximum Shared Folders
Maximum Shared Folder Sync Tasks
Maximum Concurrent CIFS/AFP/FTP Connections
Windows Access Control List (ACL)
NFS Kerberos Authentication
High Availability Manager
Syslog Events per Second
VMware vSphere 5 with VAAI
Windows Server 2012
Windows Server 2012 R2
Citrix Ready
RoHS Compliant
Dimensions44.00 x 430.50 x 457.50 mm
Weight6.73 kg
Synology RackStation RS815+ 4-Bay NAS Server
RM Product #:
USB 3.0
Power Method:
AC Powered