This high-performance, expandable NAS device provides simpler data management and optimized performance virtualization environments for larger enterprises.

High-speed, scalable storage server
The Synology RS3618xs provides a reliable, high-performance network storage solution for large enterprises looking for a device that can handle even the most demanding business needs. The tool simplifies data management, optimizes virtualization environments, and rapidly expands storage capacity with minimal investment in installation and maintenance.

- CPU: quad-core, max. 2.7 GHz
- RAM (multiple options): 8 GB DDR4 ECC UDIMM, expandable up to 64 GB
- Network: 4 1 Gigabit Ethernet ports, support for optional 10 Gigabit Ethernet network adapters
- Scalability: up to 36 drives can be expanded with the RX1217/RX1217RP unit

Ready for 10GbE speeds and beyond
With PCIe 3.0 slots, you can make your network faster when expanding your infrastructure. In addition to the built-in four gigabit ports, the RS3618xs also offers many connection options to support the Link Aggregation function and failover.

The most modern backup solution
The RS3618xs includes several backup applications based on powerful data storage technologies with an easy-to-learn user interface to protect your data stored on various devices.
- Active Backup for Server: An agent-free backup solution that protects your data stored on Windows and Linux servers with the SMB and Rsync protocols and helps keep installation and management costs low.
- Hyper Backup: A comprehensive solution to back up your data to a local shared folder, an external device, another Synology NAS device, an rsync server, or even a public cloud.
- Desktop backup: With Cloud Station Backup, you can protect your computer as well. Using Time Machine, you can easily back up data stored on your macOS device to your Synology NAS device.
- Active Backup for Office 365/G Suite: On-site backup solution with a central dashboard. Make data storage even more efficient with single-copy storage and block-level deduplication.

Certified storage virtualization solutions
Synology iSCSI storage fully supports most virtualization solutions, so you can work efficiently with this easy-to-use interface. The integration of VMware vSphere 6 and VAAI helps offload storage operations and optimizes computing performance. The Windows Offloaded Data Transfer (ODX) function speeds up data transfers and migrations. With OpenStack Cinder support, you can even turn your Synology NAS device into a block-based storage component.

Next-generation file system for enhanced data protection
The Btrfs file system uses the most advanced storage technologies and optimized snapshots to prevent data loss and minimize the need for maintenance. In addition to a high level of data integrity, the system also offers flexible and effective data protection and recovery tools.
- Flexible shared folder/user quota system provides extensive quota control for all user accounts and shared folders
- The Snapshot Replication function provides scheduleable and storage-saving data protection, as it enables the creation of 1024 backup copies of shared folders and 65,000 system-level snapshots
- With file or even folder level recovery functions, you can access your important data faster and more flexibly
- The automatic self-repair function of files can detect and restore damaged files without user intervention.

Technical data
- CPU: Intel Xeon D-1521, 64-bit, Quad-core 2.2 (basic) / 2.7 (turbo) GHz, Hardware encryption engine (AES-NI)
- RAM: 8 GB DDR4 ECC UDIMM (1 8 GB module), max 64 GB (4 16 GB modules)
- Hard disk trays: 12 pcs 2.5"/3.5" SATA HDD/SSD
- Max number of hard disk trays with expansion unit: 36 pieces
- Maximum total internal capacity: 144 TB (12 12 TB drives) (capacity varies based on RAID type)
- Maximum total capacity with expansion units: 432 TB (144 TB and 24 12 TB drives) (capacity varies based on RAID type)
- Maximum size of a separate volume: 200 TB (requires 32 GB RAM, only for RAID 5 or RAID 6 groups), 108 TB
- Hot-swappable hard drives
- 4 Gigabit LAN ports (with Link Aggregation / task transfer support)
- 2 USB3.0 ports
- 2 Expansion Ports
- 2 PCIe Gen3 x8 sockets, PCIe network adapter support
- Internal drives file system: Btrfs, EXT4
- External drives file system: