Synology DiskStation DS425 NAS Enclosure (Diskless)

Description DS425 key features : 4-bay NAS enclosure for flexible and high-performance storage Diskless design supports user-selected HDDs or SSDs Ideal for small businesses and advanced home users Secure file sharing, backup, and remote access Powered by Synology DiskStation Manager (DSM) Supports RAID configurations for data redundancy Compact, quiet, and energy-efficient operation Hardware Specifications CPU CPU Model Intel Celeron J4125 CPU Quantity 1 CPU Core 4 CPU Architecture 64-bit CPU Frequency 2.0 (base) / 2.7 (turbo) GHz Hardware Encryption Engine Memory System Memory 2 GB DDR4 non-ECC Total Memory Slots 1 Maximum Memory Capacity 6 GB (2 GB 4 GB) Notes Synology reserves the right to replace memory modules with the same or higher frequency based on supplier’s product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance. Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion. Storage Drive Bays 4 M.2 Drive Slots 2 (NVMe) Drive Type (See all supported drives) 3.5″ SATA HDD 2.5″ SATA SSD M.2 2280 NVMe SSD Hot Swappable Drive* Notes The hot swappable drive feature is not supported by M.2 SSD slots. Synology only guarantees full functionality, reliability, and performance for compatible drives. Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article. External Ports RJ-45 1GbE LAN Port 1 RJ-45 2.5GbE LAN Port 1 USB 3.2 Gen 1 Port 2 Notes This device’s 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes. DSM Specifications Storage Management Maximum Single Volume Size 108 TB Maximum Internal Volume Number 32 M.2 SSD Storage Pool Support* SSD Read/Write Cache (Determining cache size) SSD TRIM Supported RAID Type Synology Hybrid RAID Basic JBOD RAID 0 RAID 1 RAID 5 RAID 6 RAID 10 RAID Migration Basic to RAID 1 Basic to RAID 5 RAID 1 to RAID 5 RAID 5 to RAID 6 Volume Expansion with Larger HDDs Synology Hybrid RAID RAID 1 RAID 5 RAID 6 RAID 10 Volume Expansion by Adding a HDD Synology Hybrid RAID JBOD RAID 5 Global Hot Spare Supported RAID Type Synology Hybrid RAID RAID 1 RAID 5 Notes Each internal volume (may consist of multiple drives) is expandable up to 108TB. Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration. Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored. Creating M.2 storage pools requires the use of Synology-verified SSDs, which are rigorously tested under extreme temperature conditions. Thermal parameters for SSDs and NAS units are fine-tuned to ensure optimal management of thermal conditions under I/O-intensive environments. (Learn more) File System Internal Drives Btrfs ext4 External Drives Btrfs ext4 ext3 FAT32 NTFS HFS exFAT File Services File Protocol SMB AFP NFS FTP WebDAV Rsync 1Status indicator 2Drive status indicators 3Drive tray lock 4USB 3.2 Gen 1 port 5Power button and indicator 6Drive trays 7Fans 81GbE RJ-45 port 92.5GbE RJ-45 port 10Reset button 11USB 3.2 Gen 1 port 12Power port 13Kensington security slot 14M.2 NVMe SSD slots   Show More Show Less