Synology RackStation RS3618xs

Form Factor: Rackmount 2U (Railkit not included)
CPU: Intel Xeon D-1521/64-bit/Quad Core 2.4 (base) / 2.7 (turbo) GHz
Memory: 8GB (1 x 8GB)/DDR4 ECC UDIMM (Expandable: 64 GB (16 GB x 4))
Drive Bays: 12 (HDD not included )
Maximum Drive Bays with Expansion Unit: 36
Hot swappable Drive: Yes
External Ports: RJ-45 1GbE LAN X 4, USB 3.0 X 2, Expansion Port X 2
PCIe Expansion: 2 x Gen3 x8 slots (x8 link)
Add-in-card support: PCIe Network Interface Card; M2D18 - Dual M.2 SATA SSD adapter card for SSD cache
Maximum IP cam (License required): 75 (including 2 Free License)
Warranty: 5 years

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Hardware Specs

CPU	CPU Model	Intel Xeon D-1521
	CPU Architecture	64-bit
	CPU Frequency	Quad Core 2.4 (base) / 2.7 (turbo) GHz
	Hardware Encryption Engine (AES-NI)
Memory	System Memory	8 GB DDR4 ECC UDIMM
	Memory Module Pre-installed	8 GB (8 GB x 1)
	Total Memory Slots	4
	Memory Expandable up to	64 GB (16 GB x 4)
	Notes	Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance. Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
Storage	Drive Bays	12
	Maximum Drive Bays with Expansion Unit	36
	Compatible Drive Type* (See all supported drives)	3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD
	Maximum Internal Raw Capacity	192 TB (16 TB drive x 12) (Capacity may vary by RAID types)
	Maximum Raw Capacity with Expansion Units	576 TB (192 TB + 16 TB drive x 24) (Capacity may vary by RAID types)
	Maximum Single Volume Size*	200 TB (32 GB RAM required, for RAID 5 or RAID 6 groups only) 108 TB
	Hot Swappable Drive
	Notes	"Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay. The maximum raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit. (Learn more) Each internal volume (may consist of multiple drives) is expandble up to 108TB (with memory less than 32GB) or 200TB (with memory equal to or greater than 32GB).
External Ports	RJ-45 1GbE LAN Port	4 (with Link Aggregation / Failover support)
	USB 3.0 Port	2
	Expansion Port	2
PCIe	PCIe Expansion	2 x Gen3 x8 slots (x8 link)
	Add-In-Card Support	PCIe Network Interface Card (Learn more) M2D18 - Dual M.2 SATA SSD adapter card for SSD cache
	Notes	RS3618xs with M2D18 can only support M.2 SATA SSD. M.2 NVMe/AHCI PCIe SSD is not supported.
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	Form Factor (RU)	2U
	Size (Height x Width x Depth)	88 mm x 482 mm x 724 mm
	Weight	14.5 kg
	Rack Installation Support*	4-post 19" rack (Synology Rail Kit - RKS1317)
	Notes	The rail kit is sold separately
Others	System Fan	80 mm x 80 mm x 4 pcs
	Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode
	Easy Replacement System Fan
	Power Recovery
	Noise Level*	50.2 dB(A)
	Scheduled Power On / Off
	Wake on LAN / WAN
	Power Supply Unit / Adapter	500 W
	AC Input Power Voltage	100 V to 240 V AC
	Power Frequency	50/60 Hz, Single Phase
	Power Consumption*	142.76 W (Access) 55.05 W (HDD Hibernation)
	British Thermal Unit	487.12 BTU/hr (Access) 187.84 BTU/hr (HDD Hibernation)
	Notes	Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s). Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
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	EAC VCCI CCC RCM FCC CE BSMI
Warranty	5 Years
	Notes	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
Environment	RoHS Compliant
Packaging Content	Main Unit X 1 Accessory Pack X 1 AC Power Cord X 1 Quick Installation Guide X 1
Optional Accessories	D4EC-2666-8G DDR4 ECC UDIMM* D4EC-2400-16G DDR4 ECC UDIMM* Surveillance Device License Pack Expansion Unit: RX1217/RX1217RP X 2 Synology Ethernet Adapter E10G17-F2 Synology Ethernet Adapter E10G18-T1 Synology Ethernet Adapter E10G18-T2 Synology M2D18 M.2 SSD adapter card Synology Rail Kit Sliding - RKS1317 VS360HD VS960HD
	Notes	All memory modules will operate at the maximum frequency specified by the CPU manufacturer.

Software Specs

DSM Specifications
Storage Management	Maximum Internal Volume Number	128
	Maximum iSCSI Target Number	256
	Maximum iSCSI LUN	512
	iSCSI LUN Clone/Snapshot, Windows ODX
	SSD Read / Write Cache (White Paper)
	SSD TRIM
	RAID Group
	Supported RAID Type	RAID F1 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 F1 RAID 1 RAID 5 RAID 6 RAID 10
	Volume Expansion by Adding a HDD	RAID F1 JBOD RAID 5 RAID 6
	Global Hot Spare Supported RAID Type	RAID F1 RAID 1 RAID 5 RAID 6 RAID 10
File Services	File Protocol	CIFS/AFP/NFS/FTP/WebDAV
	Maximum Concurrent CIFS/AFP/FTP Connections	2,000
	Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion)	10,000
	Windows Access Control List (ACL) Integration
	NFS Kerberos Authentication
Account & Shared Folder	Maximum Local User Accounts	16,000
	Maximum Local Groups	512
	Maximum Shared Folder	512
	Maximum Shared Folder Sync Tasks	32
High Availability	Synology High Availability
Log Center	Syslog Events per Second	3,000
Virtualization	VMware vSphere 6 with VAAI
	Windows Server 2012
	Windows Server 2012 R2
	Windows Server 2016
	Citrix Ready
	OpenStack
General Specifications	Networking Protocols	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
	Supported Browsers	Chrome Firefox Edge Internet Explorer 10 onwards Safari 10 onwards Safari (iOS 10 onwards) Chrome (Android 6.0 onwards)
	Supported Language	English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文
Add-on Packages view the complete package list
Antivirus by McAfee (Trial)
Central Management System
Synology Chat	Maximum Users	4,000
	Notes	The number of concurrent HTTP connections for Synology Chat was configured to the maximum. CPU and RAM usage were both under 80% when the number of maximum users was reached. For tested models with expandable memory, the maximum amount of RAM was installed.
Cloud Station Server	Recommended Number of Hosted Files	3,000,000
	Recommended Number of Concurrent Sync Clients	2,000 (the number of connections that can be maintained when the recommended number of hosted files was reached)
	Notes	The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time. The maximum number of hosted files refers to the maximum number of files that can be indexed and hosted by the Cloud Station Server service. RAM expansion was not used during testing. Non-encrypted shared folders were used during the aforementioned testing.
Document Viewer
Download Station	Maximum Concurrent Download Tasks	80
exFAT Access (Optional)
Synology MailPlus / MailPlus Server	Free Email Accounts	5 (Licenses required for additional accounts)
	Maximum Number of Concurrent Users	500
	Maximum Server Performance	3,595,000 emails per day, approx. 109GB
	Notes	The CPU and RAM usage were both under 80% when testing the maximum number of concurrent users. 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
Moments	Facial Recognition
	Subject Recognition
	Auto Color & Rotate
	Moments Select
PetaSpace
Snapshot Replication	Maximum Snapshots per Shared Folder	1,024
	Maximum of System Snapshots	65,536
Surveillance Station	Maximum IP cam (Licenses required)	75 (including 2 Free License) (See All Supported IP Cameras)
	Total FPS (H.264)*	2250 FPS @ 720p (1280x720) 2100 FPS @ 1080p (1920x1080) 1500 FPS @ 3M (2048x1536) 900 FPS @ 5M (2591x1944) 550 FPS @ 4K (3840x2160)
	Total FPS (H.265)*	2250 FPS @ 720p (1280x720) 2250 FPS @ 1080p (1920x1080) 2250 FPS @ 3M (2048x1536) 1500 FPS @ 5M (2591x1944) 900 FPS @ 4K (3840x2160)
	Total FPS (MJPEG)*	750 FPS @ 720p (1280x720) 375 FPS @ 1080p (1920x1080) 250 FPS @ 3M (2048x1536) 180 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.
Synology Drive	Recommended Number of Hosted Files	3,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
	Recommended Number of Concurrent Sync Clients	1,800 (the number of connections that can be maintained when the recommended number of hosted files was reached)
	Notes	For tested models with expandable memory, the maximum amount of RAM was installed. Exceeding the limits above may result in longer response time in file operations. Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office	Maximum Users	2,900
	Notes	Multiple files were opened for testing and each file was edited by 30 users simultaneously. CPU and RAM usage were both under 80% when the number of maximum users was reached. 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
Video Station	Video Transcoding	Group 1 - Type 1 (See more)
	Maximum Transcoding Channel Number	1 channel, 30 FPS @ 1080p(1920×1080), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1
Virtual Machine Manager	Recommended Virtual Machine Instances	8 (Learn more)
	Recommended Virtual DSM Number (Licenses required)	8 (including 1 Free License)
	Notes	The specifications vary depending on system configuration and memory size.
VPN Server	Maximum Connections	40