Synology DiskStation DS925+ 4-Bay NAS (Diskless)

Key Features:

High-Capacity Storage – Supports up to 180 TB raw capacity with optional DX525 expansion unit.

Powerful Quad-Core Processor – AMD Ryzen™ V1500B (2.2 GHz, 64-bit, 4-core) with hardware encryption engine.

Upgradeable ECC Memory – Pre-installed 4 GB DDR4 ECC SODIMM (expandable up to 32 GB).

Multi-Drive Flexibility – 4 hot-swappable bays for 3.5" SATA HDDs, 2.5" SATA SSDs, plus 2× M.2 NVMe SSD slots for cache or storage pools.

Blazing Network Performance – Dual 2.5 GbE LAN ports with Link Aggregation for 522 MB/s read and 565 MB/s write speeds.

Expansion Ready – Add up to 5 extra drives with Synology DX525 expansion unit for future growth.

Comprehensive Connectivity – 2× USB 3.2 Gen 1 ports + 1× USB-C expansion port for external devices.

Efficient Cooling & Low Noise – Dual 92 mm fans with multiple speed modes (quiet/cool/full) and just 20.5 dB(A) noise level.

Energy Efficient – Consumes only 37.91 W during access and 12.33 W in HDD hibernation.

Advanced Data Protection – Snapshot Replication, Btrfs file system support, and automated scheduled backups.

Surveillance Station Support – Manage up to 40 IP cameras for business or home security.

Cross-Platform Access – Seamlessly access and share files from Windows, macOS, Linux, Chromebook, Android, iOS, or browser.

Flexible Deployment – Supports Wake-on-LAN/WAN, scheduled power on/off, and brightness-adjustable LED indicators.