Synology RS4021xs+ RackStation 16-bay NAS server
by SynologySynology RackStation RS4021xs+ is a powerful 16-bay 3U storage solution designed for high throughput and data integrity, made with built-in redundant power. Equipped with an 8-core processor and upgradable to 64 GB memory, the RS4021xs+ is capable of hosting demanding services involving virtualization, mail, office collaboration, and surveillance, to meet the unique requirements of enterprise environments.
- Installment Payment You can pay in installments using Visa, Visa Premium, Maestro, MasterCard, Diners credit cards. The fee is 5% over the quoted price, and it is assigned to your purchase order in your shopping cart upon the selection of the methods of payment. For more details, please click on the link containing The Methods of Payment.
- Fast Delivery For all the purchase orders within Croatia received by 02:00 p.m. on a working day, delivery will be made on the following working day*. On the territory of Europe, we provide a fast delivery service. For more details, please click on the link containing The Delivery Terms.
- International Purchasing The companies within the EU (except for the Republic of Croatia) with a valid VAT ID number, will pay the price exclusive of VAT. The price will be calculated upon checkout. All the customers outside of the EU will pay the export price exclusive of VAT.
Package includes
- 1 x RS4021xs+ main unit
- 1 x Quick Installation Guide
- 1 x Accessory pack
- 2 x AC power cords
Built to Handle Intensive Workloads
Synology RackStation RS4021xs+ is built to deliver exceptional performance, flexibility, and scalability for demanding enterprise environments.
• Up to 234,698 4K random read IOPS and 6,258 MB/s sequential read performance for demanding workloads1
• Featuring 16 drive bays supporting both SATA HDD/SSD 2.5/3.5" drives4, expandable to 40 bays using two Synology RX1217(RP) expansion units
Optimized for Data Protection and Integrity
Powered by Synology DSM, our 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.
• Advanced snapshots technology provides schedulable and near-instantaneous data protection of shared folders and LUNs
• File and folder-level data restoration enables restoration of specific files or folders
• Flexible storage quota system helps admins effortlessly manage available space by specifying storage limits for shared folders
• File self-healing detects and recovers corrupted files using mirrored metadata and RAID configurations
• Inline compression compresses data before writing it to the drive, reducing write commands and optimizing storage space
Virtualization and Certified Storage
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. Synology Virtual Machine Manager (VMM) is a hosted hypervisor for virtual machines running Windows®, Linux®, or virtualized versions of DSM with recovery mechanisms that ensure data protection on each VM.
Data Backup Solutions for IT Infrastructure
Synology Active Backup Suite is a collection of license-free backup solutions built to protect Windows PCs and servers, VMs, other file servers, and cloud-based storage.
Active Backup for Business (ABB) consolidates backup tasks for physical and virtual environments and enables rapid restoration of files, entire physical machines, and VMs.
Active Backup for Google Workspace enables backup of Google Workspace data including Gmail, Contacts, Calendar, and Drive.
Active Backup for Microsoft 365 enables backup of Microsoft 365 data including OneDrive for Business, SharePoint Online, emails, contacts, and calendar.
On-Premises Collaboration
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.
Synology Drive allows data access, synchronization, on-demand file restoration, and backup.
Synology MailPlus6 provides a secure, reliable, and private email server.
Synology Chat brings teams together through instant multi-platform communication.
Synology Calendar helps teams keep track of what is most important with convenient calendar sharing and scheduling.
Private Video Surveillance
With Synology Surveillance Station, the RS4021xs+ becomes a powerful Network Video Recorder solution with support for up to 90 IP cameras.
• 7,900+ supported camera models
• ONVIF support to prevent vendor lock-in
• Private, subscription-free storage of the recordings
• Access through web browser, dedicated desktop clients, or mobile app
• Event-based rules to trigger specific actions
• Email, SMS, or push notification systems
CPU | Intel® Xeon® D-1541 8-core (16-thread) 2.1 GHz, Turbo Boost up to 2.7 GHz |
Hardware encryption engine | Yes (AES-NI) |
Memory | 16 GB DDR4 ECC UDIMM (expandable up to 64 GB) |
Compatible drive types | • 16 x 3.5" or 2.5" SATA HDD/SSD (drives not included) |
• It is strongly recommended that you only install drives listed on your device's compatibility list4. Storage pool and volume creation processes may fail when using unverified drives. Synology is unable to provide technical support for devices using unsupported components. | |
Hot swappable drive | Yes |
External ports | • 2 x USB 3.2 Gen 1 ports |
• 2 x Expansion ports (Infiniband) | |
Form factor | Rackmount 3U |
Size (HxWxD) | 132.3 x 482 x 656.5 mm (with server handles) |
Weight | 17.4 kg |
LAN ports | • 4 x 1GbE RJ-45 |
• 2 x 10GbE RJ-45 | |
Wake on LAN/WAN | Yes |
PCIe 3.0 slots | • 2 x 8-lane x8 slots |
• Supports 10GbE/25GbE network interface cards2 and M.2 NVMe SSD adapter cards for SSD cache9 | |
Scheduled power on/off | Yes |
System fans | 3 x (80 x 80 x 32 mm) |
AC input power voltage | 100 V to 240 V AC |
Power frequency | 50/60 Hz, single phase |
Operating temperature | 0°C to 35°C (32°F to 95°F) |
Storage temperature | -20°C to 60°C (-5°F to 140°F) |
Relative humidity | 5% to 95% RH |
Maximum operating altitude | 5,000 m (16,400 ft) |