Synology RackStation RS4021xs+ 16-Bay NAS Enclosure

The Synology RackStation RS4021xs+ is built to deliver exceptional performance, flexibility, and scalability to meet the requirements of businesses. It delivers a 4K random read performance of up to 234,698 IOPS and sequential read speeds of 6258 MB/s for demanding workloads. It is built with 12 drive bays that support 3.5" hard drives, as well as 2.5" hard drives and SSDs, and may be expanded to 40 bays using two Synology RX1217(RP) expansion units.

Powered by Synology DSM, Synology's unified data management operating system, and built upon the Btrfs file system, data stored on the RS4021xs+ is safely guarded by modern data protection technologies.

Provides schedulable and near-instantaneous data protection of shared folders and LUNs.

Enables restoration of specific files or folders.

Helps admins effortlessly manage available space by specifying storage limits for shared folder.

Detects and recovers corrupted files using mirrored metadata and RAID configurations.

Compresses data before writing it to the drive, reducing write commands and optimizing storage space.

DSM streamlines the provisioning and management of storage for virtual machines (VM). Certified for VMware vSphere, Microsoft Hyper-V, Citrix XenServer, and OpenStack, it integrates with your virtualization platform of choice through iSCSI or NFS protocols. Install Synology Storage Console on VMware or Windows platforms for additional management convenience and functionality right in the hypervisor.

A hosted supervisor for virtual machines running Windows, Linux, or virtualized versions of DSM with recovery mechanisms that help ensure data protection on each VM.

A collection of license-free backup solutions built to help protect Windows systems and servers, VMs, other file servers, and cloud-based storage.

Consolidates backup tasks for physical and virtual environments and enables rapid restoration of files, entire physical machines, and VMs.

Enables backup of Google Workspace data, including Gmail, Contacts, Calendar, and Drive.

Enables backup of Microsoft 365 data, including OneDrive for Business, SharePoint Online, emails, contacts, and calendar.

Synology's collaboration suite is a private SaaS for file sharing, concurrent document editing, emails, instant messaging, and more. By leveraging a private cloud infrastructure, it ensures data ownership while multilayered security enables secure multi-platform access.

Allows data access, synchronization, on-demand file restoration, and backup.

Provides a secure, reliable, and private email server.

Brings teams together through instant multi-platform communication.

Helps teams keep track of what is most important with convenient calendar sharing and scheduling.

With Synology Surveillance Station, the RS4021xs+ becomes a powerful Network Video Recorder solution with support for up to 90 IP cameras. It supports over 7600 camera models with ONVIF support to prevent vendor lock-in. You'll also have private, subscription-free storage of the recordings that can be accessed through a web browser, dedicated desktop client, or mobile app. Finally, there are event-based rules to trigger specific actions, plus an email, SMS, or push notification system.