Synology DS923+ DiskStation 4-Bay Tower NAS
4-bay DiskStation (up to 9-bay), Dual Core 2.6 GHz (turbo to 3.1 GHz), 4GB RAM (up to 32GB). Flexible storage platform for small businesses and home...
Frequently Bought Together
4-bay DiskStation (up to 9-bay), Dual Core 2.6 GHz (turbo to 3.1 GHz), 4GB RAM (up to 32GB). Flexible storage platform for small businesses and home offices
Take your data management to the next level
Versatile smart storage that helps you consolidate and store your growing digital data.
Stunningly compact
Powerful functionality in a tiny package, with room for 10GbE and dual NVMe drives.
Consolidate and share
Flexibly store and organize 50 TB of data, then share with anyone.
Keep your data safe
Hardware and software engineered to protect your data — trusted by millions.
Simply faster
DS923+ can handle more demanding application workloads and a greater number of concurrent users compared to prior-generation systems. Experience faster file indexing in Synology Drive, photo organization in Photos, and concurrent file transfers.
The performance you need
Reduce transfer times with the DS923+, designed to accelerate your workloads. Easily add faster networking and NVMe drives to further boost performance.
Storage that fits your needs
Is your data scattered across external drives and public cloud accounts? With the DS923+, you can consolidate your data with over 50 TB across 4 bays. Need more space? Expand with the DX517 for over 120 TB of storage.
Store, share, and protect
Manage all your documents, photos, and other files, back up applications and devices, and protect your assets with professional video surveillance.
Private cloud
Access files from all your devices and protect them with smart versioning. Manage, share, and sync your data across locations.
Multi-layered backup
Back up files, folders, physical devices, VMs, and SaaS applications with free solutions, and protect your NAS with built-in technologies.
Smart surveillance
Transform your Synology device into a full-featured video management system for a wide range of compatible IP cameras.
Specs
|
Hardware Specifications |
|
| CPU | |
| CPU Model | AMD Ryzen R1600 |
| CPU Quantity | 1 |
| CPU Architecture | 64-bit |
| CPU Frequency | 2-core 2.6 (base) / 3.1 (turbo) GHz |
| Hardware Encryption Engine (AES-NI) | ✔ |
| Memory | |
| System Memory | 4 GB DDR4 ECC |
| Memory Module Pre-installed | 4 GB (4 GB x 1) |
| Total Memory Slots | 2 |
| Maximum Memory Capacity | 32 GB (16 GB x 2) |
| Storage | |
| Drive Bays | 4 |
| Maximum Drive Bays with Expansion Unit | 9 (DX517 x 1) |
| M.2 Drive Slots | 2 (NVMe) |
| Compatible Drive Type* (See all supported drives) | 3.5" SATA HDD |
| 2.5" SATA SSD | |
| M.2 2280 NVMe SSD | |
| Hot Swappable Drive* | ✔ |
| External Ports | |
| RJ-45 1GbE LAN Port | |
| RJ-45 1GbE LAN Port* | 2 (with Link Aggregation / Failover support) |
| USB 3.2 Gen 1 Port* | 2 |
| eSATA Port | 1 |
| PCIe | |
| PCIe Expansion | 1 x Gen3 x2 network upgrade slot |
| File System | |
| Internal Drives | Btrfs |
| EXT4 | |
| External Drives | Btrfs |
| EXT4 | |
| EXT3 | |
| FAT | |
| NTFS | |
| HFS+ | |
| exFAT | |
| 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 | |
| Easy Replacement System Fan | ✔ |
| Brightness Adjustable Front LED Indicators | ✔ |
| Power Recovery | ✔ |
| Noise Level* | 22.9 dB(A) |
| Scheduled Power On / Off | ✔ |
| Wake on LAN / WAN | ✔ |
| Power Supply Unit / Adapter | 100 W |
| AC Input Power Voltage | 100V to 240V AC |
| Power Frequency | 50/60 Hz, Single Phase |
| Power Consumption | 35.51 W (Access) |
| 11.52 W (HDD Hibernation) | |
| British Thermal Unit | 121.09 BTU/hr (Access) |
| 39.28 BTU/hr (HDD Hibernation) | |
| 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 | |
| VCCI | |
| RCM | |
| UKCA | |
| EAC | |
| CCC | |
| KC | |
| Warranty | 3-year hardware warranty, extendable to 5 years with EW201 or Extended Warranty Plus |
| Notes | Availability varies by region. Before purchasing, please visit the official web pages of EW201/202 and Extended Warranty Plus for a list of eligible regions. |
| The warranty period starts from the purchase date as stated on your purchase receipt. | |
| 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 ECC SODIMM: D4ES02-4G/D4ES02-8G/D4ES01-16G |
| Expansion Units: DX517 | |
| 3.5" SATA HDD: HAT5300/HAT3300 | |
| 2.5" SATA SSD: SAT5210 | |
| M.2 2280 NVMe SSD: SNV3410 | |
| 10GbE Network Upgrade Module: E10G22-T1-Mini | |
| Surveillance Device License Pack | |
|
DSM Specifications |
|
| Storage Management | |
| Maximum Single Volume Size* | 108 TB |
| Maximum Internal Volume Number | 64 |
| M.2 SSD Storage Pool Support* | ✔ |
| SSD Read / Write Cache (White Paper) | ✔ |
| SSD TRIM | ✔ |
| 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) | |
| 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 | ✔ |
| NFS Kerberos Authentication | ✔ |
| 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 | |
| Maximum Hybrid Share Folders | 10 |
| Hyper Backup | |
| Folder and Package Backup | ✔ |
| Entire System Backup | ✔ |
| Notes | Full-system backup requires DSM 7.2 or later. |
| High Availability | |
| Synology High Availability | ✔ |
| Log Center | ✔ |
| Syslog Events per Second | 800 |
| Virtualization | |
| VMware vSphere with VAAI | ✔ |
| Windows Server 2016 | |
| Windows Server 2019 | |
| Windows Server 2022 | ✔ |
| Citrix Ready | ✔ |
| OpenStack | ✔ |
| 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, 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 |
| Notes | For an updated list of supported browser versions, check the DSM Technical Specifications. |
|
Add-on Packages view the complete package list |
|
| Antivirus by McAfee (Trial) | ✔ |
| Central Management System | ✔ |
| Synology Chat | ✔ |
| Maximum Users | |
| Maximum Number of Concurrent Users | 100 |
| Document Viewer | ✔ |
| Download Station | ✔ |
| Maximum Concurrent Download Tasks | 80 |
| SAN Manager | ✔ |
| Maximum iSCSI Target Number | 128 |
| Maximum LUN | 256 |
| LUN Clone/Snapshot, Windows ODX | ✔ |
| Notes | |
| 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 |
| Media Server | ✔ |
| DLNA Compliance | ✔ |
| Synology Photos | ✔ |
| Facial Recognition | ✔ |
| 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 (1280x720) |
| 1050 FPS @ 1080p (1920x1080) | |
| 600 FPS @ 3M (2048x1536) | |
| 360 FPS @ 5M (2591x1944) | |
| 200 FPS @ 4K (3840x2160) | |
| Total FPS (H.265) | 1200 FPS @ 720p (1280x720) |
| 1200 FPS @ 1080p (1920x1080) | |
| 1000 FPS @ 3M (2048x1536) | |
| 600 FPS @ 5M (2591x1944) | |
| 300 FPS @ 4K (3840x2160) | |
| 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) |
| Synology Office | ✔ |
| Maximum Users | 1,200 |
| Video Station | ✔ |
| Virtual Machine Manager | ✔ |
| Recommended Virtual Machine Instances | 4 |
| 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 |