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header-product Storage server Synology RackStation RS4021XS+
7,431.49 €

Storage server Synology RackStation RS4021XS+

Storage server Synology RackStation RS4021XS+ Photo 1
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Storage server Synology RackStation RS4021XS+

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Short description

The Synology RackStation RS4021XS+ is a 3U rack-mounted storage server designed for small and medium businesses. It features an Intel® Xeon® D-1541 processor with a frequency of 2.1 GHz and 16 GB of DDR4 internal memory, ensuring efficient performance for data management. With its robust design and advanced capabilities, this NAS solution provides reliable storage and easy scalability for growing business needs.
Available for order: 3 pcs.
Warranty: 2 Years
SKU: 4031337
free shipment

Cheapest delivery:

Latvijas Pasts pakomāts

Pick-up points

Latvijas Pasts pakomāts

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
23.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
28.07.2026 {{selectedOffer.courierDeliveryString}}
From 18.74 € (Weight: 24.64 kg)
Parcel couriers
Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Locker LV
28.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
payment
Payment Methods:
Bank transfer, Leasing for legal entities
Leasing for legal entities: from 258.62 euros per month
Together cheaper
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Product information

Description

The Synology RackStation RS4021XS+ is a 3U rack-mounted storage server designed for small and medium businesses that require reliable, scalable centralized storage. Powered by an Intel Xeon D-1541 CPU, 16 GB DDR4 memory, ECC support and built-in 10GbE connectivity, the RS4021XS+ delivers high performance for multi-user environments and data-intensive workloads while providing advanced data protection and continuity features.

Advantages

The RS4021XS+ offers high random and sequential read performance, redundant power supplies and hot-swappable fans for continuous operation, and a next-generation Btrfs file system to reduce maintenance overhead and protect against data corruption. Two PCIe slots allow networking and storage expansion, and support for SSD caching and 10GbE NICs enables performance and bandwidth upgrades. Expansion units let you scale capacity up to 40 drives.

Suitable for

  • Centralized file storage and sharing for small and medium businesses
  • Virtualization storage for VMware, Hyper‑V and OpenStack environments
  • Backup and disaster recovery with Hyper Backup and Snapshot Replication
  • Video surveillance as a Network Video Recorder (up to 90 IP cameras)
  • High-availability clusters requiring minute-level failover

Key specifications

  • Form factor: 3U rackmount chassis
  • Processor: Intel Xeon D-1541
  • Memory: 16 GB DDR4 (ECC capable)
  • Drive bays supported: up to 16 (HDD & SSD)
  • Expandable to 40 drives with two RX1217(RP) units
  • Connectivity: built-in 10GbE, two PCIe slots for NICs/expansion
  • File system: Btrfs
  • Weight: 17.4 kg
  • Colour: Black
  • MPN / EAN: RS4021XS+ / 4711174724086

How to use

Install the RS4021XS+ into a standard 19" rack and connect power and network interfaces. Populate drive bays with supported HDDs or SSDs and configure RAID arrays through Synology DiskStation Manager (DSM). Use the built-in 10GbE or add compatible NICs via PCIe slots to increase network throughput. Enable Btrfs and configure snapshots, Snapshot Replication, and Hyper Backup for data protection. For surveillance, install Surveillance Station, connect IP cameras and configure recording and alert rules.

Usage recommendations

For best results in multi-user or virtualization environments, enable ECC memory, provision SSD cache using Synology NVMe adapter cards or 2.5" SAT5200 SSDs to improve IOPS, and deploy dual power supplies. Schedule regular snapshots and off-site backups with Hyper Backup to minimize recovery time and protect against data loss.

Specifications

RAID support:
Yes
Storage drives installed:
No
Number of storage drives supported:
16
Installed storage drive type:
No
Supported storage drive types:
HDD & SSD
Ethernet LAN:
Yes
Chassis type:
Rack (3U)
Weight:
17.4 kg
Product colour:
Black
All features

Storage

RAID levels:
5, 6
RAID support:
Yes
Storage drive interface:
Serial ATA II, Serial ATA III
Number of storage drives supported:
16
Storage drive sizes supported:
2.5, 3.5
Storage drives installed:
No
Installed storage drive type:
No
Supported storage drive types:
HDD & SSD

Ports & interfaces

Ethernet LAN (RJ-45) ports:
6
PCI Express x8 (Gen 3.x) slots:
2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity:
2
USB port:
Yes

Network

Ethernet LAN:
Yes
Wake-on-LAN ready:
Yes
Ethernet LAN data rate supported (max):
10000

Processor

Processor model:
D-1541
Processor manufacturer:
Intel
Processor cores:
8
Number of processors supported:
1
Processor boost frequency:
2.7 GHz
CPU configuration (max):
1
Processor frequency:
2.1 GHz
Conflict-Free processor:
Yes

Memory

Internal memory type:
DDR4
Memory slots:
4
ECC:
Yes
Memory form factor:
UDIMM
Maximum RAM supported:
64 GB
Internal memory:
16 GB

Power

Power consumption (typical): Power consumption in switched-on state expressed in W.
145.79 W
Redundant power supply (RPS) support:
Yes
AC input frequency:
50 - 60
AC input voltage:
100 - 240
Power supply unit (PSU) capacity:
800 W
Power consumption (HDD standby):
62.68 W

Operational conditions

Operating relative humidity (H-H):
5 - 95
Storage temperature (T-T):
-20 - 60
Operating temperature (T-T):
0 - 35

Design

Chassis type:
Rack (3U)
Product colour:
Black
Built-in speaker(s):
No
Number of fans:
3 fan(s)
Cooling type:
Active
Fan diameter:
80 mm
Built-in display:
No

Performance

Type:
Storage server
Noise level: Not only energy saving helps to protect the environment but also noise level reduction. Noise level reduction up to 3 dB really means noise level reduction in 2 times. For example, a device with noise level 39 dB (А) will be two times quieter than a devise with a noise level 42 dB (А). Energy-saving certificate that shows noise level plays the role of an additional objective indicator basing on which You can successfully choose a product.
44.7 dB
On/off switch:
Yes
Device class:
Small & Medium Business
Backup function:
Yes

Weight & dimensions

Weight:
17.4 kg
Height:
132.3 mm
Width:
482 mm
Depth:
656.5 mm

Other features

Certification:
FCC CE BSMI VCCI RCM EAC CCC KC UL

Processor special features

Enhanced Intel SpeedStep Technology:
Yes
Execute Disable Bit:
Yes
Idle States:
Yes
Intel Trusted Execution Technology:
Yes
Intel Enhanced Halt State:
Yes
Intel VT-x with Extended Page Tables (EPT):
Yes
Embedded options available:
No
Intel TSX-NI:
Yes
Intel 64:
Yes
Intel Virtualization Technology for Directed I/O (VT-d):
Yes
Intel Secure Key Technology version:
1.00
Intel Virtualization Technology (VT-x):
Yes
Intel TSX-NI version:
1.00

Packaging content

Power cables quantity:
2

Logistics data

Harmonized System (HS) code:
84714100

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Customer reviews

Customer questions

FAQ

How much does the Storage server Synology RackStation RS4021XS+ cost, and is it available for purchase?

The price is 7,431.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 23.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Leasing for legal entities. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All SYNOLOGY products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized SYNOLOGY service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: raid support, storage drives installed, number of storage drives supported, installed storage drive type, supported storage drive types, ethernet lan, chassis type, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for Storage server Synology RackStation RS4021XS+?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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