Synology DiskStation DS3018xs

Form Factor: Tower
CPU: Intel Pentium D1508/64-bit/Dual Core 2.2 GHz 2.2 (base) / 2.6 (turbo) GHz/Hardware Encryption Engine (AES-NI)
Memory: 8GB (1 x 8GB)/DDR4 ECC (Expandable: 32 GB (16 GB x 2))
Drive Bays: 6 (HDD not included )
Maximum Drive Bays with Expansion Unit: 30 (Expansion Unit: DX1215 X 2)
Hot swappable Drive: Yes
External Ports: RJ-45 1GbE LAN X 4; USB 3.0 X 3, Expansion Port X 2
PCIe Expansion: 1 x Gen3 x8 slot (x8 link)
Add-in-card support: M2D17 - Dual M.2 SSD adapter card for SSD cache; PCIe Network Interface Card
Maximum IP cam (License required): 75 (including 2 Free License)
Warranty: 5 years

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Hardware Specifications
CPU
CPU Model	Intel Pentium D1508
CPU Architecture	64-bit
CPU Frequency	Dual Core 2.2 GHz 2.2 (base) / 2.6 (turbo) GHz
Hardware Encryption Engine (AES-NI)
Memory
System Memory	8 GB DDR4 ECC SO-DIMM
Memory Module Pre-installed	8GB (1 x 8GB)
Total Memory Slots	2
Memory Expandable up to	32 GB (16 GB x 2)
Storage
Drive Bays	6
Maximum Drive Bays with Expansion Unit	30
Compatible Drive Type* (See all supported drives)	3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD
Maximum Internal Raw Capacity	60 TB (10 TB drive x 6) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units	300 TB (10 TB drive x 30) (Capacity may vary by RAID types)
Maximum Single Volume Size	200 TB (32GB RAM required, for RAID 5 or RAID 6 groups only) 108 TB
Hot Swappable Drive
Notes	"Compatible drive type" indicates the 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 single volume size is not directly related to the maximum raw capacity. (Learn more) Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 108TB or 200TB if upgraded to 32GB RAM or more.
External Ports
RJ-45 1GbE LAN Port	4 (with Link Aggregation / Failover support)
USB 3.0 Port	3
Expansion Port	2
PCIe
PCIe Expansion	1 x Gen3 x8 slot (x8 link)
Add-in-card support	M2D17 - Dual M.2 SSD adapter card for SSD cache
Notes	DS3018xs with M2D17 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
Size (Height x Width x Depth)	166 mm x 282 mm x 243 mm
Weight	5.2 kg
Others
System Fan	92 mm x 92 mm x 2 pcs
Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode
Easy Replacement System Fan
Brightness adjustable front LED indicators
Power Recovery
Noise Level*	25.5 dB(A)
Scheduled Power On/Off
Wake on LAN/WAN
Power Supply Unit / Adapter	250W
AC Input Power Voltage	100V to 240V AC
Power Frequency	50/60 Hz, Single Phase
Power Consumption*	126.89 W (Access) 56.92 W (HDD Hibernation)
British Thermal Unit	433.27 BTU/hr (Access) 194.35 BTU/hr (HDD Hibernation)
Environment Temperature
Operating Temperature	5°C to 40°C (40°F to 104°F)
Storage Temperature	-20°C to 60°C (-5°F to 140°F)
Relative Humidity	5% to 95% RH
Certification	FCC Class B CE Class B BSMI Class B
Warranty	5 Years
Notes	Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s). Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in idle; Two G.R.A.S. Type 40AE microphones, each set up at 1 meter away from the Synology NAS front and rear; Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
DSM Specifications ( See more )
Storage Management
Maximum Internal Volume Number	1024
Maximum iSCSI Target Number	64
Maximum iSCSI LUN	512
iSCSI LUN Clone/Snapshot, Windows ODX
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
Volume Expansion by Adding a HDD	RAID F1 RAID 5 RAID 6 JBOD
Global Hot Spare Supported RAID Type	RAID F1 RAID 1 RAID 5 RAID 6 RAID 10
SSD Support
SSD Read/Write Cache (White Paper)
SSD TRIM
File Sharing Capacity
Maximum Local User Accounts	16000
Maximum Local Groups	512
Maximum Shared Folder	512
Maximum Shared Folder Sync Tasks	16
Maximum Concurrent CIFS/AFP/FTP Connections	2000
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
High Availability Manager
Log Center
Syslog Events per Second	1500
Virtualization
VMware vSphere 6 with VAAI
Windows Server 2012
Windows Server 2012 R2
Citrix Ready
OpenStack
Add-on Packages (learn more about the complete add-on package list)
Antivirus by McAfee (Trial)
Central Management System
Chat
Maximum Users	2000
Notes	The number of concurrent HTTP connections for 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
Maximum Number of Concurrently Connected Devices	2000
Maximum Number of Concurrently Connected Devices (with RAM expansion)	8000
Maximum Number of Synced Files (btrfs)	1,000,000 / single file reaction time 640 ms
Maximum Number of Synced Files (ext4)	1,000,000 / single file reaction time 387 ms
Notes	The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time. For more information on file processing capability, please refer to the reaction time for file processing. File reaction time refers to the preparation time required for other devices to start downloading a 1KByte file from a Synology NAS after the file has been added to the NAS. 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)
MailPlus / MailPlus Server
Free Email Accounts	5 (Licenses required for additional accounts)
Recommended MailPlus Client Number	Up to 200 (Btrfs) / 200 (EXT4)
Maximum Server Performance	1,616,000 (Btrfs) / 1,782,000 (EXT4) emails per day, approx. 49.31 GB (Btrfs) / 54.38 GB (EXT4)
Notes	The CPU and RAM usages were both under 80% when testing recommended client numbers. 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
Office
Maximum Users	400
Maximum Simultaneous Editing Users	80
Notes	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
PetaSpace
Snapshot Replication
Maximum Snapshots per Shared Folder	1024
Maximum Snapshots of all Shared Folder	65536
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) 1050 FPS @ 1080p (1920×1080) 600 FPS @ 3M (2048x1536) 450 FPS @ 5M (2591x1944) 320 FPS @ 4K (3840x2160)
Total FPS (MJPEG)*	600 FPS @ 720p (1280x720) 360 FPS @ 1080p (1920×1080) 240 FPS @ 3M (2048x1536) 192 FPS @ 5M (2591x1944)
Total FPS (H.265)*	2250 FPS @ 720p (1280x720) 2250 FPS @ 1080p (1920×1080) 1125 FPS @ 3M (2048x1536) 600 FPS @ 5M (2591x1944) 500 FPS @ 4K (3840x2160)
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.
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
VPN Server
Maximum Connections	30
Environment & Packaging
Environment	RoHS Compliant
Packaging Content	Main Unit X 1 Accessory Pack X 1 AC Power Cord X 1 RJ-45 LAN Cable X 2 Quick Installation Guide X 1
Optional Accessories	Surveillance Device License Pack 16GB DDR4 ECC SO-DIMM Expansion Unit: DX1215 X 2 VS360HD VS960HD Synology Ethernet Adapter E10G15-F1 Synology Ethernet Adapter E10G17-F2 Synology M2D17 M.2 SSD adapter card