Synology DiskStation DS925+ 4-Bay Plus NAS

Brand: Synology | Category: Storage Systems

SKU: SYNO-DS925PLUS | Part #: DS925+ | MPN: DS925+

Contact for Pricing — Request a Quote

The DS925+ sits at the intersection of hybrid and all-flash deployments, supporting iSCSI, NFS, SMB 3, and WebDAV protocols across a compact 4-bay form factor. This is not an all-flash system—it's engineered as a hybrid-capable NAS that lets you pair SATA HDDs in the main bays with up to two M.2 NVMe SSDs in independent pools or as read cache. That flexibility matters when you're managing mixed workloads: virtual machine storage, user shares, and backup targets that don't all demand sub-millisecond latency. Synology built the DiskStation DS925+ for storage architects and infrastructure teams operating in environments where a single unified appliance needs to juggle multiple protocols and access patterns without overcommitting to flash.

At the core sits an AMD Ryzen R1600 dual-core processor with x86-64 architecture, paired with 8 GB of ECC DDR5 SO-DIMM memory—expandable to 32 GB for shops running multiple containerized services or handling concurrent iSCSI sessions. The DS925+ part number carries two 2.5 GbE ports with Link Aggregation and Failover support, which means a competent network engineer can bond them for 5 Gbps sustained throughput or configure active-passive failover for uptime-critical deployments. The addition of a single PCIe 3.0 x2 slot opens a clear upgrade path: slide in a 10GbE card for branch office consolidation, or add an NVMe expansion module to scale cache without occupying SATA bays. This modular thinking is why the Synology platform appeals to teams that refuse to rip-and-replace every three years.

The storage subsystem supports SHR (Synology Hybrid RAID), SHR-2 with dual parity, and traditional RAID 0, 1, 5, 6, and 10—giving a storage architect genuine options for balancing capacity, rebuild time, and fault tolerance. Four hot-swappable 3.5" or 2.5" SATA III bays accept anything from 2 TB to 22 TB drives, while the two M.2 2280 NVMe slots run over PCIe 3.0 and can operate as an independent tier or transparently cache frequently accessed blocks. That layering is critical for hybrid environments where some users need gigabyte/second sequential bandwidth (video editing, scientific data processing) while others tolerate 100 Mbps latency (email, SharePoint). Synology DiskStation Manager 7.2 and above expose cache policy granularly, letting you pin hot datasets to NVMe without forcing every I/O through flash. The DS925+ also supports rsync and WebDAV out of the box, so integration with legacy infrastructure or cloud-native backup workflows requires no additional appliances or licenses.

For high-availability deployments, the DS925+ qualifies for Synology High Availability add-on packages, allowing two units to operate in active-passive or active-active mode with synchronous or asynchronous replication. This appeals to IT teams managing critical file services or disaster recovery in distributed sites across the GCC or Asia-Pacific. The 90 W external power supply keeps thermal output modest—important in dense colocation or edge environments where cooling headroom is finite. iSCSI support means the unit can serve as a backend for VMware, Hyper-V, or Nutanix clusters without requiring a separate SAN controller; each initiator sees consistent block-level semantics, and CHAP authentication integrates with your existing LDAP or Active Directory deployment. The part number DS925+ does not include NVMe-over-Fabric (NVMe-oF) support, so if your AI infrastructure team is building ultra-low-latency training clusters on NVIDIA or AMD hardware, you'll want to pair this unit with external NVMe arrays or consider higher-tier models—but for traditional enterprise workloads, the protocol breadth is more than sufficient.

Omnixon Global maintains DS925+ inventory and pre-configuration services across our Dubai headquarters and regional logistics hubs in Abu Dhabi, Riyadh, and Singapore. We work directly with storage architects, systems integrators, and data centre operators throughout the GCC, Asia, and Europe to validate Synology deployments before shipment, ensuring your firmware baselines, RAID layouts, and network configurations align with your security and availability policies. If you are evaluating the DiskStation DS925+ for branch consolidation, hybrid-cloud archival, or departmental file services, submit an RFQ today and our team will provide detailed pricing, lead times, and on-site implementation support.

Hybrid Deployment Capabilities

• Dual 2.5 GbE ports with Link Aggregation and Failover for redundant uplink design
• Four SATA III bays plus two M.2 NVMe slots enabling tiered storage pools or transparent caching
• iSCSI, NFS, SMB 3, WebDAV, and rsync protocol support for heterogeneous infrastructure
• SHR and SHR-2 RAID with parity rebuilds optimized for large-capacity drives
• PCIe 3.0 x2 expansion slot for 10GbE NIC or additional NVMe modules
• Expandable memory from 8 GB to 32 GB ECC DDR5 for multi-tenant or high-session-count workloads
• High Availability add-on support with synchronous replication for uptime-critical file services