Synology RackStation RS3618xs NAS Rack (2U) Ethernet LAN Black D-1521

High-speed scalable storage server
Synology RS3618xs is a reliable, superior-performance network-attached storage solution for large-scale enterprises with demanding business applications. It simplifies data management, optimizes virtualization environments, and rapidly expands storage capacity with minimal time investment in setup and maintenance.

Ready for 10GbE and beyond
PCIe 3.0 slots allow for faster networking options as you expand your infrastructure. Together with the built-in quad Gigabit ports, RS3618xs offers comprehensive connectivity options for link aggregation and failover configurations.

Ultimate Backup Solution
RS3618xs integrates various backup applications to safeguard your important data on any device with an intuitive user interface and durable storage technologies.

Active Backup for Business
Centralize backup tasks for VMware, Windows, and file servers. Restore whatever you want fast and reliably when needed.
Hyper Backup
Comprehensively back up your data to a local shared folder, an external device, another Synology NAS, an rsync server, or a public cloud to ensure data safety.
Synology Drive
Safeguard your computer with Synology Drive Client. Effortlessly perform real-time data backups and point-in-time file recovery.
Active Backup for Office 365 / G Suite
Protect corporate data stored on the cloud. On-premise backup solution with a centralized dashboard. Optimize storage efficiency with single instancing and block-level deduplication technology.

Fully certified storage virtualization solutions
Synology iSCSI storage fully supports most virtualization solutions to enhance work efficiency with easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations and optimizes computation efficiency. Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rate. OpenStack Cinder support turns your Synology NAS into a block-based storage component.

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 all 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 makes data recovery fast and flexible
- Automatic file self-healing detects and recovers corrupted files without user intervention

Powered by Synology DSM

Central Management System
Manage multiple Synology NAS servers simultaneously on a centralized interface to increase business efficiency.
Snapshot Replication
Schedulable and instantaneous data protection of shared folders and iSCSI LUNs for disaster prevention.
Virtual Machine Manager
Run various operating systems in isolated sandboxes. Seamlessly clone, restore and migrate virtual machines.
Synology MailPlus
Secure, reliable, and private mail server solution with an intuitive and modern mail client.
Synology High Availability
Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.
Synology Drive
A versatile solution for file management and synchronization.

Storage drive interface	Serial ATA II, Serial ATA III
Supported storage drive interfaces	Serial ATA II, Serial ATA III
Storage drive sizes supported	2.5,3.5"
RAID support	Yes
RAID levels	0, 1, 5, 6, 10, JBOD
Online RAID migration	Yes
Online RAID expansion	Yes
Hot-swap drive bays	Yes
Supported file systems	Fat, HFS+, NTFS, ext3, ext4
Storage drives installed	Yes
Total installed storage capacity	48 TB
Number of storage drives installed	12
Number of storage drives supported	12
Installed storage drive type	SSD
Supported storage drive types	HDD & SSD
Processor manufacturer	Intel
Processor family	Intel® Xeon® D
Processor model	D-1521
Processor frequency	2.4 GHz
Processor boost frequency	2.7 GHz
Processor cores	4
Processor threads	8
Processor cache	6 MB
CPU configuration (max)	1
Conflict-Free processor	Yes
Internal memory	8 GB
Internal memory type	DDR4
Memory clock speed	2133 MHz
Maximum RAM supported	64 GB
Memory slots	4
Memory form factor	UDIMM
Ethernet LAN	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s
iSCSI support	Yes
Wake-on-LAN ready	Yes
Supported network protocols	CIFS, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN)
Link aggregation	Yes
USB port	Yes
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2
Ethernet LAN (RJ-45) ports	4
PCI Express x8 (Gen 3.x) slots	2
Chassis type	Rack (2U)
Cooling type	Active
Product colour	Black
Number of fans	4 fan(s)
Fan diameter	8 cm
LED indicators	Yes
Type	NAS
Device class	Large Enterprise Business
Backup function	Yes
Backup features	Cloud, iSCSI LUN
Multilingual support	Yes
Number of users	16000 user(s)
Noise level	50.2 dB
Web-based management	Yes
Security algorithms	HTTPS, SSH, SSL/TLS
Access Control List (ACL)	Yes
Reset button	Yes
On/off switch	Yes
Built-in UPnP AV media server	Yes
Built-in FTP server	Yes
System log	Yes
Hot spare	Yes
S.M.A.R.T. support	Yes
Share folder	CIFS, AFP, FTP
Operating system installed	DiskStation Manager
Windows operating systems supported	Windows 10, Windows 7
Mac operating systems supported	Yes
Server operating systems supported	Windows Server 2012, Windows Server 2012 R2
Power supply location	Built-in
Power supply unit (PSU) capacity	500 W
Number of power supply units	1
Power consumption (typical)	142.76 W
Power consumption (HDD standby)	55.05 W
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Width	482 mm
Depth	724 mm
Height	88 mm
Cables included	AC
Power cables quantity	1
Embedded options available	No
Enhanced Intel SpeedStep Technology	Yes
Execute Disable Bit	Yes
Idle States	Yes
Intel 64	Yes
Intel Enhanced Halt State	Yes
Intel Secure Key Technology version	1.00
Intel Trusted Execution Technology	Yes
Intel TSX-NI	Yes
Intel TSX-NI version	1.00
Intel Virtualization Technology (VT-x)	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	Yes
Intel VT-x with Extended Page Tables (EPT)	Yes
Sustainability compliance	Yes
Operating temperature (T-T)	5 - 35 °C
Operating relative humidity (H-H)	5 - 95%
Storage temperature (T-T)	-20 - 60 °C
Storage relative humidity (H-H)	5 - 95%
Operating altitude	0 - 5000 m
Compliance certificates	RoHS
Certification	EAC, VCCI, CCC, RCM, FCC, CE, BSMI