Synology DiskStation DS425+ - 4-bay NAS, black

The Synology DiskStation DS425+ 4-Bay NAS is a desktop storage server designed for data consolidation in homes and small offices. It features four hot-swappable drive bays that accommodate both 3.5-inch HDDs and 2.5-inch SSDs. The unit is powered by an Intel Celeron J4125 quad-core processor, operating at a 2 GHz base frequency with a 2.7 GHz boost. Hardware-level RAID support includes levels 0, 1, 5, 6, 10, and JBOD for managing disk redundancy and performance. Connectivity is provided by two 2.5GbE RJ-45 ports to facilitate faster data throughput on compatible networks. Administrators can manage up to 512 user accounts for shared file access and collaboration.

The device comes with 2 GB of DDR4 memory, which can be expanded to 6 GB via a single available slot. Two integrated M.2 slots support SSD caching, improving system response times without occupying the main storage bays. The unit uses two 92 mm fans to maintain airflow, resulting in a noise level of 21.6 dB. External connectivity includes two USB 3.2 Gen 1 ports for direct transfers from portable drives. The system supports multiple file systems, including Btrfs, ext4, and NTFS, enabling snapshot technology for data recovery. Typical power consumption is 28.25 W, drawing from an external 90 W power supply unit.

• Quad-core Intel Celeron J4125 processor for concurrent file sharing and backup tasks.
• Two 2.5GbE Ethernet ports for high-bandwidth local network connections.
• Four hot-swappable drive bays supporting a maximum internal capacity of 80 TB.
• Dual M.2 SSD slots for dedicated storage caching to improve random I/O performance.
• Btrfs file system support for data integrity and snapshot-based protection.
• Expandable memory up to 6 GB of DDR4 RAM.
• Integrated support for iSCSI LUN and cloud-based backup.