Synology DS920+ is an ideal network-attached storage solution to streamline data management and productivity. Two built-in M.2 SSD slots and Synology SSD Cache technology allow you to boost system I/O and application performance. Scalable storage design lets you start small and expand storage capacity with Synology DX517 as your data grows.Optimize performance and capacityDS920+ provides two built-in M.2 SSD slots so that you can take full advantage of Synology SSD Cache functionality. Add SSD cache for up to 20 times faster I/O response without using front drive bays. You can add five more drives with Synology DX517 to expand storage capacity.Accelerate demanding applicationsA more powerful CPU speeds up computing-intensive applications. The new 4-core processor boosts photo indexing, database response times, and web PHP response efficiency. Easily categorize your photo memories, smoothly manage files across computers and mobile devices, and enjoy blazing fast web applications.Access and sync your files seamlesslySynology Drive provides a built-in universal portal to access your data anytime and anywhere, and synchronize all your files across platforms, including Windows, macOS, Linux, Android, and iOS. - Sync files on demand: Save the storage space and network bandwidth of your PC.- Go back in time: Easily retrieve previous versions of your shared files.- Back up your data: Protect your files as scheduled or in real-time. Real-time collaboration on your private cloudSynology Office is a collaboration package combining the convenience and usability of public clouds with the data privacy and security guaranteed by private clouds. It allows you to work seamlessly together on documents and spreadsheets in a protected environment. Virtual Machine ManagerVirtual Machine Manager enables you to test new software in sandboxes, isolate your customers\' machines, and increase the flexibility of your server. You can easily run Windows, Linux, and Virtual DSM on your Synology NAS by just a few steps.Powered by Synology DiskStation Manager:- Multimedia: Complete multimedia solution for management, streaming, and playback.- Hyper Backup: Store multiple backup versions with block-level incremental data backup and cross-version deduplication.- Desktop Backup: Simplified backup solution for your Mac, PC, and mobile devices.- Snapshot Replication: Schedulable and instantaneous data protection for shared folders and iSCSI LUNs for disaster prevention.- Surveillance Station: Complete surveillance solution for recording, monitoring, and management.- Virtual Machine Manager: Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines.Ports and Buttons:- Status indicator- Drive status indicator- Drive tray lock- USB 3.0 port- Power button and indicator- Drive tray- 1GbE RJ-45 port- Reset button- eSATA port- Power port- System fan- Kensington Security SlotSpecification:Hardware:- CPU Model: Intel Celeron J4125- CPU Quantity: 1- CPU Architecture: 64-bit- CPU Frequency: 4-core 2.0 (base) / 2.7 (burst) GHz- Hardware Encryption Engine (AES-NI): Yes- System Memory: 4 GB DDR4 non-ECC- Total Memory Slots: 1- Maximum Memory Capacity: 8 GB (4 GB + 4 GB)- Drive Bays: 4- Maximum Drive Bays with Expansion Unit: 9 (DX517 x 1)- M.2 Drive Slots: 2 (NVMe)- Compatible Drive Types: 3.5\" SATA HDD, 2.5\" SATA HDD, 2.5\" SATA SSD, M.2 2280 NVMe SSD- Maximum Single Volume Size: 108 TB- Hot Swappable Drive: Yes - RJ-45 1GbE LAN Port: 2 (with Link Aggregation / Failover support)- USB 3.2 Gen 1 Port: 2- eSATA Port: 1- Noise Level: 19.8 dB(A)- System Fan: 92 mm x 92 mm x 2 pcs- Size (Height x Width x Depth): 166 mm x 199 mm x 223 mm- Weight: 2.24 kg- Environment: RoHS Compliant- Warranty: 3 YearsSoftware:- Maximum Internal Volume Number: 64- 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- File Protocol: CIFS/AFP/NFS/FTP/WebDAV- Networking Protocols: SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV