| CPU | |
| CPU Model | Intel Xeon D-1541 |
| CPU Architecture | 64-bit |
| CPU Frequency | 8-Core 2.1 (base) / 2.7 (turbo) GHz |
| Hardware Encryption Engine (AES-NI) | Yes |
| Memory | |
| System Memory | 16 GB DDR4 ECC RDIMM |
| Memory Module Pre-installed | 16GB (1 x 16GB) |
| Total Memory Slots | 4 |
| Memory Expandable up to | 128GB (32 GB x 4) |
| Storage | |
| Drive Bay(s) | 24 |
| Maximum Drive Bays with Expansion Unit | 48 (RX1217sas) / 72 (RX2417sas) |
| Compatible Drive Type (See all supported drives) | 2.5" SATA SSD 2.5" SAS HDD 2.5" SAS SSD |
| Maximum Internal Raw Capacity | 96 TB (4 TB drive x 24) (Capacity may vary by RAID types) |
| Maximum Raw Capacity with Expansion Units | 288 TB (96 TB + 4 TB drive x 48) (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. (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) |
| RJ-45 10GbE LAN Port | 2 (with Link Aggregation / Failover support) |
| USB 3.0 Port | 2 |
| PCIe Expansion | 1 x Gen3 x8 slot (x8 link) |
| Add-in-card support | M2D18 - Dual M.2 SATA/NVMe SSD adapter card for SSD cache PCIe Network Interface Card (Learn more) |
| 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) | 88 mm x 482 mm x 724 mm |
| Weight | 14.9 kg |
| 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 | Yes |
| Power Recovery | Yes |
| Noise Level* | 57 dB(A) |
| Scheduled Power On/Off | Yes |
| Wake on LAN/WAN | Yes |
| Power Supply Unit / Adapter | 2 x 500W |
| AC Input Power Voltage | 100V to 240V AC |
| Power Frequency | 50/60 Hz, Single Phase |
| Power Consumption* | 313 W (Access) 126 W (HDD Hibernation) |
| British Thermal Unit | 1068 BTU/hr (Access) 430 BTU/hr (HDD Hibernation) |
| Redundant Power Supply (for xs+ and RP model) | Yes |
| Environment 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 | 3 Years |
| Notes | Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s). Support for Wake on WAN needs switch and routers which recognize Magic Packet. 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% |
| Storage Management | |
| Maximum Internal Volume Number | 1024 |
| Maximum iSCSI Target Number | 256 |
| Maximum iSCSI LUN | 512 |
| iSCSI LUN Clone/Snapshot, Windows ODX | Yes |
| SSD Read/Write Cache (White Paper) | 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 | |
| Maximum User Accounts | 16000 |
| Maximum Groups | 512 |
| Maximum Shared Folder | 512 |
| Maximum Shared Folder Sync Tasks | 32 |
| Maximum Concurrent CIFS/AFP/FTP Connections | 4000 |
| Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) | 10000 |
| Windows Access Control List (ACL) Integration | Yes |
| NFS Kerberos Authentication | Yes |
| High Availability Manager | Yes |
| Log Center | Yes |
| Syslog Events per Second | 3000 |
| Virtualization | |
| VMware vSphere 6 with VAAI | Yes |
| Windows Server 2012 | Yes |
| Windows Server 2012 R2 | Yes |
| Windows Server 2016 | Yes |
| Citrix Ready | Yes |
| OpenStack | Yes |
| Add-on Packages (See more) | |
| Antivirus by McAfee (Trial) | Yes |
| Central Management System | Yes |
| Chat | Yes |
| Maximum Users | 6000 |
| 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 | 16000 |
| Maximum Number of Concurrently Connected Devices (with RAM expansion) | 30000 |
| Maximum Number of Hosted Files (btrfs) | 3.000.000 |
| Maximum Number of Hosted Files (ext4) | 3.000.000 |
| 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 |
| Drive | Yes |
| Maximum Number of Hosted Files | 1.000.000 |
| Maximum Number of Concurrent Connections for PC Clients | 550 |
| Notes | The Btrfs file system was used for the purpose of testing. The maximum number of hosted files refers to the maximum number of files that can be indexed and hosted by the Drive service. The maximum number of concurrent connections refers to the maximum number of connections that can be maintained when the maximum number of hosted files was reached. For tested models with expandable memory, the maximum amount of RAM was installed. Non-encrypted shared folders were used during the aforementioned testing. |
| exFAT Access (optional) | Yes |
| MailPlus / MailPlus Server | Yes |
| Free Email Accounts | 5 (Licenses required for additional accounts) |
| Maximum number of concurrent users | Up to 1100 |
| Maximum Server Performance | 4,471,000 emails per day, approx. 136GB |
| 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). |
| Environment & Packaging | |
| Environment | RoHS Compliant |
| Packaging Content | Main Unit X 1 Accessory Pack X 1 AC Power Cord X 2 Quick Installation Guide X 1 |
| Optional Accessories | Surveillance Device License Pack RAMRG2133DDR4-16G DDR4 ECC RDIMM RAMRG2133DDR4-32G DDR4 ECC RDIMM Expansion Unit: RX1217sas X 2 Expansion Unit: RX2417sas X 2 VS360HD VS960HD Synology RKS1317 - Rail Kit Sliding Synology Ethernet Adapter E10G18-T1 Synology Ethernet Adapter E10G18-T2 Synology Ethernet Adapter E10G17-F2 Synology M2D18 M.2 SSD adapter card |
