Enterprise NAS with built-in service continuity engineered for data-intensive applications. Securing your business assets The 16-bay RS4021xs+ provides solid data security & lightning-fast performance. Together with its 8-core processor, ECC memory, advanced snapshot technology, and built-in 10 Gb E connectivity, the RS4021xs+ can support large multi-user environments while handling data-intensive workloads. Engineered for service continuity The RS4021xs+ ensures mission-critical data is always available, enabling businesses to deliver great results, even in the face of disaster. Redundant power Dual PSUs provide protection against a PSU failure or accidental cord removal while hot-swappable fans can be replaced without powering down the system. Maximize service availability Synology High Availability (SHA) pairs two identical units together creating an active-passive cluster with minute-level failover. Next-generation file system Btrfs prevents data corruption & reduces maintenance overheads with advanced storage technologies & optimized snapshots. Customized to your business The RS4021xs+
Includes:: two PCIe slots for performance, networking, and storage upgrades enabling it to adapt to any business environment. Hyper Backup A comprehensive backup & recovery solution for securing data stored on Synology servers. Backup data locally, to another Synology device, rsync server, or cloud-based storage such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2. Deduplication, integrity checks, and incremental transfer technology reduce bandwidth & storage use. Snapshot replication Easily schedule flexible point-in-time backups of shared folders & i SCSI LUNs with an RPO as low as 5 minutes & recovery in seconds. Set up replication & failover to other Synology storage systems for fast RTOs & minimal service disruption. Active backup suite Enables administrators to easily backup the entire IT infrastructure to their NAS, including Windows & Linux workstations & servers, file servers, VMware & Hyper-V virtual machines, and Microsoft 365 & Google Workspace accounts. Backups benefit from deduplication, multiversioning, and optimizations to reduce bandwidth & storage used.