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Synology RackStation RS4021XS+ NAS/storage server Rack (3U) Ethernet LAN Black D-1541
Designed for high throughput and data integrity and demanding business applications, Synology RackStation RS4021XS+ UK is a 16-bay, 3 RU storage solution delivering lightning-fast performance with over 234K 4K random read IOPS and 6,258 MB/s sequential read throughput.
Key Synology RS4021XS+ Specs:
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Intel® Xeon® D-1541 8-core 2.1 GHz
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Built-in dual-port 10GbE
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16 GB ECC DDR4 Up to 64 GB
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Support for up to 40 drive bays with RX1217RP/RX1217
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Redundant Power
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Powerful Network Video Recorder
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Support for 3.5" SATA HDD 2.5" SATA SSD
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RAID 0, 1, 5, 6, 10, Basic, F1, and JBOD
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2 x 10GbE RJ45 | 4 x GbE RJ45
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2 x USB 3.2 Gen 1 Type-A Ports
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2 x PCIe 3.0 x8/x8 Slots
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Synology DiskStation Manager OS
Here is an in-depth description of Synology RS4021XS+ Intel Xeon D-1541.
Uninterruptible Service Delivery:
Synology RS4021XS+ has been designed in a way to support uninterrupted service delivery. For instance:
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Redundant power:
It comes with dual PSUs, delivering protection against a PSU failure or accidental cord removal, as it is hot-swappable as well, allowing network administrators to replace fans without shutting down the system.
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Next-generation file system
Synology 3U rackmount NAS is provided with next-gen file system: Btrfs, preventing data corruption and reducing maintenance overheads with advanced storage technologies and optimized snapshots.
Business-Optimized Design:
Synology RS4021XS features two PCIe slots for performance, networking, and storage upgrades, allowing network admins to adapt to any business environment. Furthermore, you can upgrade network bandwidth in minutes by 2x or more with Synology’s range of 10GbE NICs.
Finally, it is provided with 16 drive bays supporting both SATA HDD/SSD 2.5/3.5" drives, which can be expanded to 40 bays using two Synology RX1217RP/RX1217 expansion units, allowing network managers can quickly and easily scale up to 40 drives with two expansion units.
High-Performance Computing:
RS4021XS+ NAS server UK features high-performance compute capabilities. It comes with 4K random read performance of up to 234,698 IOPS and sequential read speeds of 6258 MB/s for demanding workloads. Furthermore, Intel Xeon D-1541 8-core 2.1 GHz (turbo up to ~2.7 GHz) CPU enables this NAS device to deliver strong processing capability for concurrent workloads.
Private Video Surveillance:
In collaboration with Synology Surveillance Station, Synology RS4021XS+ can become a powerful private video recorder with support for:
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Up to 90 IP cameras
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ONVIF support
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Private, subscription-free storage of the recordings
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Email, SMS, or push notification systems
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Event-based rules to trigger specific actions
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Easy access through web browser, dedicated desktop clients, or mobile app
Data Backup Solutions for IT Infrastructure:
RS4021XS+ 10GbE NAS UK offers multiple tools and capabilities, making it a reliable data backup solution for IT infrastructure. For instance:
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Active Backup for Microsoft 365 helps you maintain backup data from Microsoft 365, including OneDrive for Business, SharePoint Online, emails, contacts, and calendar.
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Active Backup for Business (ABB), helps network admins consolidate backup tasks for physical and virtual environments, enabling quick restoration of files, entire physical machines, and VMs.
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Synology Active Backup Suite features a collection of license-free backup solutions, helping users safeguard Windows PCs and servers, VMs, other file servers, and cloud-based storage.
| Length | 65.65 cm |
| Width | 48.20 cm |
| Height | 13.23 cm |
| Weight | 17.40 kgs |













