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  - Intel Atom C3538 2.1GHz Quad-Core CPU
- 8 GB DDR4-2133 - 128 GB maximum
- Two Gigabit Ethernet and two 2.5-Gigabit Ethernet ports. Can provide up to 
  5 gbps when aggregated.
- Supports Wake-on-LAN and Wake-on-WAN
- Complete iSCSI/IP-SAN and NFS support - Supports VMware, Citrix and 
  Hyper-V - Supports virtual machines and Docker applications
- Supports ACL and AD. Improves business application 
  efficiency.
- PCIe slot for 10-Gigabit Ethernet card
ASUSTOR AS6504RS 4 x Total Bays SAN/NAS Storage System - 8 GB Flash Memory Capacity - Intel Atom C3538 Quad-core (4 Core) 2.10 GHz - 8 GB RAM - DDR4 SDRAM - 1U Rack-mountable - 72 TB Supported HDD Capacity - 0 x HDD Installed - Serial ATA/600 Controller - RAID Supported - 0, 1, 5, 6, 10, JBOD RAID Levels - 4 x RJ-45 - Gigabit Ethernet, 2.5 Gigabit Ethernet - ADM 3.5
Cost-effective 2.5GbE 1U Rackmount Server
A thin 1U rack 2.5GbE server providing stable performance and four bays for expandable and easy SATA storage. The Lockerstor 4RS and 4RD bring expandability by bringing PCI Express capabilities, creating one of the most flexible and lightweight solutions for small businesses.
Enterprise Grade Quad-Core Intel Atom CPU and DDR4 RAM
Equipped with the new Quad-Core Intel Atom C3538 that is clocked at 2.1GHz and combined with more than 8GB of DDR4 RAM makes for an ultra-fast, ultra-smooth file sharing experience for your office.
Enterprise Backup
The Lockerstor RD has complete backup and safety mechanisms by including dual backup power supplies for safety while including four Ethernet ports for additional performance and redundancy. Two Gigabit and two 2.5-Gigabit Ethernet ports adorn the rear of the NAS, ensuring that everyone can access their files quickly and efficiently. The Lockerstor RD makes no sacrifices by ensuring zero downtime if a port or power supply is offline.
"Find Me" Function and Service Light for Server Rooms
In enterprise environments, storage devices are commonly placed together in a server room. In order to allow administrators to quickly find the NAS from among many servers the Lockerstor 4RS/RD(1U) provides a dedicated button on front panel. When this button is pressed, the LED service light on the rear panel of the NAS will light up. ASUSTOR also offers the mobile NAS management app, AiMaster which provides the exclusive Find Me function. When Find Me is activated, the system status light on the front of the NAS will flash and the system buzzer will sound, helping users to quickly find the NAS.
Agile Expandability
The ASUSTOR Lockerstor 4RD rackmount series prepares you for the needs of tomorrow. PCIe expansion enables 10-Gigabit Ethernet can be installed to increase performance and expandability. Combine the Ethernet ports and connect to a 2.5-Gigabit Ethernet switch to take advantage of extreme speeds. Break free from restrictions with the Lockerstor 4RD.
Efficient, Redundant and Powerful
The Lockerstor 4RD contains four Ethernet ports. Two are Gigabit and two are 2.5-Gigabit Ethernet. Combine the two 2.5-Gigabit Ethernet ports to increase performance and redundancy. Link aggregation increases performance to up to 5 gbps while also ensuring zero downtime in the event of one port going offline.
Expand your storage space
A professional grade NAS needs to be equipped with a diverse array of expansion functionality. In addition to the 4 drive bays, we have also included 4 USB 3.2 ports, allowing you to create a tailored storage space for both your work and entertainment needs. 
Specifications
  
  
    | CPU | CPU 
      Model | Intel 
      ATOM C3538 | 
  
    |  | CPU 
      Architecture | x64 
      64-bit | 
  
    |  | CPU 
      Frequency | Quad-Core 
      2.1GHz | 
  
    | Memory | Memory | 8GB 
      SO-DIMM DDR4 Compatibility | 
  
    |  | Memory 
      Module Pre-installed | 8GB 
      (1 x 8GB) | 
  
    |  | Total 
      Memory Slots | 4 | 
  
    |  | Memory 
      Expandable up to | 128GB 
      (4x 32GB) Installation Guide | 
  
    | Support 
      mixed capacity | 
  
    |  | Flash 
      Memory | 8GB 
      eMMC | 
  
    | Storage | Drive 
      Bays | 4 | 
  
    |  | Compatible 
      Drive Type Compatibility | 3.5" 
      SATA HDD | 
  
    | 2.5" 
      SATA HDD | 
  
    | 2.5" 
      SATA SSD | 
  
    |  | Maximum 
      Drive Bays with Expansion Unit | 20 | 
  
    | External 
      Ports | Expansion | USB 
      3.2 Gen 1 x 4 | 
  
    |  | Network | Gigabit 
      Ethernet (1G/100M) x 2; 2.5 Gigabit Ethernet (2.5G/1G/100M) x 
      2 | 
  
    |  | PCIe 
      Expansion Slots | PCIe 
      3.0 x8 slot (black, x4 link) | 
  
    |  | HDMI 
      Output | N/A | 
  
    | Others | System 
      Fan | 40mm 
      x 2 | 
  
    |  | LCD 
      Panel | Yes | 
  
    |  | Power 
      Supply Unit / Adapter | AS6504RS 
      x1 / AS6504RD x2 | 
  
    |  | Input 
      Power Voltage | 100V 
      to 240V AC | 
  
    |  | Redundant 
      power supply | Yes | 
  
    |  | Service 
      LED Indicator | Yes | 
  
    |  | Certification | FCC, 
      CE, VCCI, BSMI, C-TICK, KCC, BIS | 
  
    |  | Warranty | 3 
      Years | 
  
    | Operation | Power 
      Consumption | AS6504RS: 
      47.7W (Operation) 28.4W (Disk Hibernation); | 
  
    |  | Noise 
      Level | - | 
  
    |  | Operation 
      Temperature | 0C~40C 
      (32F~104F) | 
  
    |  | Humidity | 5% 
      to 95% RH | 
  
    | Size 
      and Weight | Size | 44(H) 
      x 439(W) x 515(D) mm |