- 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

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

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

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

PERFORMANCE BACKED BY SYNOLOGY DRIVES
- Leverage high sustained performance and reliability with enterprise-grade drives with built-in data protection designed for Synology systems

GET MORE WITH DiskStation MANAGER
- Take advantage of a host of native productivity, management, and security solutions available in the web-based Synology DSM operating system

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): Yes

MEMORY
- System Memory: 4GB DDR4 ECC
- Memory Module Pre-installed: 4GB (4GB ×1)
- Total Memory Slots: 2
- Maximum Memory Capacity: 32GB (16GB ×2)

STORAGE
- Drive Bays: 4
- Maximum Drive Bays with Expansion Unit: 9 (DX517 ×1)
- M.2 Drive Slots: 2 (NVMe)
- Compatible Drive Type:
* 3.5" SATA HDD
* 2.5" SATA SSD
* M.2 2280 NVMe SSD
- Hot Swappable Drive: Yes

EXTERNAL PORTS
- 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× Gen3 x2 network upgrade slot

FILE SYSTEM
- Internal Drives: Btrfs, EXT4
- External Drives: Btrfs, EXT4, EXT3, FAT, NTFS, HFS+, exFAT

APPEARANCE
- Size (H×W×D): 166×199×223 mm
- Weight: 2.24 kg

OTHERS
- System Fan: 92×92 mm ×2 pcs
- Fan Speed Mode: Full-Speed Mode, Cool Mode, Quiet Mode
- Brightness Adjustable Front LED Indicators: Yes
- Power Recovery: Yes
- Noise Level: 22.9 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:
* 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

ENVIRONMENT
- RoHS Compliant

PACKAGING CONTENT
- Main Unit ×1
- Accessory Pack ×1
- AC Power Adapter ×1
- AC Power Cord ×1
- RJ-45 LAN Cable ×2
- Quick Installation Guide

OPTIONAL ACCESSORIES
- DDR4 ECC SODIMM: D4ES02-4G/D4ES02-8G/D4ES01-16G
- Expansion Units: DX517
- 3.5" SATA HDD: HAT5300
- 2.5" SATA SSD: SAT5210
- M.2 2280 NVMe SSD: SNV3410
- 10GbE Network Upgrade Module: E10G22-T1-Mini
- VisualStation: VS360HD

DSM Specifications
STORAGE MENEGEMENT
- Maximum Single Volume Size: 108 TB
- Maximum Internal Volume Number: 64
- M.2 SSD Storage Pool Support: Yes
- 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)

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

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

HIGH AVAILIBILITY
- Synology High Availability: Yes

LOG CENTER
- Syslog Events per Second: 800

VIRTUALIZATION
- VMware vSphere with VAAI: Yes
- 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

Add-on Packages
- Antivirus by McAfee (Trial): Yes
- Central Management System: Yes
- Video Station: Yes

SYNOLOGY CHAT
- Maximum Number of Concurrent Users: 100

DOWLOAD STATION
- Maximum Concurrent Download Tasks: 80

SAN MANAGER
- Maximum iSCSI Target Number: 128
- Maximum LUN: 256
- LUN Clone/Snapshot, Windows ODX: Yes

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: Yes

SYNOLOGY PHOTOS
- Facial Recognition: Yes

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)
- 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)

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

VIRTUAL MACHINE MANAGER
- Recommended Virtual Machine Instances: 4 (Learn more)
- Recommended Virtual DSM Number (Licenses required): 4 (including 1 Free License)

VPN MANAGER
- Maximum Connections: 40

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