Hardware Specifications
CPU
CPU Model
Intel Xeon D-1527
CPU Architecture
64-bit
CPU Frequency
Quad Core 2.2 (base) / 2.7 (turbo) GHz
Hardware Encryption Engine (AES-NI)
Yes
Memory
System Memory
8 GB DDR4 ECC UDIMM
Memory Module Pre-installed
8GB (1 x 8GB)
Total Memory Slots
4
Memory Expandable up to
64 GB (16 GB x 4)
Storage
Drive Bays
4
Maximum Drive Bays with Expansion Unit
16
M.2 Drive Slots
2 (NVMe and SATA)
Compatible Drive Type
3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
M.2 2280 NVMe and SATA SSD
Maximum Internal Raw Capacity
56 TB (14 TB drive x 4) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units
224 TB (56 TB + 14 TB drive x 12) (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
Yes
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 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.
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
2
Expansion Port
1
PCIe
PCIe Expansion
1 x Gen3 x8 slot (x8 link)
Add-in-card support
PCIe Network Interface Card
File System
Internal Drives
Btrfs
EXT4
External Drives
Btrfs
EXT4
EXT3
FAT
NTFS
HFS+
exFAT
Notes
exFAT Access is purchased separately in Package Center.
Others
System Fan
40 mm x 40 mm x 2 pcs
Fan Speed Mode
Full-Speed Mode
Cool Mode
Quiet Mode
Easy Replacement System Fan
Yes
Power Recovery
Yes
Noise Level
39.3 dB(A)
Scheduled Power On/Off
Yes
Wake on LAN/WAN
Yes
Power Supply Unit / Adapter
2 X 150W
AC Input Power Voltage
100V to 240V AC
Power Frequency
50/60 Hz, Single Phase
Power Consumption
68.68 W (Access)
34.78 W (HDD Hibernation)
British Thermal Unit
234.35 BTU/hr (Access)
118.67 BTU/hr (HDD Hibernation)
Redundant Power Supply (for xs+ and RP model)
Yes
Environment Temperature
Operating Temperature
5oC to 35oC (40oF to 95oF)
Storage Temperature
-20oC to 60oC (-5oF to 140oF)
Relative Humidity
5% to 95% RH
Certification
EAC
VCCI
CCC
RCM
KC
FCC
CE
BSMI
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: 24.25-25.75oC, Humidity: 58.2-61.8%
DSM Specifications
Storage Management
Maximum Internal Volume Number
1,024
Maximum iSCSI Target Number
256
Maximum iSCSI LUN
512
iSCSI LUN Clone/Snapshot, Windows ODX
Yes
SSD Read/Write Cache
Yes
SSD TRIM
Yes
RAID Group
Yes
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
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
Yes
NFS Kerberos Authentication
Yes
Account and Shared Folder
Maximum Local User Accounts
16,000
Maximum Local Groups
512
Maximum Shared Folder
512
Maximum Shared Folder Sync Tasks
32
High Availability Manager
Yes
Log Center
Yes
Syslog Events per Second
3,000
Virtualization
VMware vSphere 6 with VAAI
Yes
Windows Server 2016
Yes
Citrix Ready
Yes
OpenStack
Yes
Add-on Packages
Antivirus by McAfee (Trial)
Yes
Central Management System
Yes
Chat
Yes
Maximum Users
4,000
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
Yes
Maximum Number of Concurrently Connected Devices
2,000
Maximum Number of Concurrently Connected Devices (with RAM expansion)
10,000
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
Yes
Download Station
Yes
Maximum Concurrent Download Tasks
80
exFAT Access (optional)
Yes
MailPlus / MailPlus Server
Yes
Free Email Accounts
5
Maximum number of concurrent users
Up to 450
Maximum Server Performance
3,363,000 emails per day, approx. 102.6 GB
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
Yes
DLNA Compliance
Yes
Moments
Yes
Facial recognition
Yes
Subject recognition
Yes
PetaSpace
Yes
Snapshot Replication
Yes
Maximum Snapshots per Shared Folder
1024
Maximum of system snapshots
65536
Surveillance Station
Yes
Maximum IP cam
75 (including 2 Free License)
Total FPS (H.264)
2250 FPS at 720p (1280 x 720)
1050 FPS at 1080p (1920 x 1080)
600 FPS at 3M