# Storage server Synology RackStation RS4021XS+

**URL:** https://aio.lv/en/product--synology-rs4021xs--4031337
**Data updated:** 2025-12-29 14:00 (EET)
**Category:** NAS Devices & Storage
**Manufacturer:** SYNOLOGY
**Manufacturer code:** RS4021XS+
**EAN:** 4711174724086
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7 431.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 6 141.73 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--synology-rs4021xs--4031337

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 18.74 EUR |

## Summary 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.

## Long 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

### Storage

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| Ethernet LAN | Yes |
| Wake-on-LAN ready | Yes |
| Ethernet LAN data rate supported (max) | 10000 |

### Processor

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| Internal memory type | DDR4 |
| Memory slots | 4 |
| ECC | Yes |
| Memory form factor | UDIMM |
| Maximum RAM supported | 64 GB |
| Internal memory | 16 GB |

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 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

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

### Design

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| Type | Storage server |
| Noise level | 44.7 dB |
| On/off switch | Yes |
| Device class | Small & Medium Business |
| Backup function | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 17.4 kg |
| Height | 132.3 mm |
| Width | 482 mm |
| Depth | 656.5 mm |

### Other features

| Feature | Value |
|---|---|
| Certification | FCC
CE
BSMI
VCCI
RCM
EAC
CCC
KC
UL |

### Processor special features

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| Power cables quantity | 2 |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 84714100 |

## 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. More information about warranty service: https://aio.lv/en/warranty

### 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.

## Image

https://aio.lv/img/cache/product/4031337/64755683_large.webp