# NAS Asustor Lockerstor 4RS Rack 1U – Intel Atom C3538, 8GB DDR4, 4 bays, 4×GbE, 250W PSU

**URL:** https://aio.lv/en/product--asustor-as6504rs--11597915
**Data updated:** 2026-01-21 12:11 (EET)
**Category:** NAS Devices & Storage
**Manufacturer:** asustor
**Manufacturer code:** AS6504RS
**EAN:** 4710474831388
**Warranty:** 3 Years
**Availability:** Out of stock

## Summary description

Rack-mount NAS Asustor Lockerstor 4RS with Intel Atom C3538 (4 cores, 2.1 GHz) and 8 GB DDR4 (SO‑DIMM). Supports up to 128 GB RAM, four hot-swap 2.5/3.5" SATA drives (max 72 TB), hardware features include 4×1GbE, link aggregation, iSCSI, BTRFS, RAID, snapshots and ADM OS. Built-in 250 W PSU, active cooling with two fans, multiple USB 3.2 ports and PCIe x8 slot for expansion — designed for SMB storage, backup and virtualization tasks.

## Long description

The Asustor Lockerstor 4RS is a 1U rack-mounted NAS designed for small and medium businesses. Equipped with an Intel Atom C3538 2.1 GHz processor and 8 GB DDR4 memory, this black rack NAS supports up to four SATA III HDD or SSD drives and provides RAID support, Ethernet LAN connectivity and active cooling in a compact 1U chassis.
Advantages
The Lockerstor 4RS delivers a balance of performance and space efficiency for rack environments, offering RAID support for data protection, iSCSI compatibility for virtualization and backup flexibility including cloud and iSCSI LUN options. Its Intel Atom C3538 CPU and DDR4 memory provide stable multitasking for business applications while the 1U form factor saves rack space.
Suitable for
Small and medium business file storage
Virtualization and iSCSI targets
Centralized backups and cloud backup integration
Rack-mounted network storage in server rooms
Key specifications
Model: Asustor Lockerstor 4RS (AS6504RS)
Form factor: Rack (1U), colour: Black
Processor: Intel Atom C3538, 2.1 GHz
Memory: 8 GB DDR4 (supports SO-DIMM slots as specified)
Drive bays supported: 4 × SATA III (HDD/SSD)
RAID support: Yes
Network: Ethernet LAN with Jumbo Frames, iSCSI support, Wake-on-LAN ready
Cooling: Active
Power/backup: backup features include cloud and iSCSI LUN support; power rating listed as 250 W in source
Weight: 7.85 kg
EAN: 4710474831388
How to use
Install the Lockerstor 4RS into a 1U rack slot, mount compatible 2.5" or 3.5" SATA III HDDs or SSDs into the drive bays, and connect to the network via Ethernet. Configure RAID and storage pools through the Asustor ADM interface, enable iSCSI targets or cloud backup features as required, and adjust network settings such as jumbo frames or Wake-on-LAN in the system settings. Ensure active cooling and rack airflow are adequate for continuous operation.
Usage recommendations
For reliable operation in business environments, use enterprise-grade SATA drives when possible, configure RAID for redundancy, keep firmware and ADM software up to date, and maintain proper rack ventilation to support the active cooling system.

## Specifications

### Storage

| Feature | Value |
|---|---|
| RAID levels | 1, 5, 6, 10, JBOD |
| Supported file systems | BTRFS, FAT32, HFS+, NTFS, exFAT, ext3, ext4 |
| RAID support | Yes |
| Number of storage drives supported | 4 |
| Storage drive sizes supported | 2.5, 3.5 |
| Storage drives installed | No |
| Maximum supported storage capacity | 72 TB |
| Installed storage drive type | No |
| Supported storage drive types | HDD & SSD |
| Hot-swap drive bays | Yes |
| Storage drive capacity | 0 GB |
| Supported storage drive interfaces | Serial ATA III |
| Online RAID migration | Yes |
| Bad block scan | Yes |
| Total installed storage capacity | 0 TB |

### Ports & interfaces

| Feature | Value |
|---|---|
| Ethernet LAN (RJ-45) ports | 4 |
| PCI Express x8 (Gen 3.x) slots | 1 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| USB port | Yes |

### Network

| Feature | Value |
|---|---|
| Supported network protocols | CIFS / SMB, SMB 2.0 / 3.0, AFP, NFS, FTP, TFTP, WebDAV, Rsync, SSH, SFTP, iSCSI/IP-SAN, HTTP, HTTPS, Proxy, SNMP, Syslog |
| Ethernet LAN | Yes |
| Wake-on-LAN ready | Yes |
| Link aggregation | Yes |
| Jumbo frames support | Yes |
| Ethernet LAN data rates | 100, 1000, 2500 |
| iSCSI support | Yes |
| Load balancing system | Yes |
| Dynamic DNS (DDNS) | Yes |

### Processor

| Feature | Value |
|---|---|
| Processor model | C3538 |
| Processor manufacturer | Intel |
| Processor cores | 4 |
| CPU configuration (max) | 1 |
| Processor frequency | 2.1 GHz |
| Conflict-Free processor | Yes |

### Memory

| Feature | Value |
|---|---|
| Internal memory type | DDR4 |
| Flash memory | 8000 MB |
| Memory slots | 4 |
| Memory form factor | SO-DIMM |
| Maximum RAM supported | 128 GB |
| Internal memory | 8 GB |

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 47.7 W |
| Number of power supply units | 1 |
| Redundant power supply (RPS) support | Yes |
| AC input voltage | 100-240 |
| Power supply location | Built-in |
| Power supply unit (PSU) capacity | 250 W |
| Power consumption (HDD standby) | 28.4 W |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 5 - 90 |
| Operating temperature (T-T) | 0 - 40 |

### Design

| Feature | Value |
|---|---|
| Chassis type | Rack (1U) |
| LED indicators | Y |
| Product colour | Black |
| Number of fans | 2 fan(s) |
| Cooling type | Active |
| Fan diameter | 40 mm |

### Performance

| Feature | Value |
|---|---|
| Type | NAS |
| Security algorithms | 256-bit AES, HTTPS, SNMP, SNMPv2, SNMPv3, SSL/TLS, WPA-Enterprise, WPA2-Enterprise |
| Browser supported | Firefox, Chrome, Safari, Microsoft Edge |
| Snapshot | Yes |
| Web-based management | Yes |
| Access Control List (ACL) | Yes |
| Multilingual support | Yes |
| S.M.A.R.T. support | Yes |
| Device class | Small & Medium Business |
| Backup function | Yes |
| Backup features | Cloud, iSCSI LUN |
| Built-in UPnP AV media server | Yes |
| System log | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 7.85 kg |
| Height | 44 mm |
| Width | 439 mm |
| Depth | 515 mm |

### Software

| Feature | Value |
|---|---|
| Operating system installed | ADM |
| Windows operating systems supported | Y |
| Linux operating systems supported | Y |
| Server operating systems supported | Windows Server 2003, Windows Server 2008, Windows Server 2012, Windows Server 2016, Windows Server 2019 |

### Other features

| Feature | Value |
|---|---|
| Certification | FCC, CE, VCCI, BSMI, C-TICK, KCC, BIS |

### Processor special features

| Feature | Value |
|---|---|
| Execute Disable Bit | Yes |
| Intel VT-x with Extended Page Tables (EPT) | Yes |
| Embedded options available | Yes |
| Intel QuickAssist Technology | Yes |
| Intel Virtualization Technology for Directed I/O (VT-d) | Yes |
| Intel Secure Boot | Yes |
| Intel Secure Key Technology version | 1.00 |
| Intel Secure Boot Technology version | 1.00 |
| Intel Virtualization Technology (VT-x) | Yes |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | AC, LAN (RJ-45) |
| Power cables quantity | 1 |

### Logistics data

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

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. 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 asustor 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 asustor 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: number of storage drives installed, number of storage drives supported, storage drives installed, raid support, 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.

## Image

https://aio.lv/img/cache/product/11597915/66736648_large.webp