Controller > Number of Controller Module 2
CPU > CPU Model Intel Xeon D-1521
CPU Quantity 1 (per controller)
CPU Core 4
CPU Architecture 64-bit
CPU Frequency 2.4 (base) / 2.7 (turbo) GHz
Memory > System Memory 8 GB DDR4 ECC UDIMM (per controller)
Memory Module Pre-installed 8 GB (8 GB x 1) (per controller)
Total Memory Slots 4 (per controller)
Maximum Memory Capacity 64 GB (16 GB x 4) (per controller)
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 (RXD1219sas x 2)
Compatible Drive Type* (See all supported drives) 2.5" dual-port SAS SSD2.5" dual-port SAS HDD3.5" dual-port SAS HDD
Notes #2 Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability."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.
External Ports > RJ-45 1GbE LAN Port 2 (with Link Aggregation / Failover support) (per controller)
RJ-45 10GbE LAN Port 1 (per controller)
PCIe > PCIe Expansion 1 x Gen3 x8 slot (x8 link) (per controller)
Add-In-Card Support 10GbE NIC25GbE NICFC HBA
File System > Internal Drives Btrfs
Appearance > Size (Height x Width x Depth) 88 mm x 430.5 mm x 692 mm
Size (Height x Width x Depth) (with server ears) 88 mm x 482 mm x 724 mm
Weight 19.7 kg
Rack Installation Support* 4-post 19" rack (Synology Rail Kit - RKS-02)
Notes #3 The rail kit is sold separately
Others > System Fan 60 mm x 60 mm x 2 (per controller)
Fan Speed Mode Full-Speed ModeCool ModeQuiet Mode
Noise Level* 51.3 dB(A)
Power Supply Unit / Adapter 500W
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60Hz, Single Phase
Power Consumption* 417.48 W (Access)
British Thermal Unit 1425.45 BTU/hr (Access)
Notes #4 Power consumption is measured when it is fully loaded with Seagate ST3600057SS hard drive(s).Noise Level Testing Environment: Fully loaded with Seagate ST8000NM0075 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology server 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 0°C to 35°C (32°F to 95°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F)
Relative Humidity 5% to 95% RH
Certification CEFCCBSMIVCCIRCMUKCAKCEACCCC
Warranty 5 Years
Notes #5 The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
Environment RoHS Compliant
Packaging Content Main Unit X 1Accessory Pack X 1AC Power Cord X 2Quick Installation Guide X 1
Optional Accessories DDR4 ECC UDIMM: D4EC-2666-8G/D4EC-2666-16GExpansion Units: RXD1219sasEnterprise Series 3.5" SAS HDD: HAS5300 Series25GbE Network Interface Card: E25G30-F210GbE Network Interface Card: E10G30-F2/E10G30-T2/E10G18-T1Rail Kit Sliding: RKS-02
Notes #6 All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
Storage Management > Maximum Single Volume Size 200 TB (32 GB memory required)108 TB
Maximum Internal Volume Number 32
Maximum iSCSI Target Number 128
Maximum LUN 128
Maximum Number of Snapshots per Advanced LUN 256
Supported RAID Type BasicJBODRAID F1RAID 0RAID 1RAID 5RAID 6RAID 10
RAID Migration Basic to RAID 1Basic to RAID 5RAID 1 to RAID 5
Volume Expansion with Larger HDDs RAID F1RAID 1RAID 5RAID 6RAID 10
Volume Expansion by Adding a HDD JBODRAID F1RAID 5RAID 6
Global Hot Spare Supported RAID Type RAID F1RAID 1RAID 5RAID 6RAID 10
Notes #7 Volumes over 108 TB require DSM UC 3.1.3-23076 or above and 32 GB of memory or more.
Account & Shared Folder > Maximum Local User Accounts 65
Virtualization > VMware vSphere ESXi 8.0 U2, ESXi 8.0 U1, ESXi 8.0, ESXi 7.0 U3, ESXi 7.0 U2, ESXi 7.0 U1, ESXi 7.0, ESXi 6.7 U3, ESXi 6.7 U2, ESXi 6.7 U1, ESXi 6.7, ESXi 6.5 U3, ESXi 6.5 U2, ESXi 6.5 U1, ESXi 6.5
Microsoft Hyper-V Windows Server 2022, Windows Server 2019, Windows Server 2016
Citrix XenServer XenServer 7
OpenStack Cinder
Snapshot Replication > Maximum Number of Replication 32
Maximum of System Snapshots 4,096
General Specifications > Networking Protocols iSCSITelnetSSHSNMPFibre Channel
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