Synology DiskStation DS1525+ NAS Enclosure (Diskless) is a high-performance 5-bay NAS solution designed for businesses and offices requiring secure, scalable, and reliable network storage.
DiskStation DS1825+
High-capacity & versatile storage solution in a desktop form factor
Designed for scalability and performance
Store, share, and protect
Manage all your documents, photos, and other files, back up applications and devices, or protect your assets with professional video surveillance.
Private cloud for seamless data access
Streamlined file management and collaboration
A private photo storage and management solution
Effortlessly back up and organize photos, videos, and other visual assets using intuitive management tools. Automatically organize your content into albums and create secure share links for stakeholders and teammates. Learn more
Boost team productivity with collaborative tools
Enhance workplace collaboration with Synology’s productivity solutions. Create, edit, and share documents across teams in real time. Host an on-premises mail server to provide web-based email access while maintaining full data ownership. Additionally, stay connected through secure one-on-one chats, public channels, encrypted private channels, and group conversations. Learn more
Multi-site synchronization to empower global workflows
NAS-to-NAS synchronization
Cloud-powered multi-site syncing
Empower global workflows with high-speed access to data from anywhere in your network. Our hybrid cloud solution caches frequently used files locally for rapid access, while less frequently accessed data is stored in the cloud, reducing your on-site storage requirements.
Sync to public cloud providers
Automatically keep data in sync between Synology NAS and major cloud providers, including BackBlaze B2, Dropbox, Google Drive, and Microsoft OneDrive. Multiple protocol support, client-side encryption, and customizable sync and bandwidth controls enable efficient storage management across various platforms. Learn more
Comprehensive data backup, protection, and recovery solutions
Comprehensive and flexible Synology system backups
Protect all data, applications, and configurations on your Synology systems with comprehensive scheduled backups, including bare-metal backups, to local and remote servers, external drives, or cloud storage destinations, including Synology C2 Storage.Learn more
Tamper-proof protection with immutable snapshots
Safeguard critical LUNs and shared folders with automated immutable snapshots backed by custom retention policies. Built-in support for offsite replication further ensures robust business continuity. Learn more
Smart surveillance
Synology Surveillance Station
Dual recording to the cloud
Secure your surveillance footage with robust cloud backup that supports end-to-end encryption. Our cloud-based surveillance backup solution safeguards your Surveillance Station recordings, allowing you to access, view, share, and download footage through a convenient web portal. Ensure your data remains available even if your on-premises system is compromised.Learn more
Versatile testing platform
Create a versatile environment for application testing and evaluation, supporting Docker containers and virtual machines. For package and security testing, Virtual DSM acts as a dedicated test environment, ensuring isolation between applications, systems, and data.11
Centralized monitoring and management
Monitor and manage your Synology fleet from a central interface, on-prem or in the cloud.
Extended protection with Extended Warranty
The DS1825+ is backed by Synology’s 3-year hardware warranty.13 An optional 2-year extended warranty is available in select regions to extend coverage to 5 years.
DSM Specifications – Synology DiskStation DS1525+
Storage Management
| Max Single Volume Size | 200 TB (Requires 32GB RAM) / 108 TB |
| Max Internal Volumes | 32 |
| M.2 SSD Storage Pool | Supported |
| SSD Cache (Read/Write) | Supported |
| SSD TRIM | Supported |
| Supported RAID | SHR, Basic, JBOD, RAID 0/1/5/6/10 |
| RAID Migration | Basic→1/5, 1→5, 5→6 |
| Hot Spare | Supported (SHR, 1, 5, 6, 10) |
File System
| Internal | Btrfs, ext4 |
| External | Btrfs, ext4, ext3, FAT32, NTFS, HFS+, exFAT |
File Services
| Protocols | SMB, AFP, NFS, FTP, WebDAV, Rsync |
| Max SMB Connections | 60 |
| Windows ACL | Supported |
| NFS Kerberos | Supported |
Accounts & Shared Folders
| Max Users | 1,024 |
| Max Groups | 256 |
| Max Shared Folders | 256 |
| Shared Folder Sync Tasks | 8 |
Virtualization Support
| VMware vSphere | ESXi 6.5 – 8.0 U2 |
| Microsoft Hyper-V | Windows Server 2022 |
| Citrix XenServer | 8 / 8.2 LTSR CU1 |
| OpenStack | Cinder |
Surveillance Station
| Default Camera Licenses | 2 |
| Max IP Cameras (H.264) | Up to 40 Channels |
| Max IP Cameras (H.265) | Up to 40 Channels |
Synology Drive
| Max Users | 100 |
| Max Hosted Files | 1,000,000 |
Synology Office
| Max Users | 100 |
Virtual Machine Manager
| Recommended VM Instances | 8 |
| Virtual DSM | Up to 8 (1 Free License Included) |
VPN Server
| Max Connections | 8 |
Synology DSM NAS delivers high-performance, secure, and scalable network storage for businesses and home offices. Manage files, backup data, run virtualization, and enable private cloud storage with ease. Perfect for 5-Bay NAS Diskless setups.
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