Streamline Your Data Management ExperienceThe Synology DS1520+ is a powerful 5-bay desktop NAS that brings you a fast and smooth data management experience. Featuring four 1GbE LAN ports with network failover support, the DS1520+ provides 451.28 MB/s sequential read and 451.18 MB/s sequential write throughput with Link Aggregation enabled. The DS1520+ also benefits computing-intensive applications, speeding up Synology Drive and Moments by an average 16%, and boosting Web PHP response efficiency by about 126% as compared to its predecessor, making data management simple and efficient.The DS1520+ comes with two built-in M.2 SSD slots with Synology SSD Cache technology. Random IO responsiveness can be boosted 20 times faster than spinning drives, with no need to occupy front drive bays. You can add up to 15 drives with two Synology DX517 expansion units for a higher storage capacity.On-Premises Collaboration & Synching SolutionThe DS1520+ comes with Synology Collaboration Suite, the productivity and file sharing solution that powers team collaboration while leveraging the advantages of the private cloud to fully control data and prevent data leaks -- through HTTPS support, a built-in firewall, and multiple IP and account intrusion auto-blocking mechanisms.Synology Drive enables data synchronization and backup via web portal and desktop applications across Windows, macOS, and Linux platforms. Intelliversioning saves historical versions while minimizing storage space use and supports on-demand data restoration.Synology Office includes Documents, Spreadsheets, and Slides. Its online editing environment allows multiple users to edit, comment, and share company data simultaneously -- at no additional license fee.Synology MailPlus is a reliable mail server, accessible through an intuitive web-based client, that helps users to manage emails and increase productivity. MailPlus supports deployment in High-Availability clusters.Synology Chat enables instant conversations and optimizes team communications with powerful features including message encryption, pinning, forwarding, reminders, and scheduling.Full Backup SuiteThe DS1520+ offers users a range of backup solutions for cloud and physical, on-premises environments. Backing up and restoring data is effortless and completely free of licenses on compatible NAS models:Back up your cloud data: Cloud Sync enables users to seamlessly back up or synchronize data between a local Synology NAS and other cloud services.Back up your PCs and servers: Synology Drive Client backs up your Windows, macOS, and Linux desktop devices to safeguard important computer files.Back up your Synology NAS: Hyper Backup offers a wide range of destinations for backups of your NAS, including on-premises and cloud.Running & Protecting Virtual MachinesSynology Virtual Machine Manager (VMM) is an intuitive hypervisor application that lets users easily set up virtual machines and run operating systems including Windows, Linux, and Virtual DSM. With VMM, users can build up a cluster environment with multiple Synology systems while keeping the flexibility to scale out online and migrate virtual machines for load balancing and resource allocation. Disaster recovery features including instant snapshot, replication, cloning, restore, and failover help you fully protect each virtual machine and safeguard your digital assets at no additional cost.VMM Pro licenses give access to advanced features including remote replication, remote storage migration, high availability, and live migration, helping users further minimize the risk of service downtime and manage IT resources with maximum flexibility.Automated Surveillance SystemWith Synology Surveillance Station, the DS1520+ can act as a full-featured video surveillance system. Simply add network-connected cameras and you can monitor their live feeds, play back recordings, and receive instant event alerts right away.Works with more than 7300 IP cameras: Pick any compatible model that suits your requirements and budget, or use the LiveCam app to turn an old smartphone into an IP camera.No subscription fee: Unlike security cameras that require a monthly cloud storage subscription, all your recordings are stored on the DS1520+, 100% under your control.Remote monitoring and control: Access your surveillance system from a web browser, the desktop client, or the DS cam mobile app anytime, anywhere.Automation & notification: Set up rules to trigger specific actions when predefined events occur, such as automatically taking snapshots when motion is detected. Get notified by email, SMS, or push notification so that you can intervene in time.