SYNOLOGY 4 BAY NAS DISK STATION DS920+ DISKLESS
$13,650.99
FeaturesTwo built-in M.2 2280 NVMe SSD slots permit cache acceleration without occupying storage drive bays.Intel quad-core processor with AES-NI hardware encryption engine, over 225 MB/s sequential read and write throughput.4 GB DDR4 memory (expandable up to 8 GB); Scalable up to 9 drives with Synology DX517Average 15% performance boost to…
Features
- Two built-in M.2 2280 NVMe SSD slots permit cache acceleration without occupying storage drive bays.
- Intel quad-core processor with AES-NI hardware encryption engine, over 225 MB/s sequential read and write throughput.
- 4 GB DDR4 memory (expandable up to 8 GB); Scalable up to 9 drives with Synology DX517
- Average 15% performance boost to photo indexing and other computing-intensive operations, as well as database response time.
- By default, two camera licenses are installed; extra licenses can be purchased (CLP1, CLP4, or CLP8)
Specifications
| Hardware Specs CPU | |
| CPU Model | Intel Celeron J4125 |
| CPU Quantity | 1 |
| CPU Architecture | 64-bit |
| CPU Frequency | 4-core 2.0 (base) / 2.7 (burst) GHz |
| Hardware Encryption Engine (AES-NI) | Yes |
| Memory | |
| System Memory | 4 GB DDR4 non-ECC |
| Total Memory Slots | 1 |
| Maximum Memory Capacity | 8 GB (4 GB + 4 GB) |
| Notes | 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. |
| 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. | |
| Storage | |
| Drive Bays | 4 |
| Maximum Drive Bays with Expansion Unit | 9 (DX517 x 1) |
| M.2 Drive Slots | 2 (NVMe) |
| Compatible Drive Type* | 3.5″ SATA HDD |
| 2.5″ SATA HDD | |
| 2.5″ SATA SSD | |
| M.2 2280 NVMe SSD | |
| Hot Swappable Drive | Yes |
| 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. |
| External Ports | |
| RJ-45 1GbE LAN Port | 2 (with Link Aggregation / Failover support) |
| Max. number of LAN ports | 2 |
| USB 3.2 Gen 1 Port* | 2 |
| eSATA Port | 1 |
| Notes | The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019. |
| File System | |
| Internal Drives | Btrfs |
| EXT4 | |
| External Drives | Btrfs |
| EXT4 | |
| EXT3 | |
| FAT | |
| NTFS | |
| HFS+ | |
| exFAT | |
| Notes | exFAT Access can be installed for free from Package Center in DSM 7.0. In DSM 6.2 or earlier versions, exFAT Access needs to be purchased in Package Center. |
| Appearance | |
| Size (Height x Width x Depth) | 166 mm x 199 mm x 223 mm |
| Weight | 2.24 kg |
| Others | |
| System Fan | 92 mm x 92 mm x 2 pcs |
| Fan Speed Mode | Full-Speed Mode |
| Cool Mode | |
| Quiet Mode | |
| Brightness Adjustable Front LED Indicators | Yes |
| Power Recovery | Yes |
| Noise Level* | 19.8 dB(A) |
| Scheduled Power On / Off | Yes |
| Wake on LAN / WAN | Yes |
| Power Supply Unit / Adapter | 100 W |
| AC Input Power Voltage | 100V to 240V AC |
| Power Frequency | 50/60 Hz, Single Phase |
| Power Consumption* | 32.17 W (Access) |
| 9.69 W (HDD Hibernation) | |
| British Thermal Unit | 109.84 BTU/hr (Access) |
| 33.09 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 | 0∞C to 40∞C (32∞F to 104∞F) |
| Storage Temperature | -20∞C to 60∞C (-5∞F to 140∞F) |
| Relative Humidity | 5% to 95% RH |
| Certification | FCC |
| CE | |
| BSMI | |
| EAC | |
| CCC | |
| KC | |
| VCCI | |
| RCM | |
| Warranty | 3 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 Adapter X 1 | |
| AC Power Cord X 1 | |
| RJ-45 LAN Cable X 2 | |
| Quick Installation Guide X 1 | |
| Optional Accessories | DDR4 non-ECC SODIMM: D4NESO-2666-4G |
| Expansion Units: DX517 | |
| 3.5″ SATA HDD: HAT5300 | |
| 2.5″ SATA SSD: SAT5210 | |
| M.2 2280 NVMe SSD: SNV3410 | |
| VisualStation: VS360HD | |
| Surveillance Device License Pack | |
| Software Specs DSM Specifications | |
| Storage Management | |
| Maximum Single Volume Size* | 108 TB |
| Maximum Internal Volume Number | 64 |
| SSD Read / Write Cache (White Paper) | Yes |
| SSD TRIM | Yes |
| Supported RAID Type | Synology Hybrid RAID |
| 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 | Synology Hybrid RAID |
| RAID 1 | |
| RAID 5 | |
| RAID 6 | |
| RAID 10 | |
| Volume Expansion by Adding a HDD | Synology Hybrid RAID |
| JBOD | |
| RAID 5 | |
| RAID 6 (with Expansion Unit) | |
| Global Hot Spare Supported RAID Type | Synology Hybrid RAID |
| RAID 1 | |
| RAID 5 | |
| RAID 6 (with Expansion Unit) | |
| RAID 10 (with Expansion Unit) | |
| Notes | Each internal volume (may consist of multiple drives) is expandable up to 108TB. |
| Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored. | |
| File Services | |
| File Protocol | SMB/AFP/NFS/FTP/WebDAV |
| Maximum Concurrent SMB/AFP/FTP Connections | 1,000 |
| Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion) | 2,000 |
| Windows Access Control List (ACL) Integration | Yes |
| NFS Kerberos Authentication | Yes |
| Notes | Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM. |
| The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed. | |
| Account & Shared Folder | |
| Maximum Local User Accounts | 2,048 |
| Maximum Local Groups | 256 |
| Maximum Shared Folder | 512 |
| Maximum Shared Folder Sync Tasks | 16 |
| Hybrid Share | |
| Hybrid Share Folder Number | 10 |
| Notes | For more supported details, please check this article. |
| High Availability | |
| Synology High Availability | Yes |
| Log Center | |
| Syslog Events per Second | 800 |
| Virtualization | |
| VMware vSphere with VAAI | |
| Windows Server 2016 | Yes |
| Windows Server 2019 | Yes |
| Citrix Ready | Yes |
| OpenStack | Yes |
| General Specifications | |
| Networking Protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV |
| Supported Browsers | Google Chrome |
| Firefox | |
| Microsoft Edge | |
| Safari | |
| Supported Language | English, Deutsch, FranÁais, Italiano, EspaÒol, Dansk, Norsk, Svenska, Nederlands, ???????, Polski, Magyar, PortuguÍs do Brasil, PortuguÍs Europeu, T¸rkÁe, ?esk˝, ???????, ???, ???, ????, ???? |
| Notes | For an updated list of supported browser versions, check the DSM Technical Specifications. |
| Antivirus by McAfee (Trial) | Yes |
| Central Management System | Yes |
| Synology Chat | |
| Maximum Users | 1,500 |
| Maximum Number of Concurrent Users | 100 |
| Notes | When applicable, tested systems are configured with maximum memory and set to allow the maximum number of connections. |
| Document Viewer | Yes |
| Download Station | |
| Maximum Concurrent Download Tasks | 80 |
| SAN Manager | |
| Maximum iSCSI Target Number | 128 |
| Maximum LUN | 256 |
| LUN Clone/Snapshot, Windows ODX | Yes |
| Notes | iSCSI Manager has been renamed to SAN Manager in DSM 7.0. |
| Synology MailPlus / MailPlus Server | |
| Free Email Accounts | 5 (Licenses required for additional accounts) |
| Maximum Number of Concurrent Users | 100 |
| Maximum Server Performance | 1,224,000 emails per day, approx. 37GB |
| Notes | Models with more than 4 bays were installed with two SSDs for SSD cache. |
| For tested models with expandable memory, the maximum amount of RAM was 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 | Yes |
| Synology Photos | |
| Facial Recognition | Yes |
| Notes | Photo Station and Synology Moments are succeeded by Synology Photos in DSM 7.0. For a features comparison, check this article. |
| Snapshot Replication | |
| Maximum Snapshots per Shared Folder | 1,024 |
| Maximum of System Snapshots | 65,536 |
| Surveillance Station | |
| Maximum IP cam (Licenses required) | 40 (including 2 Free License) (see all supported IP cameras) |
| Total FPS (H.264) | 1200 FPS @ 720p (1280×720) |
| 1050 FPS @ 1080p (1920×1080) | |
| 600 FPS @ 3M (2048×1536) | |
| 360 FPS @ 5M (2591×1944) | |
| 200 FPS @ 4K (3840×2160) | |
| Total FPS (H.265) | 1200 FPS @ 720p (1280×720) |
| 1200 FPS @ 1080p (1920×1080) | |
| 1000 FPS @ 3M (2048×1536) | |
| 600 FPS @ 5M (2591×1944) | |
| 300 FPS @ 4K (3840×2160) | |
| Total FPS (MJPEG) | 680 FPS @ 720p (1280×720) |
| 400 FPS @ 1080p (1920×1080) | |
| 300 FPS @ 3M (2048×1536) | |
| 200 FPS @ 5M (2591×1944) | |
| Notes | Maximum IP cameras and FPS figures are tested with the device fully populated with drives and under a continuous recording setup. |
| Actual system capabilities may differ depending on system configuration, drive performance, number of features enabled, and if additional workloads are present. | |
| Synology Drive | |
| Recommended Number of Concurrent Sync Clients | 350 (the number of connections that can be maintained when the recommended number of hosted files was reached) |
| Recommended Number of Hosted Files | 5,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) |
| Notes | Exceeding the recommended numbers above will not block application operations, but may result in longer response time. |
| Utilizing SSD cache can significantly improve performance. | |
| For tested models with expandable memory, the maximum amount of RAM was installed. | |
| Btrfs file system and non-encrypted shared folders were used during the aforementioned testing. | |
| Synology Office | |
| Maximum Users | 1,200 |
| Notes | Multiple files were opened for testing and each file was edited by 30 users simultaneously. |
| 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 | Yes |
| Virtual Machine Manager | |
| Recommended Virtual Machine Instances | 4 (Learn more) |
| Recommended Virtual DSM Number (Licenses required) | 4 (including 1 Free License) |
| Notes | The specifications vary depending on system configuration and memory size. |
| VPN Server | |
| Maximum Connections | 40 |
*Note: The actual colors may be different from the color displayed here. Features, Price and Specifications are subject to change without notice.
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