| Revew | Synology DS425+ 4-Bay NASThe Synology DS425+ is a compact 4-bay NAS for advanced home users, professionals and small businesses. It runs on a 4-core Intel Celeron J4125 with 2GB of DDR4 memory expandable to 6GB and supports up to 96TB of raw capacity with 24TB drives. A built-in 2.5GbE port delivers about 278/281MB/s sequential read/write, and two M.2 NVMe slots are available for SSD caching. DSM includes backup for PCs and servers, file sync and sharing, photo management and Surveillance Station for up to 40 IP cameras. 
Key features- 4 bays, up to 96TB - Four bays for 3.5 or 2.5 inch SATA drives with up to 96TB of raw capacity using 24TB drives.
- 2.5GbE networking - Built-in 2.5GbE and 1GbE ports with about 278/281MB/s sequential read/write.
- M.2 NVMe cache - Two M.2 2280 NVMe slots to accelerate performance with SSD caching.
- Backup and data protection - Centralized backup for PCs, servers, VMs and SaaS apps, plus immutable snapshots with custom retention policies.
- Sharing and sync - Access files from any device, sync between sites and with Dropbox, Google Drive, OneDrive and BackBlaze B2.
- Video surveillance - Surveillance Station supports over 8,700 IP camera models and up to 40 cameras, with two licenses included.
Specifications| Manufacturer | Synology | | Model | DS425+ | | CPU | Intel Celeron J4125, 4 cores, 2.0GHz (turbo 2.7GHz) | | Memory | 2GB DDR4 non-ECC, expandable to 6GB (2GB + 4GB) | | Drive bays | 4 x 3.5" SATA HDD or 2.5" SATA SSD | | M.2 slots | 2 x M.2 2280 NVMe | | Max. raw capacity | 96TB (with 24TB drives) | | Hot swappable drives | Yes (not M.2 slots) | | Network | 1 x 2.5GbE RJ-45, 1 x 1GbE RJ-45 | | USB | 2 x USB 3.2 Gen 1 | | RAID | SHR, Basic, JBOD, RAID 0, 1, 5, 6, 10 | | File system | Btrfs, ext4 | | Max. single volume | 108TB | | Fans | 2 x 92 mm | | Noise level | 21.6 dB(A) | | Power supply | 90W adapter, 100-240V AC | | Power consumption | 28.25W access, 6.10W HDD hibernation | | Operating temperature | 0°C to 40°C | | Dimensions (HxWxD) | 166 x 199 x 223 mm | | Weight | 2.18 kg |
In the box- Main unit
- Accessory pack
- AC power adapter
- AC power cord
- 2 x RJ-45 LAN cable
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