Compact, robust, and scalable, RS816 comes with compelling and crucial features that growing businesses are looking for in a rackmount file server. With the dual LAN failover support, this 1U 4-bay rackmount NAS ensures continual availability, promising steadily growing success at a minimum cost.
Compact and agile, centralized on the business essentials with high efficiency
The 1U 4-bay rackmount NAS is only 12 inches deep, and can be deployed in a 2-post or wall-mount rack, ideal for businesses where space is at a premium. In the meanwhile, RS816 does not compromise any bit of its computing power, delivering excellent read and write performance with providing an impressive 142% increase in its encrypted writing performance compared to its predecessor.
Dual-core CPU with hardware encryption engine
Powered by an upgraded dual-core CPU with hardware encryption engine, RS816 delivers greatly advanced encryption performance in dual LAN bonding environments at over 148 MB/s reading, 81 MB/s writing, making sure every bit of your data is safe from prying eyes. Plus the built-in floating-point unit enables faster thumbnail creation when uploading a large amount of photos and videos, and the 1GB RAM significantly increases RS816's multi-tasking capability, making RS816 the optimal rackmount server for demanding businesses.
Flexible scalability up to eight drives, providing great capacity to businesses
Designed to satisfy growing businesses, RS816 can be easily scaled up to eight drives with Synology's RX415 expansion unit for an additional 32TB volume, merging into one big 64 TB volume, so businesses can start with a lower upfront cost and scale up storage capacity as demands grow while reducing time on storage management.
Dual LAN with failover and Link Aggregation support
RS816 is equipped with dual Gigabit Ethernet LAN ports capable of applying Link Aggregation technology; while enjoying automatic bandwidth optimization for each connected device, the dual LAN ports also support failover, ensuring continual network service even when one connection is down. RS816's hot-swappable design allows easy and risk-free hard drive replacement and maintenance, providing growing businesses with reliable redundancy mechanisms to keep operations running smoothly.
With just one RS816, it's possible to handle a vast amount of tasks. RS816 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 MailPlus, share printing capability with Printer Server, make RS816 act as a VPN server to access company's resources remotely, and more.
Effective backup solution
Synology RS816 can serve as a centralized backup target. Whether you are a Windows or Mac user, you can back up everything on your computer directly to Synology NAS using Cloud Station Backup. Whenever you modify a file, the changes are backed up to RS816 automatically. Mac users also enjoy native Apple Time Machine support. You can also back up data from your RS816 to another DiskStation, rsync servers, external drives, or even Amazon S3, Glacier cloud service, Microsoft Azure, SFR, and hicloud. Synology Hyper Backup allows you to schedule backup tasks and restore the server to any particular point in time, while minimizing storage consumption and processing time by saving only the specific data block that has been changed between versions.
Microsoft Windows 7 or later, Apple MacOS X 10.10 or later
3 years warranty
Rack-mountable - 1U
Total Storage Capacity
Max Supported Capacity
Installed Devices / Modules Qty
4 (installed) / 4 (max)
Processor / Memory
1 x Marvell ARMADA 385 1.8 GHz
Number of Cores
Max Supported Qty
1 GB DDR3
SATA 6Gb/s / eSATA
RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, JBOD
HDD - hot-swap
4 x 4 TB
Data Link Protocol
10Mb LAN, 100Mb LAN, GigE
Network / Transport Protocol
PPTP, L2TP, iSCSI, LPR/LPD, FTP
Remote Management Protocol
SNMP, Telnet, IPP, HTTP, HTTPS, TFTP, SSH
Network Services Compatibility
Microsoft Active Directory (AD), File Level Security (ACLs), Microsoft CIFS, Network File System (NFS), FTP, Apple File Protocol (AFP), HTTP, HTTPS, Web-based Distributed Authoring and Versioning (WebDAV), Calendaring Extensions to WebDAV (CalDAV), SFTP
Firewall protection, hardware encryption, LDAP support, wake on LAN (WOL), Syslog support, print server, IP address filtering, firmware upgradable, web server, backup server, download client, file sharing, anti-malware protection, Trivial File Transfer Protocol (TFTP) support, Access Control List (ACL) support, RADIUS support, SSH support, iTunes server, Samba support, FTP server, BitTorrent Client, e-mail server, UPnP Media Server, reset button, bandwidth control, surveillance station, PXE support, DLNA Media Server, Apple Time Machine compatible, e-mail notification, cloud backup, VPN Server, Dropbox support, anti-virus protection, Wi-Fi USB dongle support, Link Aggregation, Google Drive support, Amazon Cloud Drive support, Yandex Disk support, Microsoft OneDrive support
IP Cameras Supported
1920x1080, 2048x1536, 1280x800, 2591x1944
Expansion / Connectivity
4 (total) / 0 (free) x hot-swap - 2.5" / 3.5"
2 x Ethernet 1000Base-T - RJ-45 , 2 x USB 3.0 - Type A , 1 x eSATA , 1 x serial RS-232 (management) - DB-9
Wake on LAN, built-in 3 cooling fans, Google Cloud Print, scheduled power on/off
FCC Class A certified, RoHS, BSMI Class A
Internal power supply
AC 120/230 V (50/60 Hz)
Software / System Requirements
Storage Operating System
Synology DiskStation Manager
Microsoft Windows 7 or later, Apple MacOS X 10.10 or later
Service & Support
Limited warranty - 3 years
Min Operating Temperature
Max Operating Temperature
Humidity Range Operating
5 - 95%
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